close

Вход

Забыли?

вход по аккаунту

?

JP2016082575

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2016082575
Abstract: To provide an acoustic system capable of changing an output device for supplying an
acoustic signal to an output device connected to a network. A detection module of a TA piano
determines whether or not music data MD is necessary according to setting or change of a mode,
and notifies the smartphone 13 of the necessity. The smartphone 13 responds by stopping the
supply of the music data MD or switching the supply destination to another output device
according to the state of the TA piano 21. [Selected figure] Figure 1
Sound system
[0001]
The technology disclosed in the present application relates to a technology for controlling a
device that outputs an audio signal in a network to which music equipment and the like are
connected.
[0002]
Conventionally, in a network constructed in accordance with a predetermined communication
standard (for example, TCP / IP standard), music data (performance event data such as MIDI), an
acoustic signal (audio signal), or control data (MIDI control data) There is a sound system which
transmits sound control data etc. (for example, patent document 1 etc.).
In this audio system, a plurality of nodes, for example, a control device such as a personal
09-05-2019
1
computer and various output devices (such as an electronic piano and a speaker device) are
connected via a network, and music and the like are synchronously reproduced from the plurality
of output devices. .
[0003]
Further, among the above-described output devices, there are devices provided with a sound
board vibration apparatus in which a vibrator is attached to a sound board (for example, Patent
Document 2 and the like). For example, Patent Document 2 discloses an electric piano in which
an exciter vibrates a soundboard according to an acoustic signal to generate a rich sound.
[0004]
JP 2005-64880 JP JP 2013-77002 JP
[0005]
Among the speaker devices, for example, there are a woofer that outputs a bass, a mid range that
outputs a middle sound, a tweeter that outputs a treble, and the like, in addition to a full range
capable of outputting a sound range from bass to treble.
Further, in the above-described soundboard excitation apparatus, the sound quality is dependent
on the frequency characteristics of the acoustic signal supplied to the exciter that excites the
soundboard because the shape of the soundboard and the like differ depending on the type of
musical instrument. For example, depending on the frequency of the acoustic signal supplied to
the vibrator, a desired sound may not be emitted from the soundboard, or an unintended sound
may be emitted.
[0006]
Moreover, in an output device provided with a sound board vibration apparatus, in addition to a
mode in which a sound board is vibrated to emit sound, it can be used as a normal musical
instrument, that is, the vibrator of the sound board vibration apparatus is operated. It is common
to have a mode in which the electronic sound of the piano and the sound by the string are
09-05-2019
2
emitted according to the performance of the player without being allowed to. This type of output
device does not require the supply of acoustic signals in a mode in which the soundboard
excitation device is not operated. For this reason, there is a demand for an audio system in which
the output device to be used is more appropriately selected according to the music to be
reproduced and the state of the output device.
[0007]
The technology disclosed in the present application has been proposed in view of the above
problems. It is an object of the present invention to provide an audio system capable of changing
an output device for supplying an audio signal to an output device connected to a network.
[0008]
An acoustic system according to the technology disclosed in the present application includes a
supply device connected to a network, which supplies an audio signal to the network, and at least
one sound output according to the acoustic signal supplied from the supply device via the
network. Among the output device, a detection unit that detects whether or not sound can be
output to at least one output device, and an output device that supplies an acoustic signal among
the at least one output device as the detection result of the detection unit And a control device
which controls accordingly. The sound signal referred to here is, for example, an audio signal,
performance data (conversion of performance event data such as MIDI into sound signal), or the
like.
[0009]
In the sound system, the detection unit detects whether the output device can output sound. The
detection unit detects, for example, a mode in which the supplied acoustic signal can not be
output, or a state in which the power of the output device is turned off, and notifies the control
device that the output device is in a state incapable of outputting sound. The control device
controls an output device that supplies an acoustic signal according to the detection result of the
detection unit. Thereby, in the sound system, it becomes possible to stop the supply of the sound
signal to the output device according to the state of the output device.
09-05-2019
3
[0010]
Further, in the acoustic system according to the technology disclosed in the present application,
the control device may be configured to set an output device that supplies an acoustic signal
according to the detection result of the detection unit.
[0011]
In the sound system, for example, the control device can switch the supply destination of the
sound signal supplied to the output device whose state has changed and can not output the
sound to another output device.
[0012]
Further, in the acoustic system according to the technology disclosed in the present application,
the control device may be configured to change the frequency characteristic of the acoustic
signal according to the detection result of the detection unit.
[0013]
In the sound system, the detection unit is, for example, an output device including a vibration
receiving body (a sound board of a piano, a bell of a trumpet, etc.) and a vibrator that vibrates the
vibration receiving body. Detect characteristics etc.
In this case, the control device can appropriately set the frequency characteristic of the acoustic
signal supplied to the output device whose state is detected by the detection unit, based on the
vibration characteristic and the like of the vibration receiving body.
[0014]
Further, in the sound system according to the technology disclosed in the present application, the
control device may notify the user of the detection result of the detection unit and receive the
user's operation instruction according to the notification.
[0015]
In the sound system, for example, by performing an operation on the control device, the user can
change the output device that supplies the sound signal according to the state of the output
device.
09-05-2019
4
[0016]
Further, in the acoustic system according to the technology disclosed in the present application,
the at least one output device includes a vibrator that vibrates in response to the acoustic signal,
and a driven body that outputs sound in response to the vibration of the vibrator. And the
detection unit detects whether or not the output device having the vibration receiving body and
the vibrator can operate the vibrator to output the sound, and notifies the control device of the
detection result. It may be configured to
[0017]
In the sound system, for example, the detection unit operates the vibrator in a mode in which a
musical instrument (output device) having a soundboard (vibration receiving body) and a
vibrator is used as a normal musical instrument, or operates the vibrator to generate sound. To
detect the mode to emit sound.
For example, when the mode used as a normal musical instrument is detected, the detection unit
notifies the control device that the output device can not output the sound (the supply of the
acoustic signal is unnecessary).
Thereby, in the said audio system, it becomes possible to change the output device of a supply
destination according to the state of the output device provided with a vibrator etc. FIG.
[0018]
Further, in the acoustic system according to the technology disclosed in the present application,
at least one output device includes a holding unit provided with a vibrator and holding the
vibration receiving body, and the control device responds to the detection result of the detection
unit. As an acoustic signal to be supplied to the output device from which the vibration receiving
body has been removed in response to detecting that the vibration receiving body has been
removed from the holder of the output device to which the acoustic signal is being supplied. The
vibrator may be configured to supply a vibration signal that vibrates the holding unit.
[0019]
09-05-2019
5
In the acoustic system, when the vibration receiving body is removed from the holding unit, the
control device can generate a sound by supplying a vibration signal and causing the holding unit
to vibrate by the vibrator.
The vibration signal mentioned here may be a signal prepared separately from the acoustic
signal, or may be a signal obtained by changing the frequency characteristic of the acoustic
signal being supplied.
Thereby, in the sound system, for example, when the guitar is removed from the stand provided
with the vibrator, it is possible to generate a sound unrelated to the music being reproduced from
the stand.
By listening to this sound, the user can notice the removal of the guitar while the vibrator is in
operation, and take appropriate measures such as returning the guitar to the stand or stopping
the operation of the vibrator. It is possible to do
Further, since the stand vibrates by the vibrator to generate a sound, it is not necessary to
separately provide a buzzer, a lamp or the like for notifying of an abnormality.
[0020]
According to the technology disclosed in the present application, it is possible to provide an
audio system capable of changing an output device that supplies an audio signal to an output
device connected to a network.
[0021]
It is a block diagram showing composition of a sound system of an embodiment.
It is a block diagram which shows the structure of TA piano. It is a block diagram showing
composition of TA guitar system. It is a flowchart which shows the processing content of
reproduction | regeneration operation of music data. It is a flowchart which shows the processing
content of reproduction | regeneration operation of music data. It is a block diagram which
09-05-2019
6
shows the structure of the sound system of another embodiment. It is a block diagram which
shows the structure of the sound system of another embodiment. It is a block diagram which
shows the structure of the sound system of another embodiment. It is a perspective view of a
stand for trumpet. It is a schematic diagram which shows the internal structure of the stand for
trumpet. It is a perspective view which shows the state in which the trumpet was mounted in the
stand. It is a display screen of a smart phone at the time of detecting a state change. It is a
display screen of the smart phone which changes a sound source.
[0022]
Hereinafter, an embodiment of the present invention will be described with reference to the
attached drawings. FIG. 1 illustrates an acoustic system 10 according to an embodiment of the
present invention. The sound system 10 includes a music data supply device 11, a smartphone
13, a speaker device 17, an automatic playing piano 19, a TA piano 21 and a TA guitar system
23. Each device is a local area network (LAN: Local It is connected via Area Network.
[0023]
The music data supply apparatus 11 is, for example, an external storage device (storage)
connectable to a LAN such as NAS (Network Attached Storage). The song data supply device 11
stores, for example, a song data MD obtained by sampling a song of an analog signal, and a signal
such as control data CD in which a performance event such as MIDI is set. The music data supply
apparatus 11 is not limited to the NAS but, for example, the above-described signal (music data
MD (audio signal) or performance data (conversion of performance event data such as MIDI into
acoustic signals)) into a network It may be another storage device (such as a server) that can be
supplied. Further, the file format of the music data MD is not particularly limited, and may be, for
example, a file format such as MP3, WAVE, WMA, AAC, M4A, or FLAC.
[0024]
In the sound system 10 of the present embodiment, the packet P is transmitted via the LAN
according to a predetermined communication standard, for example, a communication standard
conforming to the TCP / IP standard. The song data supply device 11 converts the song data MD
and the control data CD into packets P and transmits them to each device. The sound system 10
can adopt a communication standard (network protocol) using an isochronous transmission
09-05-2019
7
method in order to realize such packet-type data exchange. The sound system 10 can control
each device for supplying the music data MD stored in the music data supply device 11
according to the contents of the music data MD.
[0025]
The communication standard for transmitting the packet P can be changed as appropriate. For
example, it may be a communication standard for establishing a home network to which a
plurality of electronic devices such as home appliances, portable terminals, personal computers,
etc., such as Digital Living Network Alliance (DLNA) (registered trademark) (registered
trademark) are connected. Also, it may be, for example, a communication standard used for
digital audio networks such as CobraNet (registered trademark). Therefore, as long as the
network included in the audio system 10 can transmit an audio signal (such as music data MD),
various communication modes can be adopted.
[0026]
The smartphone 13 communicates with an access point connected to the LAN, for example, by
wireless communication conforming to IEEE 802.11. The smartphone 13 has, for example, a
plurality of central processing units (CPUs), a memory storing a program executed by each CPU,
a RAM for temporarily storing data when each CPU executes a program, and the like. It has an
internal bus etc. for connecting the devices to each other (each not shown). An application for
controlling the sound system 10 is installed in the smartphone 13. Various functions of the
smartphone 13 are realized by the CPU executing various programs of this application. The
smartphone 13 acquires, for example, the song titles of the song data MD stored in the song data
supply device 11 as various functions, creates a playlist, and displays the playlist on the touch
panel 13A.
[0027]
The speaker device 17 includes a control unit 17A that can be controlled by the application of
the smartphone 13. The control unit 17A receives the packet P of the music data MD from the
music data supply device 11 via the LAN, and converts it into an analog audio signal. The speaker
device 17 amplifies and emits an analog audio signal by an amplifier incorporated therein. The
control unit 17A can be controlled by the smartphone 13 whether or not to acquire the music
09-05-2019
8
data MD from the music data supply device 11. Therefore, the speaker device 17 controls
whether the smartphone 13 controls the control unit 17A to reproduce the music data MD. The
control unit 17A is not limited to the device incorporated in the speaker device 17, but may be a
separately provided detachable device. For example, in addition to the connector to which the
LAN cable is connected, the control unit 17A may include a connector to which an audio cable
connected to the speaker device 17 is connected, and may be a device externally attachable to
the speaker device 17.
[0028]
The automatic performance piano 19 is a device that performs automatic performance by
operating a keyboard or a pedal based on control data CD (performance data etc.) supplied from
the music data supply device 11. In addition to the function to perform automatic performance,
the automatic performance piano 19 receives the music data MD supplied from the music data
supply device 11 by the control unit 19A, amplifies it by the built-in amplifier, and amplifies it to
a speaker unit (not shown). It emits noise from Similar to the speaker device 17, the automatic
playing piano 19 can control whether or not the music data MD is reproduced by the
smartphone 13 controlling the control unit 19 </ b> A.
[0029]
The TA piano 21 is a device that reproduces the music data MD using a transacoustic (registered
trademark) technology. The TA piano 21 is shaped like an ordinary grand piano or upright piano
in appearance, and is disposed at a corresponding location. As shown in FIG. 2, the TA piano 21
detects detection signals of the operation sensor 27 and the operation sensor 27 for detecting
the operation of a performance operation element (key, hammer, pedal, etc.) as in a general
electronic piano. In addition to the electronic sound source 29 that analyzes and generates an
electronic sound signal, in addition to the control unit 21A, the vibrator 31, the sound board 33,
the operation unit 35, and the processing unit 37 are included. FIG. 2 shows a part of the
configuration of the TA piano 21. The control unit 21 </ b> A receives the packet P of the music
data MD from the music data supply device 11 and converts it into a drive signal of the vibrator
31. The processing unit 37 includes a processing circuit such as a CPU, and controls both
whether the control unit 21A converts the music data MD and whether to supply a drive signal to
the vibrator 31. The vibrator 31 is attached to the soundboard 33, vibrates according to the
amplitude and frequency of the supplied drive signal waveform, and vibrates the soundboard 33
to emit sound. The drive signal of the vibrator 31 that is converted and output by the control unit
21A may be the same as the analog audio signal that is converted and output by the control unit
09-05-2019
9
17A of the speaker device 17.
[0030]
The operation unit 35 is a device having an input / output function of the TA piano 21 and has a
display unit, an operation switch, and the like. The processing unit 37 switches the TA piano 21
to three modes, for example, in accordance with the content of the user's operation on the
operation unit 35. The first mode, like a general grand piano, is a normal mode in which the
hammer is operated in response to the player playing the keyboard, and the sound is produced
only by the string struck by the hammer. In the second mode, the stringing by the hammer is
prevented, and based on the electronic sound signal generated by the electronic sound source 29
when the performer plays the music data MD supplied from the music data supply device 11 or
the TA piano 21 itself. This is a TA mode in which the sound board 33 is vibrated by the vibrator
31. In the TA mode, for example, the TA piano 21 can switch whether to supply a drive signal to
the vibrator 31 based on which of the music data MD and the electronic sound signal by the
performance. The third mode is a combined mode in which the sounding board 33 is vibrated by
the vibrator 31 as well as the normal mode.
[0031]
The detection module 39 of the processing unit 37 detects whether or not the TA piano 21
operates the vibrator 31 with the music data MD and can emit sound from the soundboard 33.
The processing by the detection module 39 is realized, for example, by a corresponding program
being executed by the CPU of the processing unit 37 or the like. For example, in the abovedescribed three modes, the vibrator 31 operates in the second mode and the third mode. In other
words, in the first mode, the music piece data MD for operating the vibrator 31 becomes
unnecessary. The detection module 39 determines whether the music piece data MD is necessary
according to the setting or change of the mode, and notifies the smartphone 13 via the LAN. The
smartphone 13 controls the control unit 21A in response to the notification from the detection
module 39, and changes whether the control unit 21A should acquire the music data MD from
the music data supply apparatus 11. For example, when the TA piano 21 is in the first mode, the
smartphone 13 stops the process of acquiring the packet P corresponding to the music data MD
of the control unit 21A.
[0032]
09-05-2019
10
The detection method by the detection module 39 is not limited to the determination by the
mode. For example, when the operation switch of the operation unit 35 is operated and the
power of the TA piano 21 is turned off, the detection module 39 may determine that the music
data MD is unnecessary and notify the smartphone 13 to that effect. . Further, like the TA piano
21, the speaker device 17 and the automatic playing piano 19 may be provided with a detection
module for detecting whether or not the music data MD can be received and reproduced (power
on state, etc.). .
[0033]
In addition, the TA guitar system 23 is a device for reproducing music data MD using Trans
Acoustic (registered trademark) technology, and as shown in FIG. 3, a guitar 43 in the form of an
acoustic guitar in appearance and shape, It has a stand 41 for installing the guitar 43, and is
installed at a corresponding place. In addition to the control unit 23A, the stand 41 is provided
with a vibrator 45 and a detection sensor 47. The control unit 23A converts the packet P
corresponding to the music data MD received from the music data supply device 11 into a drive
signal supplied to the vibrator 45. The exciter 45 excites the sound board 49 of the guitar 43
placed on the stand 41. The exciter 45 is supplied with a drive signal according to the
progression of the music data MD converted by the control unit 23A, excites the sound board 49,
and emits sound. The drive signal of the vibrator 45 that is converted and output by the control
unit 23A may be the same as the analog audio signal that is converted and output by the control
unit 17A of the speaker device 17.
[0034]
Further, the detection sensor 47 is a sensor that can detect whether the guitar 43 is placed on
the stand 41. The detection sensor 47 includes, for example, a relay switch that operates when
the guitar 43 is placed at a predetermined position on the stand 41, and a processing circuit that
processes a signal of the relay switch. The detection sensor 47 detects whether the guitar 43 is
placed on the stand 41 or detached from the stand 41 (for example, in use by the user), and
notifies the smartphone 13. In response to the notification from the detection sensor 47, the
smartphone 13 controls whether or not the control unit 23A should acquire the music data MD
from the music data supply device 11. The detection sensor 47 may be another sensor (such as
an infrared sensor) capable of detecting the state of the guitar 43.
09-05-2019
11
[0035]
Then, in the sound system 10 of the present embodiment, an output device (such as the speaker
device 17 or the TA piano 21) for supplying the music data MD stored in the music data supply
device 11 according to the above configuration is the content of the music data MD. Switch
according to For example, the sound system 10 realizes the reproduction of the music data MD
using the TA piano 21 or the automatic playing piano 19 in the case of a piano song and using
the TA guitar system 23 in the case of a guitar song. Note that the detection of a piano song, a
guitar song, etc. may be determined from the frequency characteristics by performing time
analysis of the song data MD itself, or may be determined from an identifier attached to the song.
Further, for example, for analysis of frequency characteristics, a method disclosed in Japanese
Patent Laid-Open No. 2011-221157 can be used for extracting and comparing feature points at
predetermined time intervals with respect to an acoustic signal. Specifically, a difference between
component values of a component matrix in which component values for each unit band in unit
time are arranged in the time axis direction and the frequency axis direction, and a phase shift
matrix in which the component matrix is phase shifted in the time axis direction The frequency
characteristics of the music data MD may be analyzed by extracting characteristic values from
the calculated ones.
[0036]
Next, the process of reproducing music data MD by the sound system 10 will be described with
reference to FIG. First, in step S11 shown in FIG. 4 (hereinafter simply referred to as “S”), the
user uses the smartphone to play favorite music from the music stored in the music data supply
device 11 using the sound system 10. Operate 13. When the user selects a song (song data MD)
from the playlist (S11), the application of the smartphone 13 searches whether there is a patch
set in the past for the selected song name (S13). The patch referred to here is a virtual patch for
logically setting an arbitrary connection between a plurality of nodes (speaker device 17 and TA
piano 21 and the like) connected via a LAN. In the sound system 10, the music data MD and the
control data CD are transmitted from the output side node (the music data supply device 11) set
by the patch to the input side node (the speaker device 17 or the like).
[0037]
The smartphone 13 includes, for example, a non-volatile memory (such as a flash memory) as a
storage device for storing the applied patch. The smartphone 13 associates the information
09-05-2019
12
related to the music data MD for which reproduction has ended and the setting of the patch used
when the music data MD is reproduced, and stores the information in the flash memory in S35
described later (see FIG. 5). For this reason, in S13, the smartphone 13 searches for patches set
in the past stored in the flash memory, and determines whether or not there is one
corresponding to the music data MD selected by the user from the playlist (S13). S15). A patch
may be set in advance to the music data MD stored in the music data supply device 11. For
example, a patch in which the automatic playing piano 19 or the TA piano 21 is selected as the
output device may be set in advance to the music data MD of the piano music. In this case, the
patch determination process by the smartphone 13 can be omitted.
[0038]
Next, when there is a corresponding patch (S15: YES), the smartphone 13 reapplies the past
patch and starts reproduction of the music data MD selected by the user (S23). On the other
hand, if there is no corresponding patch (S15: NO), the smartphone 13 analyzes the selected
music (S19). Although various methods (for example, the method disclosed by above-mentioned
Unexamined-Japanese-Patent No. 2011-221157 etc.) can be considered as the analysis method
of a music, analysis of the frequency characteristic of a music is demonstrated in mind here. In
addition, as the analysis method of another music, the process which reads the information
preset by the user for every music, the process which reads the default value preset to the music,
etc. can be considered. Here, the sound quality of the music equipment using the transacoustic
technology such as the TA piano 21, that is, the sound quality of the sound that the vibrator 31
excites the sound board 33 to produce sound is supplied to the vibrator 31. This depends largely
on the frequency characteristics of the music data MD. This is because the soundboards 33 and
49 differ in shape, material, etc. depending on the type of musical instrument (TA piano 21 or TA
guitar system 23), and the frequency band etc. in which they resonate differ. For this reason, in a
musical instrument using transacoustic technology, in what manner the soundboards 33 and 49
vibrate and what kind of sound is produced even if the supplied music data MD is identical
Depends on the characteristics of the soundboards 33 and 49 against vibration.
[0039]
For example, when music data MD other than a sound source of a piano or a sound source
having a tone similar to that of a piano is supplied to the TA piano 21, vibration corresponding to
the vibration characteristic of the soundboard 33 is applied by the vibrator 31. As a result, the
soundboard 33 may not emit a desired sound. Therefore, the smartphone 13 analyzes the
frequency characteristics of the music data MD selected by the user and selects an output device
09-05-2019
13
(the speaker device 17, the automatic playing piano 19, the TA piano 21 and the TA guitar
system 23) to be reproduced and set as a patch. To do (S21). The smartphone 13 performs, for
example, an inquiry process to an output device on the network in advance before starting the
process of S11 (for example, at the time of activation of an application), and has an optimal
frequency as music data MD supplied to each output device. It is desirable to obtain information
on characteristics.
[0040]
As a result of analyzing the music data MD selected by the user, for example, when the
smartphone 13 detects a frequency characteristic close to the sound source of the piano, the
smartphone 13 performs automatic performance as an output device for supplying the music
data MD from the music data supply device 11. The piano 19 and the TA piano 21 are selected
(S21). The control units 19A and 21A of the selected automatic playing piano 19 and TA piano
21 execute processing for acquiring the music data MD from the music data supply device 11,
and the synchronized music data MD by the automatic playing piano 19 and the TA piano 21. Is
realized (S23).
[0041]
Alternatively, as a result of analysis, for example, when the smartphone 13 detects a frequency
characteristic close to a sound source of a guitar, the smartphone 13 selects the TA guitar system
23 as an output device. In addition, as a result of the analysis, for example, when the smartphone
13 detects a frequency characteristic that does not belong to the sound source of the piano or
the sound source of the guitar, the smartphone 13 selects the speaker device 17 as the output
device. Thus, in the sound system 10 of the present embodiment, it is possible to select the
output device that matches the music data MD, and reproduce the music data MD from the
optimal output device. In addition, after setting the patch in S17 or S21, the smartphone 13 may
display the determined patch on the touch panel 13A to prompt the user to make a final
determination or change. As a result, the user can reproduce the music data MD from the favorite
output device while comparing the content of the music data MD with the determined patch.
[0042]
Next, in S25 shown in FIG. 5, the smartphone 13 can play back the music data MD according to
09-05-2019
14
the notification from the detection module 39 or the detection sensor 47 provided in each output
device (TA piano 21 or the like). It is determined whether or not. If there is no problem in the
state of all the output devices supplying the music data MD (S25: YES), the smartphone 13
determines whether the reproduction of the music data MD is completed (S31). When the
reproduction of the music data MD is not completed (S31: NO), the smartphone 13 repeatedly
executes the processing from S25 at predetermined timings. Therefore, the smartphone 13
monitors the state of each output device during the reproduction of the music data MD.
[0043]
When the smartphone 13 detects an output device in a state in which the music piece data MD
can not be reproduced (S25: NO), the smartphone 13 stops the supply of the music piece data
MD to the output device in a non-reproducible state (S27). For example, when the smartphone 13
detects that the mode of the TA piano 21 has been changed from the second mode to the first
mode by the notification of the detection module 39, the smartphone 13 stops the process of
acquiring the music data MD of the control unit 21A. Further, when the smart phone 13 detects
that the mode of the TA piano 21 has been changed to the second mode again by the notification
of the detection module 39 (S25: NO), the control unit 21A acquires the music data MD. Resume
(S27). Thereby, the TA piano 21 resumes the supply of the music data MD.
[0044]
Alternatively, in step S27, the smartphone 13 may not only stop the supply of the music data
MD, but may also switch the output device of the supply destination to another output device.
For example, when the smartphone 13 detects that the guitar 43 is removed from the stand 41
according to a notification from the detection sensor 47, the smartphone 13 stops the supply of
the music data MD to the TA guitar system 23, and another output device (speaker A process of
starting supply of the music data MD to the device 17 or the like may be performed. Then, the
smartphone 13 carries out such detection processing and the like during reproduction, and when
reproduction of the music data MD is finished (S31: YES), associates the music data MD for which
reproduction has ended with the applied patch and performs flash The setting is stored in a
memory or the like (S35), and the process is ended. The patch may be stored in the flash memory
or the like not only when the reproduction of the music data MD ends, but may be stored each
time the patch is changed (for example, immediately after the process of S27).
[0045]
09-05-2019
15
Incidentally, the music data MD and the control data CD are an example of an acoustic signal.
The song data supply device 11 is an example of a supply device. The speaker device 17, the
automatic playing piano 19, the TA piano 21, and the TA guitar system 23 are examples of an
output device. The smartphone 13 is an example of a control device. The soundboards 33 and 49
are examples of a vibration receiving body. The detection module 39 and the detection sensor 47
are an example of a detection unit.
[0046]
As mentioned above, according to the above-mentioned embodiment, the following effects are
produced. The detection module 39 of the TA piano 21 determines whether the music data MD is
necessary according to the setting or change of the mode, and notifies the smartphone 13 of the
necessity. The detection sensor 47 of the TA guitar system 23 detects whether the guitar 43 is
placed on the stand 41 or detached from the stand 41, and notifies the smartphone 13 of the
situation. Thereby, the smartphone 13 can stop the supply of the music data MD or switch the
supply destination to another output device according to the state of the TA piano 21 or the TA
guitar system 23.
[0047]
The present invention is not limited to the above embodiment, and it goes without saying that
various improvements and changes can be made without departing from the spirit of the present
invention. For example, when the part of the guitar solo or the part of the piano solo is included
in one piece of music data MD, the smartphone 13 may change the output device in accordance
with the timing of each solo.
[0048]
Further, although the above embodiment has described the case where one music piece data MD
stored in the music piece data supply device 11 is supplied to the output device, a plurality of
related files may be simultaneously supplied to the optimum output device. . For example, it is
assumed that the song data supply device 11 stores song data MD of a guitar song and control
data CD which can be played together with the song data MD. In this case, the smartphone 13
09-05-2019
16
supplies the control data CD to the automatic playing piano 19 while supplying the music data
MD of the guitar music to the TA guitar system 23, the reproduction of the guitar music by the
TA guitar system 23, and the automatic playing piano 19 You may perform the ensemble of the
piano performance by.
[0049]
Alternatively, if another piece of music data MD (a part of a piano or a part of a guitar) is
associated with the music piece data MD selected by the user in S11 of the above embodiment,
the smartphone 13 performs the respective music piece data The frequency characteristics may
be analyzed for the MD to determine the supply destination and the simultaneous delivery may
be performed.
[0050]
Moreover, although the music data supply apparatus 11 was demonstrated to the example as a
supply apparatus which supplies an acoustic signal to the network in this application in the said
embodiment, it is not limited to this.
For example, a distribution server on the Internet may be employed as the supply device. FIG. 6
shows the configuration of an acoustic system 10A according to another embodiment. In
addition, about the structure similar to the said embodiment, the same code | symbol is attached
| subjected and the description is abbreviate | omitted suitably. In the sound system 10A, the
music data MD stored in the music data distribution server 51 on the Internet is acquired, and
each output device performs reproduction. The music data distribution server 51 is, for example,
a server published by a vendor or the like who is engaged in a music distribution business, and
can acquire music data MD according to a predetermined communication standard (such as
HTTP protocol). It has become. For example, in the sound system 10A, when the user uses the
smartphone 13 to select a favorite song from the song data MD stored in the song data
distribution server 51, the smartphone 13 selects an output device as a supply destination. Each
of the control units (such as the control unit 17A) of the selected output device performs a
process of acquiring from the music data distribution server 51 the music data MD selected by
the user. Then, the selected output device performs streaming reproduction while synchronizing
the music data MD downloaded by the control unit (such as the control unit 17A).
[0051]
09-05-2019
17
Also in the sound system 10A having such a configuration, it is possible to obtain the same effect
as that of the sound system 10 described above. The audio system 10A supplies the output data
from the music data supply device 11 to each output device after storing the music data MD
downloaded from the music data distribution server 51 in the music data supply device 11 or the
like without streaming reproduction. May be In this case, the smartphone 13 may download the
music data MD from the music data distribution server 51 to the music data supply apparatus
11.
[0052]
Moreover, in the said embodiment, the smart phone 13 may function as a supply apparatus. For
example, the smartphone 13 stores a plurality of music data MD, and the music data MD may be
supplied to each output device according to the user's selection. In this case, the sound system
10 can omit the music data supply device 11. Further, the smartphone 13 does not need to
control each control unit (such as the control unit 17A).
[0053]
In the above embodiment, the automatic playing piano 19 may function as a supply device. For
example, when using a LAN of a home network, the auto-playing piano 19 disposed in the child
room may be the output side, and the TA piano 21 disposed in the living room may be the input
side. In such a configuration, it is possible to transmit an audio signal of the sound played by the
player on the automatic playing piano 19 through the LAN and emit the sound from the sound
board 33 of the TA piano 21.
[0054]
Further, in the above embodiment, a general audio device such as a television and a radio may be
functioned as a supply device. FIG. 7 shows the configuration of an acoustic system 10B
according to another embodiment. In the sound system 10B, the television 61 is connected to the
LAN via the control unit 63. The control unit 63 includes, for example, a LAN connector and a
connector to which an audio cable can be connected, and is an apparatus externally attachable to
the television 61. The control unit 63 encodes, for example, an analog audio signal DT output
from the television 61 in real time, converts it into a digital audio signal, and supplies it as a
09-05-2019
18
packet P to each output device. The output device of the supply destination converts the received
packet P and reproduces the audio signal DT. In this case, the smartphone 13 may determine, for
example, the type of music (piano song or guitar song) that can be spread in a program from
information of a program guide of digital television broadcast, and determine an output device of
a supply destination.
[0055]
In addition to the sound of the television 61, the audio system 10B may include an image as the
audio signal DT. As shown in FIG. 7, in addition to the television 61, a television 65 is connected
to the LAN via the control unit 67 in addition to the television 61. The television 65 is installed in
a room or the like separate from the television 61. The control unit 67 extracts audio and video
from the packet P received from the control unit 63 and supplies the extracted audio and video
to the television 65. In such a configuration, when a television program of a classical concert is
received by the television 61, for example, the audio system 10B causes the sound to be
synchronously reproduced by the TA piano 21 or the TA guitar system 23 while displaying the
image on the television 65. It becomes possible for the user to provide realistic video and audio.
[0056]
Further, in the above embodiment, the smartphone 13 executes the state detection of the output
device by the detection module 39 and the detection sensor 47 after the reproduction of the
music data MD is started, but this state detection is performed before the reproduction and the
output destination May be implemented. Alternatively, the smartphone 13 may perform
detection and patch change by the detection module 39 or the like both before and during
reproduction.
[0057]
Further, in the above embodiment, as a file format of the music data MD, for example, a lossless
compression file format capable of storing multi-channel (such as 5.1 ch) acoustic signals such as
FLAC in one file is adopted. The smartphone 13 may perform control to change the output device
of the supply destination for each channel. In addition, also how to make multi-channels, four
channels output to four speaker devices 17, one channel output to TA guitar system 23, one
channel output to TA piano 21, and control channel 1 output to automatic playing piano 19 It
09-05-2019
19
may be a multi-track file such as seven channels in total. Further, for example, even in the case
where a packet P is divided into channels as in CobraNet (registered trademark) and the music
data MD and the control data CD can be set for each channel, the smartphone 13 can The output
device of the supply destination may be changed for each channel.
[0058]
Moreover, in the said embodiment, although the smart phone 13 was demonstrated as an
example as a control apparatus, a control apparatus may be not only the smart phone 13, but
another portable terminal or a personal computer. Further, in the above-described embodiment,
the TA guitar system 23 is configured to include the vibrator 45 on the stand 41. However, the
present invention is not limited to this. The vibrator 45 may be attached to the guitar 43. In this
case, the sound board 49 may be excited by wirelessly transmitting an audio signal from the
control unit 23A of the stand 41 to the exciter 45 of the guitar 43. Moreover, the processing
procedure (FIG. 4 and FIG. 5) in the said embodiment is an example, and change of an order,
addition of a step, deletion, exchange etc. can be implemented suitably.
[0059]
Further, the musical instrument provided with the excitation object in the present application is
not limited to the musical instrument (piano or guitar) provided with the soundboards 33 and 49,
but may be a wind instrument such as trumpet or clarinet, or a percussion instrument such as a
drum. FIG. 8 shows the configuration of a sound system 10C according to another embodiment.
In the sound system 10C, two of the smartphone 13 and the wind instrument system 71 are
connected to the LAN, and the tune data MD stored in the smartphone 13 is reproduced by the
wind instrument system 71. Therefore, in the sound system 10C, only one wind instrument
system 71 is connected to the network as an output device, and has a one-to-one relationship
with the smartphone 13 functioning as a control device and a supply device.
[0060]
The wind instrument system 71 includes a stand 73 and, for example, a trumpet 75 as a wind
instrument mounted on the stand 73. FIG. 9 shows a perspective view of the stand 73. FIG. The
stand 73 has a structure in which three legs 82 are provided on the bottom of the peg portion
81. The peg portion 81 has a substantially conical shape which reduces in diameter toward the
09-05-2019
20
upper end 81B from the lower end 81A on the leg 82 side in accordance with the shape of the
bell 75A of the trumpet 75 (see FIG. 11) to be placed. At the lower end portion 81A of the peg
portion 81, an external input terminal 83 connected to the LAN (see FIG. 1) via the LAN cable 77
is provided.
[0061]
Further, the peg portion 81 is provided with a plurality of detection portions 85A, 85B, 85C. The
detection units 85 </ b> A to 85 </ b> C are sensors for detecting that a wind instrument such as
the trumpet 75 is mounted on the peg unit 81. The detectors 85A to 85C are, for example, relay
switches whose on / off is switched by mounting a wind instrument on the peg portion 81. In the
detection units 85A to 85C, for example, when no wind instrument is mounted on the peg unit
81, all the detection units 85A to 85C are in the OFF state.
[0062]
The peg portion 81 is provided with each of the detection units 85A to 85C at different positions
in the vertical direction, and in the configuration shown in FIG. 9, the order of the detection unit
85A, the detection unit 85B, and the detection unit 85C goes from top to bottom. Is attached to
Although the details will be described later, the plurality of detection units 85A to 85C output
different detection signals when the trumpet 75 or another wind instrument having a different
bell inner diameter (such as a clarinet) is placed on the peg unit 81.
[0063]
FIG. 10 shows an internal structural view of the peg portion 81. As shown in FIG. In the peg
portion 81, an amplifier 87 and a vibrator 89 are attached. The amplifier 87 is attached in the
lower part of the peg portion 81, amplifies the music data MD supplied from the smartphone 13
and outputs the amplified data to the vibrator 89. The vibrator 89 is mounted in the upper
portion of the peg portion 81, the outer peripheral surface is in contact with the casing of the
peg portion 81, and the peg portion 81 can be vibrated by its vibration.
[0064]
09-05-2019
21
FIG. 11 shows a state in which the trumpet 75 is placed on the stand 73. When the trumpet 75 is
placed on the peg portion 81, when the bells 75A abut on the detection units 85A to 85C, all the
detection units 85A to 85C are switched from the off state to the on state. The amplifier 87
notifies the smartphone 13 of information related to the detection units 85A to 85C in the on
state based on the detection signals input from the detection units 85A to 85C. The smartphone
13 supplies the wind instrument system 71 with music data MD in accordance with the
notification from the amplifier 87. The amplifier 87 of the wind instrument system 71 vibrates
the vibrator 89 according to the music data MD supplied from the smartphone 13 and vibrates
the peg portion 81 and the trumpet 75 to generate sound.
[0065]
When the trumpet 75 is placed on the peg portion 81, a part of the bell 75A abuts on the peg
portion 81, so the vibration of the vibrator 89 is propagated to the entire instrument such as the
bell 75A of the trumpet 75 and the tube. The whole vibrates. Also, this vibration is propagated to
the air in the pipe and resonates in the pipe. As a result, it is possible to emit sound by utilizing
the musical instrument as a vibrating body and a resonating body. Wind instruments have
different resonance frequency characteristics depending on their types. Therefore, the sound
having the characteristic according to the musical instrument placed on the peg portion 81 is
emitted.
[0066]
Furthermore, the smartphone 13 supplies the wind instrument system 71 with music data MD
according to the notification content from the amplifier 87. Specifically, when the trumpet 75 is
placed on the peg portion 81 as described above, all of the detection portions 85A to 85C are
turned on. Therefore, when the smartphone 13 detects that all three detection units 85A to 85C
are in the on state, the smartphone 13 supplies, for example, music data MD according to the
resonance frequency characteristic of the trumpet 75 to the wind instrument system 71.
[0067]
The smartphone 13 also supplies different music data MD in accordance with the on state of the
detection units 85A to 85C. For example, as shown by a broken line in FIG. 10, when a wind
09-05-2019
22
instrument 91 (for example, a clarinet) whose inner diameter is smaller than that of the trumpet
75 is placed on the peg portion 81, the wind instrument 91 has the bell at the bell 75A of the
trumpet 75. Because it is smaller than the trumpet 75, it is placed on the peg portion 81 at a
position above the trumpet 75. Then, in the detection units 85A to 85C, for example, only the
detection unit 85A on the uppermost side in the peg unit 81 among the three detection units
85A to 85C is turned on. In this case, when the smartphone 13 detects that only the detection
unit 85A is turned on based on the notification from the wind instrument system 71, for
example, the wind instrument system 71 receives music data MD according to the resonance
frequency characteristic of the clarinet. Supply. In addition, the smartphone 13 may change the
frequency characteristic of the music data MD being supplied according to the resonance
frequency characteristic of the wind instrument without changing the type of the music data MD.
As a result, the smartphone 13 can supply music data MD according to the resonance frequency
characteristic of the wind instrument placed on the wind instrument system 71, and can
preferably resonate the wind instrument to generate sound.
[0068]
The detection units 85A to 85C are not limited to the relay switches, and any other detection
mechanism may be used as long as it can detect that the trumpet 75 or the like has been placed.
For example, a photoelectric sensor or a load sensor may be used. Moreover, in the abovementioned example, although the characteristics (the size of bell 75A, an internal diameter, etc.)
of the musical instrument were detected using the relay switch, the detection method is not
limited to this. For example, a vibration pickup is provided in the peg portion 81, and it is
detected how the wind instrument vibrates with respect to the vibration applied from the
vibrator 89, and the resonance of the wind instrument mounted on the peg portion 81 is
detected. Frequency characteristics may be determined. In addition, while attaching the speaker
and the microphone to the peg section 81 and changing the frequency characteristic of the
sound generated from the speaker, the resonance of the sound collected by the microphone is
detected to detect the resonance frequency characteristic of the wind instrument etc. It is also
good. Moreover, the apparatus which provides detection part 85A-85C is not only the stand 73
of a wind instrument, but the apparatus holding other types of musical instruments, for example,
the stand 41 (refer FIG. 3) for the guitars 43 in the said embodiment. A relay switch, a
photoelectric sensor, a load sensor or the like may be provided to be able to detect the presence
or absence of the placement, the type of the stringed instrument (guitar, base, etc.) and the like.
[0069]
09-05-2019
23
In addition, the smartphone 13 changes the music data MD or changes the frequency
characteristics of the music data MD in response to detection that the trumpet 75 is removed
from the peg 81, and excites the peg 81 as a vibrator. It may be vibrated by 89 to generate a
sound. For example, when the user removes the trumpet 75 during the reproduction of music,
the vibration operation by the vibration exciter 89 is continued even though the trumpet 75 is
not placed, which is unnecessary. There is a possibility that power consumption may occur. On
the other hand, when the trumpet 75 is removed, the peg portion 81 may vibrate only according
to the resonance frequency characteristic of the trumpet 75, and no sound may be generated.
Then, the user may not notice that the amplifier 87 and the vibrator 89 are operating.
[0070]
Therefore, for example, when the smartphone 13 detects that the trumpet 75 is removed from
the peg portion 81 and all the detection portions 85A to 85C are turned off during the
reproduction of the music data MD, the peg portion relative to the wind instrument system 71 is
detected. The music data MD of the frequency characteristic at which 81 resonates is supplied.
The peg portion 81 shown in FIG. 10 has a hollow conical shape. For example, when the
amplitude of the vibration of the built-in vibrator 89 is increased or the period is shortened, each
portion of the stand 73 is vibrated. Makes a collision, etc. and a sound is generated. For this
reason, the smartphone 13 changes the music data MD in response to the trumpet 75 being
removed, and the peg portion 81 generates abnormal noise unrelated to the music, so that the
trumpet 75 operates during the operation of the wind instrument system 71. It is possible to
notify the user that he has removed the. It is possible that the user can take appropriate
measures such as returning the trumpet 75 to the peg section 81 or stopping the supply of the
music data MD to the wind instrument system 71 by operating the smartphone 13 by noticing
the abnormal noise. Become.
[0071]
Further, in the above-described embodiment, when the smartphone 13 detects an output device
(such as the TA piano 21) in a state in which the music piece data MD can not be reproduced
(S25 in FIG. 5: NO), Although the process (S27) for stopping the supply of the music data MD is
automatically performed, the user may be notified of the detection result of the state and the
operation instruction from the user may be received.
[0072]
09-05-2019
24
FIG. 12 illustrates an example of a display screen of the smartphone 13 when a state change is
detected.
For example, as shown in FIG. 12, the smartphone 13 does not automatically change the output
device in S27 of the above-described embodiment, and “TA piano 21 is changed to the first
mode” on the top of the touch panel 13A. The display is performed to notify the user that the
state change of the TA piano 21 is detected. On the touch panel 13A, a play button 95 is
displayed at the center. The play button 95 is a button for continuing the play with the changed
setting by being touched by the user. When the user does not select a sound source, which will
be described later, when the reproduction button 95 is touched, the smartphone 13 continues
reproduction with recommended settings according to the detection result of the detection
module 39 or the like. As the recommended setting, for example, when the TA piano 21 is
changed to the first mode, the smartphone 13 stops the supply of the music data MD to the TA
piano 21 and performs the setting to continue the music reproduction by another output device.
[0073]
Further, a sound source change button 97 for selecting a sound source by the user is displayed
below the touch panel 13A. When the sound source change button 97 is touched by the user, the
smartphone 13 displays the screen shown in FIG. 13 on the touch panel 13A. As shown in FIG.
13, on the touch panel 13A, output device names (supply destinations) of music data MD are
displayed vertically aligned on the left side of the screen, and types of music data MD supplied to
each output device are displayed on the right Sound source is displayed. For example, in the
sound source corresponding to the TA piano 21, the selection button 101 is displayed on the
right side of the display of “stop”. The selection button 101 is a button for changing the sound
source supplied to the TA piano 21 (output device). When the user touches the selection button
101, the smartphone 13 displays the respective sound sources (guitar song, piano song, trumpet
song, clarinet song) according to the song data MD being reproduced by a pull-down menu.
Alternatively, even if the smartphone 13 displays, for example, a screen (fader or the like)
capable of changing or equalizing the volume of music data MD supplied to the TA piano 21
when the selection button 101 is touched, for example, on the touch panel 13A. Good.
[0074]
For example, in the wind instrument system 71 shown in FIGS. 8 to 11, when the clarinet is
placed on the stand 73 instead of the trumpet 75, the smartphone 13 supplies the clarinet song
09-05-2019
25
to the wind instrument system 71 if the above setting is recommended. Take control. On the
other hand, when the user wants to supply trumpet music to the wind instrument system 71, the
sound source of the wind instrument system 71 is selected by selecting the sound source
selection button 101 corresponding to the wind instrument system 71 on the screen shown in
FIG. Can be changed to trumpet songs. After changing the sound source, the user touches the
back button 103 displayed at the lower left of the touch panel 13A of FIG. 13, returns to the
screen shown in FIG. 12, and touches the play button 95 to change the setting. It is possible to
continue playback on In such a configuration, the user can change the supply destination of the
music data MD or change the sound source to be supplied according to the state of the output
device by performing an operation on the smartphone 13.
[0075]
Further, the user can confirm the installation state of the wind instrument by confirming the
display on the touch panel 13A shown in FIG. For example, even though the clarinet is placed on
the stand 73 of the wind instrument system 71, if the trumpet tune is set as the sound source,
the user may not be in the proper installation state of the wind instrument from the display on
the touch panel 13A. It is possible to recognize things (tilted and so on).
[0076]
12 and 13 described above describes the case where the user selects the sound source according
to the change in the state of the output device being reproduced, but the user can select the
sound source before the reproduction is started. May be Specifically, in the above embodiment,
as shown in FIG. 4, the smartphone 13 analyzes the frequency characteristics of the music data
MD selected by the user (S19), and automatically selects an output device to be reproduced
(S21). The present invention is not limited to this, and the screen display of FIGS. 12 and 13
described above may be displayed on the touch panel 13A to allow the user to select a sound
source.
[0077]
Further, in the above embodiment, each control unit (such as the control unit 17A) sets the
presence / absence of supply of the music data MD based on the control of the smartphone 13.
However, the characteristics of the output device corresponding to the control unit 17A or the
like It may have a function of determining the presence or absence of supply according to
09-05-2019
26
[0078]
For example, when the user selects a song, the smartphone 13 supplies the song data MD
selected from the song data supply device 11 to all the output devices (the speaker device 17 and
the TA piano 21) connected to the LAN. Implement control.
Each output device on the network will receive the same data. For example, the control unit 21A
receives, of the received music data MD, music data MD having a frequency characteristic
matching the vibration characteristic of the sound board 33 of the TA piano 21. Alternatively, the
control unit 21A may analyze the frequency characteristics of the received music data MD and
extract only the necessary frequency components. The control unit 21A may be configured to
include, for example, a filter or an equalizer for performing processing for extracting,
emphasizing, reducing, and the like only the frequency component matching the vibration
characteristics of the sound board 33. In this configuration, the control unit 17A or the like on
the output device side processes whether or not the packet P of the music data MD supplied on
the LAN is appropriate. As a result, the smartphone 13 does not have to determine which output
device to supply, and only needs to control to broadcast the music data MD to all the output
devices on the LAN. Further, in the sound system 10, the music data supply device 11 broadcasts
the same music data MD to all the output devices by performing an operation on the music data
supply device 11, and the output device side extracts necessary information for the music data
MD. It may be configured to execute processing. In this case, the sound system 10 may not
include the smartphone 13.
[0079]
Further, each control unit 17A or the like determines the presence / absence of supply of the
music data MD to the corresponding output device, for example, analyzes the frequency of the
music data MD included in the packet P, the data set in the packet P It may be determined by
processing (such as information related to an output device to be received). For example, as the
music data MD, a multi-track file may be used in which flag values (identifiers for piano, guitar,
etc.) indicating timbre and frequency characteristics are attached to each track. The setting of the
flag value may be performed in advance by, for example, a vendor who is engaged in a music
distribution business. Alternatively, the smartphone 13 may analyze the frequency characteristics
of each track of the music data MD and set a unique flag value for each track so that the output
device can make a determination. On the output device side, for example, the control unit 21A of
the TA piano 21 receives the packet P of the music data MD supplied on the LAN, and the music
09-05-2019
27
data MD includes a track for which the flag value for the piano is set. If it is set, the drive signal
obtained by converting the data of the track may be supplied to the vibrator 31. That is, each
control unit on the output device side may determine the necessity of the music data MD based
on the flag value corresponding to the frequency characteristic. Even in such a configuration, the
smartphone 13 only needs to broadcast the same multi-track music data MD to all the output
devices on the LAN without determining the supply destination. In this case, the sound system 10
does not require control by the smartphone 13, and can be configured not to include the
smartphone 13.
[0080]
Alternatively, each control unit 17A or the like may control the presence or absence of the supply
of the music data MD to the corresponding output device according to the user's operation
instruction. For example, the TA piano 21 may be configured such that the user can change the
presence / absence of supply by operating the operation unit 35 (see FIG. 2). In this case, the
user operates the operation unit 35 of the TA piano 21 in advance, for example, to reproduce the
music data MD of the packet P received by the TA piano 21 when the music of the piano is
reproduced by the sound system 10 It becomes possible to do setting.
[0081]
DESCRIPTION OF SYMBOLS 10 sound system, 11 music data supply apparatus, 13 smart phone,
17 speaker apparatus, 19 automatic performance piano, 21 TA piano, 23 TA guitar system, 17A,
19A, 21A, 23A control unit.
09-05-2019
28
Документ
Категория
Без категории
Просмотров
0
Размер файла
48 Кб
Теги
jp2016082575
1/--страниц
Пожаловаться на содержимое документа