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JP2004318075

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2004318075
PROBLEM TO BE SOLVED: To provide a music reproduction device capable of easily realizing an
optimum sound field according to use conditions. SOLUTION: A microphone 48 for sound field
setting for inputting sound information outputted from the karaoke apparatus 10 in an
environment where the karaoke apparatus 10 is used, and sound information inputted by the
microphone 48 for sound field setting The frequency characteristic of pink noise output from the
karaoke apparatus 10 calculated by the DSP frequency analyzer 46 which calculates the
frequency characteristic which analyzes the frequency and shows the gain for each of a plurality
of frequency bands and the DSP frequency analyzer 46 is predetermined. Since the DSP 44
automatically changes its output characteristics so as to match the recommended frequency
characteristics, no specialized knowledge of sound is required to set the sound field. [Selected
figure] Figure 4
Music playback device
[0001]
The present invention relates to, for example, a music reproduction apparatus such as a karaoke
apparatus used in a karaoke box, and more particularly to a function of setting a sound field
according to usage conditions.
[0002]
There is known a music reproduction apparatus for outputting a desired musical composition
selectively input from among a plurality of musical compositions stored in advance in a
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predetermined storage device.
For example, the karaoke apparatus used by a karaoke box etc. is that. According to such a
karaoke apparatus, while outputting the music information of the desired music piece selected
from the plurality of music pieces stored in the storage device in advance, the lyrics information
of the music piece is displayed on the screen in synchronization with the output. By displaying, it
is possible to enjoy the karaoke performance of the desired song.
[0003]
By the way, how to hear the sound output from the music reproduction device changes in
accordance with the size, the shape, the material of the wall, etc. of the room in which the music
reproduction device is installed. Therefore, there has been proposed a music reproducing
apparatus having a function of setting an optimal sound field according to the installation place.
For example, the music playback device described in Patent Document 1 is that. According to this
music reproducing apparatus, the microphone for taking in the audio signal, a DSP (Digital Signal
Processor) unit for dividing the audio signal taken in by the microphone into each frequency
band, and the respective frequency bands divided by the DSP unit Since a display unit for
displaying an audio signal as a frequency characteristic is provided, by performing equalizing
processing of the audio signal by manual operation based on the frequency characteristic
displayed on the display unit, a desired according to the installation place Can realize the sound
field of
[0004]
JP 10-55185 A
[0005]
However, as in the above-mentioned prior art, in order to perform equalizing processing of the
audio signal by manual operation based on the visually displayed frequency characteristics, since
specialized knowledge regarding sound is required, For a store clerk or the like of a karaoke box
who performs a sound field setting operation, it has been difficult to realize an optimum sound
field according to the use conditions such as the installation place.
[0006]
The present invention has been made against the background described above, and an object of
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the present invention is to provide a music reproduction apparatus capable of easily realizing an
optimum sound field according to use conditions.
[0007]
In order to achieve such an object, the subject matter of the present invention is a music
reproduction device for outputting a desired music piece selected and input from among a
plurality of music pieces, and the music reproduction device is used. Sound information input
means for inputting sound information output from the music reproduction apparatus in a music
environment, frequency analysis of the sound information inputted by the sound information
input means, and a frequency indicating a gain for each of a plurality of frequency bands
Frequency characteristic calculation means for calculating characteristics, and the music
reproduction so that the frequency characteristic of predetermined sound information outputted
from the music reproduction device calculated by the frequency characteristic calculation means
matches the predetermined recommended frequency characteristic And output characteristic
changing means for changing an output characteristic of the apparatus.
[0008]
In this way, in the environment where the music reproduction device is used, sound information
input means for inputting the sound information output from the music reproduction device, and
the frequency of the sound information inputted by the sound information input means
Frequency characteristic calculating means for analyzing and calculating frequency
characteristics indicating gains for each of a plurality of frequency bands, and frequency
characteristics of predetermined sound information output from the music reproducing device
calculated by the frequency characteristic calculating means are predetermined Since the output
characteristic changing means for changing the output characteristic of the music reproducing
apparatus to match the recommended frequency characteristic is included, no specialized
knowledge about sound is required to set the sound field.
That is, it is possible to provide a music reproduction apparatus capable of easily realizing an
optimal sound field according to the use conditions.
[0009]
Here, preferably, the output characteristic changing means corrects the output characteristic of
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the music reproduction apparatus according to a predetermined time zone.
In this way, there is an advantage that the sound field setting can be performed more finely.
[0010]
Further, preferably, the output characteristic changing means corrects the output characteristic
of the music reproduction device according to the customer group using the music reproduction
device.
In this way, there is an advantage that the sound field setting can be performed more finely.
[0011]
Further, preferably, the output characteristic changing means corrects the output characteristic
of the music reproduction device according to the temperature and the humidity.
In this way, there is an advantage that the sound field setting can be performed more finely.
[0012]
Further, preferably, the output characteristic changing means can change the output
characteristic of the music reproduction device in accordance with a predetermined manual
operation. In this way, after setting the sound field automatically according to the use conditions,
it becomes possible to make settings such as fine adjustment of the output characteristics by
manual operation, and there is an advantage that sound field setting can be performed more
finely. is there.
[0013]
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Preferably, the apparatus further comprises output characteristic storage means for storing the
output characteristic of the music reproducing device changed by the output characteristic
changing means. In this way, it is possible to set and store in advance the output characteristics
according to a plurality of use conditions by the output characteristic changing means, and to
read out as appropriate and apply to the music reproduction apparatus.
[0014]
Preferably, the apparatus further includes output characteristic transmitting / receiving means
for transmitting / receiving an output characteristic of the music reproducing apparatus to /
from a predetermined server or another music reproducing apparatus. According to this
configuration, the output characteristic of the music reproducing device actually set by the
output characteristic changing means is transmitted as a recommended value to the server, or
the music reproducing device as an output characteristic applied to another music reproducing
device. And the output characteristics actually set by the other music player can be received from
the music player or the server.
[0015]
Hereinafter, preferred embodiments of the present invention will be described in detail based on
the drawings.
[0016]
FIG. 1 is a block diagram showing the configuration of a karaoke apparatus 10 which is an
example of a music reproduction apparatus to which the present invention is applied.
As shown in FIG. 1, the karaoke apparatus 10 includes an image display device 12 such as a CRT,
a disk player 14 for background image reproduction, a video mixer 16, an amplifier mixer 18, a
speaker 20, and an audio input device. Input signals from the microphone 22, the operation
panel 24, the CPU 26 as a central processing unit, the ROM 28, the RAM 30, the hard disk 32 as
a storage device, the modem 34, the connection port 35, the CRT controller 36, and the
operation panel 24 Input / output interface 38 for processing, synthesizer 40 for synthesizing
and outputting music information, D / A converter 42, DSP (Digital Signal Processor: Digital
Signal Processor) 44 as sound field setting device, DSP frequency analyzer 46 , The sound field
setting microphone 48, the temperature sensor 50, and the humidity sensor 52 Equipped and are
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configured.
[0017]
The CPU 26 is a so-called microcomputer that processes and controls electronic information
based on a predetermined program stored in the ROM 28. When the user (user of the karaoke
apparatus 10) selects a predetermined karaoke performance, The performance information and
the lyrics information of the karaoke performance song selected from the hard disk 32 to the
RAM 30 are read, the performance information is transmitted from the RAM 30 to the
synthesizer 40 as the performance of the karaoke performance proceeds, the CRT Basic control
such as generation and transmission of lyric character image to the controller 36 based on the
lyric information, transmission of music name character image to the CRT controller 36 at the
time of music selection, reproduction of a predetermined background image by the disc player
14 In addition, the DSP 44, DSP frequency analyzer 46, and To run the sound field setting control
by the sound field set for the microphone 48 or the like.
[0018]
The operation panel 24 is set for each customer in order to select the karaoke performance that
the user wants to sing, adjust the pitch of the performance, adjust the volume balance between
performance and song, and identify the customer. This is an input device provided with operation
buttons (switches) or knobs for inputting the customer ID, and performing various adjustments
such as echo, volume, tone and the like.
The operation panel 24 is provided with an operation knob 25 for setting a sound field, and
sound field setting described later is performed by an operation of rotating or pushing the
operation knob 25. Further, the karaoke apparatus 10 is provided with a remote control 54
which functions as an input device in the same manner as the operation panel 24 in order to
remotely execute a part of the functions of the operation panel 24.
[0019]
The disc player 14 is a background video reproduction device for reproducing a CD or a DVD
storing a background video displayed on the video display device 12 at the time of karaoke
performance. In addition, the video mixer 16 is a lyric character image (lyric telop) generated by
the CPU 26 and outputted from the CRT controller 36 based on the lyric information read from
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the hard disk 32, and from the disk player 14 or the like. It is a video combining device which
combines the background video to be sent and causes the video display device 12 to display the
combined video.
[0020]
The synthesizer 40 is a sound source that generates a music signal such as a performance signal
of an instrument based on the performance information of the musical composition read and sent
from the hard disk 32. The generated music signal is converted into an analog signal and
supplied to the DSP 44, and then supplied to the amplifier mixer 18 with a predetermined output
characteristic. The amplifier mixer 18 mixes the sent music signal with the user's voice input
through the microphone 22 and electrically amplifies the signals. Then, the mixed sound is
output from the speaker 20. The D / A converter 42 converts, for example, data of a WAV format
file into an analog signal and supplies its output to the DSP 44 at the time of karaoke
performance, while supplying its output directly to the mixer amplifier 18 at the time of sound
field setting described later. Do.
[0021]
FIG. 2 is a block diagram showing the configuration of the DSP 44. As shown in FIG. As shown in
FIG. 2, the DSP 44 includes a parametric equalizer 56, a graphic equalizer 58, an enhancer 60, an
isolator 62, an expander 64, and a compressor 66, and the amplifier mixer 18 is operated
according to a command from the CPU 26. Control the output characteristics of the music signal
output to the The parametric equalizer 56 and the graphic equalizer 58 change the gain, that is,
the sound pressure level, for each of a plurality of frequency bands, for example, 4 to 31 bands.
The enhancer 60 makes the sound in a predetermined frequency band glittering. The isolator 62
divides the sound into a plurality of frequency bands. The expander 64 expands sound in a
predetermined frequency band. The compressor 66 compresses sound in a predetermined
frequency band.
[0022]
The temperature sensor 50 detects the temperature of the environment (place of installation)
where the karaoke apparatus 10 is used. The humidity sensor 52 detects the humidity of the
environment where the karaoke apparatus 10 is used. A signal representing the temperature
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detected by the temperature sensor 50 and a signal representing the humidity detected by the
humidity sensor 52 are supplied to the CPU 26.
[0023]
FIG. 3 is a view for explaining the operation unit of the remote control 54. As shown in FIG. As
shown in this figure, the operation unit of such a remote control 54 is provided with 12 number
buttons 54a including numerals from 0 to 9, a music selection button 54b, left and right up and
down arrow buttons 54c, and a cancel button 54d. ing. In addition, a display unit 54e for
operation assistance and confirmation is provided. The numeral button 54a is a button (switch)
for inputting a music selection number or a customer ID. When the numeral button 54a is
pressed, the numeral is displayed on the display unit 54e and the music selection button 54b is
pushed. Thus, the music selection number and the customer ID are output, and the music
selection number and the customer ID are determined. The left, right, upper, and lower arrow
buttons 54c are buttons for moving the cursor, etc. displayed in the same manner when the
option is displayed on the image display device 12. When the arrow button 54c is operated,
When the cursor movement signal is output and the music selection button 54b is pressed, the
selected item is determined. When the left and right arrow buttons 54c are operated during the
karaoke performance by the karaoke apparatus 10, a pitch change signal for changing the pitch
of the performance sound is output. The arrow button 54c is also used to change the output
characteristic of the karaoke apparatus 10 by modifying a curve indicating the frequency
characteristic displayed on the image display device 12 at the time of setting the sound field by
manual operation described later. Be Note that, as shown in FIG. 1, the configuration
corresponding to these buttons and the display unit is also provided in the operation panel 24,
and the same operation is enabled also by the operation panel 24.
[0024]
The hard disk 32 includes a music database for storing performance information, back chorus
information of WAV format, lyrics information, song name information and the like for each
karaoke performance song identified by a music selection number, measurement data for WAV
format, white noise, Digitally encoded data of pink noise, a recommended frequency
characteristic and a correction frequency characteristic as a reference when setting the output
characteristic of the karaoke apparatus 10, and a characteristic for storing an output
characteristic etc. obtained as a result of setting a sound field A database is provided. That is, the
hard disk 32 functions as an output characteristic storage unit for storing the output
characteristic of the karaoke apparatus 10 changed (set) by the output characteristic changing
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unit. The performance information of the music database is stored, for example, in the MIDI
(Musical Instrument Digital Interface) format, and is supplied to the synthesizer 40 for karaoke
performance.
[0025]
The modem 34 is a device for connecting the CPU 26 to a communication line 67 such as a
public telephone line, a cable for cable broadcasting, or an optical fiber, and the plurality of
karaoke devices 10 provided in stores such as a karaoke box. By being connected to the host
server 68 of the karaoke service provider via the communication line 67, transmission and
reception of information with the host server 68 is enabled. Then, in order to enable the karaoke
apparatus 10 to always play new songs, song information etc. of new songs is downloaded from
the host server 68 via the communication line 67 and stored in the song database of the hard
disk 32. Ru. The connection port 35 is a connector for connecting the karaoke apparatus 10 to
another karaoke apparatus 10 or a local server (house server) 70 provided for each store via a
cable 69 such as a LAN cable. Thus, the karaoke apparatus 10 can transmit and receive
information to and from another karaoke apparatus 10 or the local server 70 by being connected
via the cable 69 as described above.
[0026]
FIG. 4 is a functional block diagram for explaining the main part of the sound field setting
function provided in the karaoke apparatus 10. As shown in FIG. The sound field setting
microphone 48 functions as sound information input means for inputting sound information
output from the speaker 20 of the karaoke apparatus 10 in an environment where the karaoke
apparatus 10 is used. The DSP frequency analyzer 46 analyzes the frequency of the sound
information inputted by the sound field setting microphone 48 according to a well-known
frequency analysis algorithm, and gains (unit digit: dB) for each of a plurality of frequency bands,
ie, sound pressure It functions as frequency characteristic calculation means for calculating a
frequency characteristic indicating a level. The DSP frequency analyzer 46 is controlled by the
CPU 26, and a frequency characteristic indicating the calculated gain for each of a plurality of
frequency bands is supplied to the CPU 26. The output characteristic transmitting / receiving
unit 71 is a control function provided in the CPU 26 and transmits / receives the output
characteristic of the karaoke apparatus 10 to / from the host server 68, the local server 70, or
another karaoke apparatus 10. That is, the output characteristic actually set by the DSP 44 is
transmitted to the host server 68 as a recommended value or a reference value, or is transmitted
to the karaoke apparatus 10 or the local server 70 as an output characteristic to be applied to
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another karaoke apparatus 10. And control such that the output characteristics actually set by
the DSP 44 of another karaoke apparatus 10 are received from the karaoke apparatus 10 or the
local server 70. The output characteristic received by the output characteristic transmitting /
receiving means 71 is stored in the characteristic database of the hard disk 32 as an output
characteristic applicable to the karaoke apparatus 10. In a store such as a karaoke box, there are
a plurality of private rooms with similar environments, such as size and interior, and the karaoke
apparatus 10 is often installed in each room, so setting by the karaoke apparatus 10 installed in
one room It is possible to apply the output characteristic which is set to the karaoke device 10
which is provided in the other room, if doing, it eliminates the complexity which sets the output
characteristic regarding the karaoke device 10 which is provided in each room it can.
[0027]
The DSP 44, which is an output characteristic changing means, has a recommended frequency
characteristic in which the frequency characteristic of the predetermined sound information
output from the karaoke apparatus 10 calculated by the DSP frequency analyzer 46 is
predetermined according to the control of the CPU 26. Change its output characteristics to
match. The predetermined sound information is preferably pink noise (noise in which the
strength of the component included in the unit frequency band is inversely proportional to
frequency) or white noise (in the unit frequency band) stored in advance in the hard disk 32. It is
a noise song whose content is a constant noise regardless of the frequency, etc., and is read out
by inputting a predetermined song selection number in the same manner as a normal
performance song. Output from
[0028]
FIG. 5 is a diagram for explaining the sound field setting by the CPU 26. As shown in FIG. As
shown in FIG. 5, the DSP 44 receives a sound (input) by the sound field setting microphone 48
and a curve 72 indicating the frequency characteristic of the noise tune calculated by the DSP
frequency analyzer 46 is the hard disk 32. The output characteristics of the music signal output
to the amplifier mixer 18 are changed so as to coincide with the curve 74 indicating the
recommended frequency characteristics stored in the characteristic database. Here, it is
preferable that the sound collection by the sound field setting microphone 48 be performed at a
place where the user is at the time of the karaoke performance.
[0029]
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The DSP 44 preferably corrects its output characteristics in accordance with various conditions
including the environment in which the karaoke apparatus 10 is used. This correction is
performed, for example, by changing the above-mentioned recommended frequency
characteristic and executing again the sound field setting shown in FIG. 5 described above, and
preferably corresponds to a plurality of conditions stored in the above-mentioned characteristic
database. The average value of the gain in each frequency band in the correction frequency
characteristic and the recommended frequency characteristic is calculated, and the average value
is used as the recommended frequency characteristic.
[0030]
The DSP 44 preferably corrects its output characteristics according to a predetermined time
zone. 6 shows a curve 76 showing the corrected frequency characteristic corresponding to 11
am to 3 pm, FIG. 7 shows a curve 78 showing the corrected frequency characteristic
corresponding to 3 pm to 8 pm, FIG. 8 shows 8 pm Curves 80 showing correction frequency
characteristics corresponding to from 11 am to 11 am are respectively shown. Considering the
audience using karaoke boxes by time of day, there are many high school students in the
evening, office workers in the night, and university students in the middle of the night to the day.
Therefore, a more suitable sound field can be realized by performing correction in accordance
with each customer group.
[0031]
Further, preferably, the DSP 44 corrects the output characteristic according to the customer
group using the karaoke apparatus 10. FIG. 9 shows a curve 82 showing correction frequency
characteristics corresponding to users of ages t 20 to 20, and FIG. 10 shows a curve 84 showing
correction frequency characteristics corresponding to a user of ages t 30 Reference numeral 11
denotes a curve 86 showing correction frequency characteristics corresponding to users aged 40
and over. In general, the optimum frequency characteristics differ depending on the age, such as
the high tone becomes more deafening as the age increases. Therefore, a more suitable sound
field is realized by performing correction in accordance with the age of the user.
[0032]
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Also, preferably, the DSP 44 corrects its output characteristics according to temperature and
humidity. FIG. 12 shows a curve 88 showing a corrected frequency characteristic corresponding
to a use environment of a temperature of 18 ° C. and a humidity of 50%. The transmission of
sound waves changes with temperature and humidity, so the optimum frequency characteristics
differ with temperature and humidity. Therefore, a more suitable sound field is realized by
performing the correction in accordance with the temperature and humidity.
[0033]
FIG. 13 is a flowchart for explaining sound field setting control by the CPU 26, which is
repeatedly executed in a predetermined cycle. Hereinafter, the sound field setting control of the
karaoke apparatus 10 will be described according to this flowchart.
[0034]
First, in step S1 shown in FIG. 13 (hereinafter, step will be omitted), a predetermined sound field
setting screen is displayed on the video display device 12. FIG. 14 is a view exemplifying a sound
field setting screen displayed on the image display device 12 in S1. “Sound field measurement &
automatic sound field setting” which is automatic setting, “manual sound field by manual
operation” "Setting", setting the environment of the room in which the karaoke apparatus 10 is
installed, "setting of the environment" such as setting the environment such as customer base or
time zone, etc. It is possible to select one by operation.
[0035]
Next, in S2, a microphone preparation screen for explaining preparation of the sound field setting
microphone 48 is displayed. FIG. 15 is a view exemplifying a microphone preparation screen
displayed on the video display device 12 at S2, and a connection guide of the microphone 48 for
sound field setting and a value etc. for matching various volume are displayed. It has become.
Here, when the sound field setting microphone 48 is not properly connected and the transition
operation to the next step is performed, as shown in FIG. 16, the sound field setting microphone
48 is not connected. A notice of effect is displayed on the video display device 12.
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[0036]
Next, in S3, a noise music guide screen (not shown) for guiding the music selection number
corresponding to the noise music is displayed. Next, at S4, it is determined whether or not the
music selection number corresponding to the noise music has been input. While this
determination is negative, the process of S4 is repeated by repeating the determination of S4, but
if the determination of S4 is affirmed, the performance (output) of the noise music is started in
S5. FIG. 17 exemplifies a microphone input level adjustment screen displayed on the video
display device 12 after the performance of the noise music is started, and the input level of the
sound field setting microphone 48 while referring to this screen. Is adjusted to the appropriate
value.
[0037]
Next, at step S6 corresponding to the operation of the frequency characteristic calculating means,
the DSP frequency analyzer 46 uses the DSP frequency analyzer 46 for the frequency
characteristic of the noise collected (inputted) by the sound field setting microphone 48
corresponding to the sound information inputting means. It is calculated. FIG. 18 is a view
exemplifying a frequency characteristic measurement screen displayed on the video display
device 12 at S6. Next, in S7, it is determined whether or not manual (manual) operation setting
with reference to the calculation result in S6. If the determination in S7 is affirmed, in S8, after
the output characteristic of the DSP 44 is manually changed by the rotation and pressing
operation of the operation knob 25, whether or not the output characteristic is stored in S12. If
the determination in S7 is negative, the output of the DSP 44 is such that the frequency
characteristic of the noise sound calculated in S6 described above matches the predetermined
recommended frequency characteristic in S9. After the characteristics are automatically changed,
it is determined in S10 whether or not fine adjustment of the output characteristics by manual
operation is performed. FIG. 19 is a view exemplifying an output characteristic setting screen
displayed on the video display device 12 in S9. When the setting is completed, an output
characteristic setting completion screen as shown in FIG. Is displayed.
[0038]
If the determination in S10 is negative, that is, if it is determined that the manual adjustment of
the output characteristics is not performed, the processing in S12 is performed, but if the
determination in S10 is affirmative, that is, the manual operation is performed. If it is determined
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that the fine adjustment of the output characteristic by the control is performed, the output
characteristic of the DSP 44 automatically set in S9 is finely adjusted in S11 by the rotation and
pressing operation of the operation knob 25. Processing is performed. FIG. 21 exemplifies an
output characteristic manual adjustment screen displayed on the image display device 12 at S11,
and the upper waveform in the screen is a predetermined recommended frequency characteristic
(or correction by environment setting or the like). The lower waveform in the screen shows the
output characteristics of the DSP 44 set in S9. At the stage where the automatic setting in S9 is
performed, the output characteristics of the upper and lower portions coincide. Further, in the
lower waveform, the equalizing setting value is represented by a thick horizontal line, and the
operation knob 25 is rotated to match a predetermined frequency band and pressed to select the
frequency band, and then the operation knob 25 is rotated. Thus, the equalizing set value of the
frequency band can be manually adjusted. Furthermore, in S11, a desired karaoke performance
song can be output by inputting a music selection number, and setting can be performed while
actually listening to the performance.
[0039]
If the determination in S12 is negative, that is, if it is determined that the storage of the output
characteristic is not performed, it is determined in S14 whether transmission / reception of the
output characteristic is performed, but the determination in S12 is positive. If it is determined
that the output characteristic is stored, the DSP 44 set in S8, S9 or S11 in the characteristic
database of the hard disk 32 in S13 corresponding to the output characteristic storage means.
After the output characteristics of are stored, it is determined in S16 whether or not the sound
field setting operation is completed. FIG. 22 is a view exemplifying the output characteristic
storage screen displayed on the video display device 12 at S13, and the output characteristic
after setting can be stored in any one of the storage areas of the memories 1 to 5. ing.
[0040]
If the determination in S14 is negative, that is, if it is determined that transmission / reception of
the output characteristic is not performed, the processing in S16 is performed. If the processing
in S14 is affirmed, that is, transmission / reception of the output characteristic is not performed.
If it is determined that the host server 68, the local server 70, or the other karaoke apparatus 10
is connected via the communication line 67 or the cable 69, etc., in S15 corresponding to the
output characteristic transmitting / receiving means 71. After transmission and reception of the
output characteristics are performed, the process of S16 is performed. If the determination in
S16 is negative, that is, if it is determined that the sound field setting operation has not ended,
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the processing in S6 and subsequent steps is executed again, but if the determination in S16 is
affirmative, that is, the sound field setting operation If it is determined that the process is ended,
this routine is ended. In the above control, S8, S9 and S11 correspond to the operation of the
output characteristic changing means, that is, the DSP 44.
[0041]
Thus, according to the present embodiment, in the environment where the karaoke apparatus 10
which is a music reproduction apparatus is used, sound field setting which is sound information
input means for inputting sound information output from the karaoke apparatus 10 Microphone
48 and a DSP frequency analyzer 46 (S6) which is frequency characteristic calculation means for
calculating the frequency characteristic indicating the gain for each of a plurality of frequency
bands by analyzing the frequency of the sound information inputted by the sound field setting
microphone 48 And the output characteristic change to change the output characteristic so that
the frequency characteristic of the predetermined noise sound output from the karaoke
apparatus 10 calculated by the DSP frequency analyzer 46 matches the predetermined
recommended frequency characteristic Since it includes the DSP 44 (S8, S9, S11) which is a
means, it does not require any expert knowledge on sound in order to set the sound field. That is,
it is possible to provide the karaoke apparatus 10 capable of easily realizing the optimum sound
field according to the use conditions.
[0042]
Also, the DSP 44 may be adapted to various conditions such as an environment in which the
karaoke apparatus 10 is used or a customer class to be used, for example, a predetermined time
zone, a customer class using the karaoke apparatus 10, temperature and humidity, etc. Since the
output characteristics are corrected, there is an advantage that the sound field setting can be
performed more finely.
[0043]
Further, since the DSP 44 can change the output characteristic of the karaoke apparatus 10
according to a predetermined manual operation, the sound characteristic is automatically set
according to the use condition, and then the output characteristic is finely controlled by the
manual operation. There is an advantage that settings such as adjustment can be made, and more
detailed sound field settings can be performed.
[0044]
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Further, since the hard disk 32 (S13), which is an output characteristic storage unit for storing
the output characteristic of the karaoke apparatus 10 changed by the DSP 44, is included, the
DSP 44 sets output characteristics in accordance with a plurality of use conditions in advance. It
has the advantage that it can be stored and read out as appropriate and applied to the karaoke
apparatus 10.
[0045]
Further, since the output characteristic transmitting / receiving unit 71 (S15) for transmitting /
receiving the output characteristic of the DSP 44 to / from the host server 68, the local server
70, or another karaoke apparatus 10 is included, it is actually set by the DSP 44. The output
characteristic of the karaoke apparatus 10 is transmitted to the host server 68 as a
recommended value, or is transmitted to the karaoke apparatus 10 as an output characteristic
applied to another karaoke apparatus 10, or is actually transmitted by the other karaoke
apparatus 10 There is an advantage that the set output characteristic can be received from the
karaoke apparatus 10 or the local server 70.
[0046]
Although the preferred embodiments of the present invention have been described in detail with
reference to the drawings, the present invention is not limited thereto, and may be embodied in
other aspects.
[0047]
For example, in the above embodiment, the sound field setting microphone 48 is provided as the
sound information input means used exclusively for the sound field setting, but the sound field
setting microphone 48 may not necessarily be provided. For example, the microphone 22 for
inputting voice during karaoke performance may be used for setting a sound field.
[0048]
In the above-described embodiment, the karaoke apparatus 10 is connected to the host server 68
of the karaoke service provider via the communication line 67 and connected to the local server
70 for each store via the cable 69 or the like. For example, in a mode in which the local server 70
is connected to the host server 68 of the karaoke service provider and collectively manages the
information distributed to the plurality of karaoke devices 10, each karaoke device is 10 need
not necessarily be directly connected to the host server 68.
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In addition, the local server 70 is not provided for each store, and a predetermined karaoke
apparatus 10 is connected as a host apparatus to the host server 68 of the karaoke service
provider company, and the information distributed to a plurality of karaoke apparatuses 10 is
collectively The aspect to manage is also considered.
In this case, each karaoke apparatus 10 is connected to a predetermined karaoke apparatus 10
as its host apparatus via a cable 69 or the like, but may not necessarily be connected directly to
the host server 68.
[0049]
In the above embodiment, correction of the output characteristics by the DSP 44 is performed by
calculating correction frequency characteristics corresponding to a plurality of conditions stored
in the characteristic database and an average value of gains in each frequency band in the
recommended frequency characteristics. Although the average value is used as the recommended
frequency characteristic, for example, the internal noise correction process is performed without
outputting the noise music and performing the sound collection by the sound field setting
microphone 48 The output characteristics may be changed by being performed.
In this way, the noise noise is not output each time the correction is performed, and there is an
advantage that the sound field correction can be performed between the performances even
when the user is performing the karaoke performance.
[0050]
In the above-described embodiment, the DSP 44 automatically changes its output characteristic
so that the frequency characteristic of the noise sound matches the recommended frequency
characteristic. The curve 72 indicating the frequency characteristic of the noise sound may be
displayed and the curve 74 indicating the recommended frequency characteristic may be
displayed, and the output characteristic may be changed by manual operation.
Also in such a mode, it is possible to easily realize an optimum sound field according to the use
conditions without requiring any specialized knowledge on sound in order to set the sound field.
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[0051]
Further, in the above embodiment, the DSP 44 which is an output characteristic changing means
and the DSP frequency analyzer 46 which is a frequency characteristic calculating means are
provided as separate devices from the CPU 26, but these are controlled by the CPU 26. It may be
a function.
[0052]
In the above-described embodiment, the operation panel 24 is provided with the operation knob
25 for setting the sound field, but this operation knob 25 is used as a volume control knob or the
like during normal karaoke performances. It may be present or not necessarily a dedicated knob.
Moreover, the aspect which uses the said remote control 54 as an operating device for a sound
field setting is also considered.
[0053]
Further, although not particularly mentioned in the above embodiment, the sound field setting
may set a sound field in an indoor usage environment such as a karaoke box or the like, or set a
sound field in an outdoor usage environment. It does not matter.
[0054]
In addition, although not illustrated one by one, the present invention is to be implemented with
various modifications without departing from the scope of the invention.
[0055]
It is a block diagram which shows the structure of the karaoke apparatus which is an example of
the music reproduction apparatus to which this invention was applied.
It is a block diagram which shows the structure of DSP with which the karaoke apparatus of FIG.
1 was equipped.
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18
It is a figure explaining the operation part of the remote control with which the karaoke
apparatus of FIG. 1 was equipped.
It is a functional block diagram explaining the principal part of the sound field setting function
with which the karaoke apparatus of FIG. 1 was equipped.
It is a figure explaining the sound field setting by CPU in the karaoke apparatus of FIG. It is a
curve showing a correction frequency characteristic corresponding to 11 am to 3 pm. It is a
curve which shows the correction frequency characteristic corresponding to 3:00 to 8:00. It is a
curve which shows the correction frequency characteristic corresponding to 8:00 am to 11:00
am. It is a curve which shows the correction frequency characteristic corresponding to the user
of ages 10 to 20. It is a curve which shows the correction frequency characteristic corresponding
to the user of age 30s. It is a curve which shows the correction frequency characteristic
corresponding to the user whose age is 40 or more. It is a curve which shows the correction
frequency characteristic corresponding to the use environment of temperature 18 ° C and
humidity 50%. It is a flowchart explaining the sound field setting control by CPU in the karaoke
apparatus of FIG. It is a figure which illustrates the sound field setting screen displayed on the
image display apparatus of FIG. It is a figure which illustrates the microphone preparation screen
displayed on the image display apparatus of FIG. It is a figure which illustrates the caution screen
to the effect of the microphone for sound field setting displayed on the image display apparatus
of FIG. 1 not being connected. It is a figure which illustrates the mike input level adjustment
screen displayed on the image display apparatus of FIG. It is a figure which illustrates the
frequency characteristic measurement screen displayed on the image display apparatus of FIG. It
is a figure which illustrates the output characteristic setting screen displayed on the video display
apparatus of FIG. It is a figure which illustrates the output characteristic setting completion
screen displayed on the video display apparatus of FIG. It is a figure which illustrates the output
characteristic manual adjustment screen displayed on the image display apparatus of FIG. It is a
figure which illustrates the output characteristic preservation | save screen displayed on the
video display apparatus of FIG.
Explanation of sign
[0056]
10: Karaoke apparatus (music reproduction apparatus) 32: Hard disk (output characteristic
storage means) 44: DSP (output characteristic change means) 46: DSP frequency analyzer
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(frequency characteristic calculation means) 48: microphone for sound field setting (voice
information input Means) 68: Host server 70: Local server 71: Output characteristic transmission
/ reception means
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