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JP2008078938

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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
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DESCRIPTION JP2008078938
In a sound system connecting a plurality of speaker devices, appropriate installation and setting
of the speaker devices can be easily performed. A sound output device to which a plurality of
speaker devices can be connected specifies a listening position, and calculates an arrangement
position of each of the plurality of speaker devices based on the listening position. Then, the
position of the speaker device is measured, and the placement of the speaker device is guided
based on the arrangement position calculated in the calculation step and the measured position
of the speaker device. When it is detected that the speaker device is arranged at the calculated
arrangement position, identification information is notified to the speaker device by infrared
communication or the like, and the correspondence between the arrangement position and the
identification information is held. Then, based on the correspondence between the identification
information and the arrangement position, the sound signal is output to the plurality of
connected speaker devices. [Selected figure] Figure 6
Acoustic output device, control method therefor, and acoustic system
[0001]
The present invention relates to an audio output device and a control method thereof in a multichannel audio system using a plurality of loudspeaker devices, and more particularly to the
installation and setting of a plurality of loudspeaker devices.
[0002]
In recent years, a large number of audio sources in which multi-channel audio signals such as 5.1
channel are recorded, such as DVD, are announced, and a multi-channel audio system for
reproducing such audio sources is spreading in general homes.
10-05-2019
1
[0003]
In this type of sound system, as shown in FIG. 11, a general method is to connect a plurality of
speaker devices 200 to one control device 100 with a cable to control the speakers.
Therefore, a large number of connectors for connecting a plurality of speaker devices 200 with a
cable are arranged on the back of the control device 100, and cables from the respective speaker
devices are concentratedly connected thereto.
For this reason, the back surface of the control device 100 is often complicated. In addition, it
was easy for the connection of the cable to be bothersome and to make the connection incorrect.
[0004]
Furthermore, the cable for the speaker device installed at the rear crosses the room, which not
only impairs the beauty but also has a concern that the cable is hooked. For such problems, an
audio system in which a cable for the rear speaker device is made wireless has already been
commercialized, but often accompanied by deterioration of sound quality such as interruption of
sound.
[0005]
On the other hand, in the multi-channel audio system as described above, for example, it is
recommended to arrange the speaker device as shown in FIG. 12 in accordance with ITU-R
BS.775-1 recommended by ITU. When the arrangement of the speaker device is largely different
from this recommended position, sound image localization may be inadequate, and an ideal
multi-channel sound reproduction effect may not be obtained. Therefore, many methods (sound
field correction) have been proposed in which sound is actually output from each speaker device
to correct the sound field so that sound image localization becomes appropriate even when the
arrangement of the speaker device is not at the recommended position. .
10-05-2019
2
[0006]
The above is the background of the present technology, but it is expected that the abovementioned problems will become even more serious when realizing more channels in the future.
For example, due to the physical limitations of the control device due to the large number of
connectors, the arrangement of the speaker device and the cable connection become
complicated, which takes time for setting, and an unfamiliar user can not make appropriate
settings. There is also sex.
[0007]
Then, the acoustic system which connects a several speaker apparatus and a control apparatus
by a common transmission line is proposed (refer patent document 1, 2 and 3). Since a common
transmission path is used, the cables from the respective speaker devices are not concentrated on
the control device, and cable connection is easy even when the speaker devices are added later.
However, in such a multi-channel audio system, unlike the current multi-channel audio system,
the control device and each speaker device are not connected by independent cables. Therefore,
the control device needs to identify each speaker device in some way and supply an appropriate
acoustic signal to each speaker device.
[0008]
In the sound systems of Patent Documents 1, 2 and 3, after connecting a plurality of speaker
devices and a control device through a common transmission path, identification, number, and
arrangement of speaker devices using microphones equipped in each speaker device Know your
position. And the signal for each speaker apparatus based on the arrangement position is
generated automatically. The outline of this acoustic system will be described in more detail.
[0009]
The system configurations of the sound systems in Patent Documents 1, 2 and 3 are configured
by connecting a server device (corresponding to the control device 100 in FIG. 11) and a
plurality of speaker devices to a common transmission path. And each speaker apparatus is
equipped with a microphone.
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[0010]
After the server device and the plurality of speaker devices are connected by a common
transmission path to configure a network, the server device first performs identification of the
speaker devices and grasping the number of the speaker devices. The server device broadcasts a
signal for that purpose on the network, and assigns a unique identifier (ID) to the speaker device
that responds first to the signal. As a method for the speaker device to respond to the signal, in
addition to a method for returning the response signal to the server device or another speaker
device, a method is proposed in which the speaker device responding first responds to the server
device and emits sound. It is done. The other speaker devices will know the presence of the
speaker device that responded first by picking up the sound with the microphone. After
transmitting a signal by broadcast, the server device repeats the process until the response
disappears even after a predetermined time has elapsed, and performs ID assignment to all the
speaker devices and grasping the number of the speaker devices.
[0011]
Next, in order to automatically detect the arrangement of the speaker device, (1) the distance
between the listener and the speaker device, (2) the distance between the speaker devices, and
(3) the front direction (reference direction) of the listener are measured.
[0012]
(1) In the measurement of the distance between the listener and the speaker device, first, the
server device transmits a measurement start signal by broadcast.
Each speaker device enters a standby state by this measurement start signal. After the respective
speaker devices are put on standby, when the listener speaks, the microphones of the respective
speaker devices pick up and record the listener's voice. The speaker device closest to the listener
detects the voice of the listener earliest, records the voice, and transmits a trigger signal to which
the own ID is added to the other speaker devices. Another speaker device records the sound
collected by the microphone based on the trigger signal and sends it to the server device. The
server device obtains propagation delay time for each speaker device and obtains information on
the distance. The distance determined here is the difference between the distance between the
speaker device closest to the listener and the listener and the distance between the other speaker
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4
devices and the listener.
[0013]
(2) When obtaining the distance between the speaker devices, first, an arbitrary speaker device
broadcasts and emits a trigger signal to which its own ID is added by broadcast. Another speaker
device picks up and records the voice and transmits it to the server device. The ID of the speaker
apparatus of the transmission source is added to the transmission data. As described above, the
server device can calculate the distance between the speaker device which has generated the
trigger signal and the speaker device corresponding to the ID added to the received voice
recording data. The server device grasps the distance between all the speaker devices by
repeating the above operation until all the speaker devices emit sound.
[0014]
(3) The following three methods have been proposed as methods for obtaining the front direction
(reference direction) of the listener. Note that although the arrangement relationship between the
listener and each speaker device can be obtained from (1) and (2), this relationship ignores the
direction in which the listener points. Therefore, it is necessary to obtain the front direction
(reference direction) of the listener.
[0015]
(i) The first method uses a remote control. The remote control has a disk-shaped direction
indication unit, and has a function of transmitting the direction to the server device by pressing
the central portion thereof. With the remote control directed to the front of the listener, the
server device emits a test signal from any speaker device. By directing the direction instructing
unit to the speaker device emitted by the listener and pressing it, direction instruction
information indicating how far the sound is emitted from the front direction of the listener is sent
to the server device. This information determines the front direction (reference direction) of the
listener.
[0016]
(ii) In the second method, test signals are emitted from one or two speaker devices, and the
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above-mentioned remote control is used to adjust the sound image localization to be in the front
direction of the listener.
[0017]
(iii) The third method is to use the voice of the listener used when measuring the distance
between the listener and the speaker device in (1) without using the remote control.
Directional characteristics of human voice are symmetrical, and middle and high range
components are maximum in the front direction of the listener who made a voice, and minimum
in the back direction of the listener. Decide).
[0018]
As mentioned above, it is possible to detect arrangement | positioning of a speaker apparatus by
(1)-(3), and the signal for speaker apparatuses based on the arrangement information can be
produced | generated. In the sound systems of Patent Documents 1, 2 and 3, subsequently,
processing for actually generating and emitting a speaker device signal and correcting the signal
(sound field correction) is also automatically performed. JP, 2005-175744, A JP, 2005-175, 745,
JP, 2005-198249, A
[0019]
The present invention relates to an acoustic system in which a plurality of speaker devices and a
control device are connected by a common transmission path, as in the acoustic systems of
Patent Documents 1, 2 and 3. In the sound systems of Patent Documents 1, 2 and 3,
identification of the speaker devices, grasping of the number, and acquisition of arrangement
information are also automatically performed. However, in the case of performing these, it is
necessary to first install a plurality of speaker devices at any place and connect a common
transmission path. In addition, as described above, it is necessary to emit sound from the speaker
device many times, or to use the voice or hearing of the listener, which is not always practical.
There is also a problem that these settings take too much time.
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[0020]
Furthermore, in the sound systems of Patent Documents 1, 2 and 3, there is no means for
installing the speaker device in the recommended arrangement as shown in FIG. 12, and the
sound system is based on the premise of sound field correction. Therefore, in the worst case,
there is a concern that the correction of the sound field can not be completed, and the
arrangement of the speaker device and the connection of the cable have to be redone from the
beginning. Originally, there are circumstances where it is difficult to realize the recommended
arrangement as shown in Fig. 12 due to limitations of housing conditions etc. However, even
without such limitations, a method for installing each speaker device in the recommended
arrangement is not provided. is the current situation. Although the improvement of sound field
correction technology is remarkable, compared with the case where sound field correction is not
required in an ideal arrangement, the corrected sound can not be said to be faithful to the
original sound.
[0021]
The present invention has been made in view of the above problems, and has an object of
facilitating appropriate installation and setting of a speaker device in an audio system connecting
a plurality of speaker devices.
[0022]
The acoustic output device according to the present invention for achieving the above object has
the following configuration.
That is, an acoustic output device capable of connecting a plurality of speaker devices,
comprising: measuring means for measuring the position of the speaker device; identifying
means for identifying a listening position; and each of the plurality of loudspeaker devices based
on the listening position. A guidance means for guiding the arrangement of the speaker device
based on the calculation means for calculating the arrangement position, the arrangement
position calculated by the calculation means, and the position of the speaker device measured by
the measurement means; When it is detected that the speaker device is arranged at the
arrangement position, identification information is notified to the speaker device by the first
communication means, and holding means for holding the correspondence between the
arrangement position and the identification information, the identification information and the
arrangement Outputting means for outputting an acoustic signal to a plurality of connected
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speaker devices by a second communication means different from the first communication
means based on the correspondence of positions; Prepare.
[0023]
Furthermore, an acoustic output system according to the present invention for achieving the
above object has the following configuration. That is, a sound system in which a plurality of
speaker devices and a control device are connected, a first communication unit for
communicating control signals between the control device and the plurality of speaker devices,
and the plurality of control devices from the control device And a second communication unit
different from the first communication unit for transmitting an audio signal to the speaker
device, wherein the control device detects the position of the transmitter attached to the speaker
device via the first communication unit. Measuring means for measuring the position of the
speaker device by transmitting a signal for the purpose, specifying means for specifying the
listening position, calculating means for calculating the arrangement position of each of the
plurality of speaker devices based on the listening position Guidance means for guiding the
arrangement of the speaker device based on the arrangement position calculated by the
calculation means and the position of the speaker device measured by the measurement means
When it is detected that the speaker device is arranged at the calculated arrangement position,
identification information is notified to the speaker device by the first communication unit, and
the holding unit holds the correspondence between the arrangement position and the
identification information; And output means for outputting an acoustic signal to the plurality of
connected speaker devices by the second communication means based on the correspondence
between the identification information and the arrangement position.
[0024]
Further, a control method of an audio output device according to the present invention for
achieving the above object is a control method of an audio output device capable of connecting a
plurality of speaker devices, which comprises the steps of: measuring a position of the speaker
device; A specifying step of specifying a listening position, a calculating step of calculating an
arrangement position of each of the plurality of speaker devices based on the listening position,
an arrangement position calculated in the calculating step, and a speaker measured in the
measuring step A guidance step of guiding the placement of the speaker device based on the
position of the device; and when it is detected that the speaker device is placed at the calculated
placement position, identification information is sent to the speaker device by the first
communication means. A notification step of holding the correspondence between the
arrangement position and the identification information, and a second communication different
from the first communication means based on the correspondence between the identification
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information and the arrangement position. And an output step of outputting an acoustic signal to
the plurality of connected speaker devices by the communication means.
[0025]
According to the present invention, in an acoustic system in which a plurality of speaker devices
are connected by a common transmission path, initial settings such as the arrangement of the
speaker devices and the wiring of a cable can be easily performed.
Further, according to the present invention, the speaker device can be properly arranged, and
reproduction faithful to the original sound can be performed.
[0026]
Hereinafter, preferred embodiments of the present invention will be described with reference to
the drawings.
[0027]
First Embodiment FIG. 1 is a diagram showing an example of a system configuration of an
acoustic system according to a first embodiment.
The sound system of FIG. 1 is an example of a 5.1 channel multi-channel sound system, and
includes a control device 100, six speaker devices 200, a common transmission path 300, a
display device 400, a display device cable 500, and a position pointer An apparatus 600 is
included. The control device 100 and the six speaker devices 200 are connected by a common
transmission path 300. Also, the control device 100 and the display device 400 are connected by
a display device cable 500. The speaker device 200 collectively refers to six speakers of a center
speaker C, a right front speaker FR, a left front speaker LR, a right surround speaker SR, a left
surround speaker SL, and a subwoofer SW shown in FIG.
[0028]
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9
The audio data transmitted by the control device 100 to the common transmission path 300 is a
packetized digital signal, and audio data of all the speaker devices 200 is included in one packet.
Each packet has a header, and the header includes a packet length, information indicating which
speaker device 200 each voice data is voice data of, and a signal indicating timing of emitting
voice data. The form of the audio data to be transmitted is not limited to the above, and any
format may be used as long as each of the plurality of speaker devices 200 can simultaneously
transmit audio data to be emitted at the same timing.
[0029]
FIG. 2 is a block diagram showing an example of a hardware configuration of the control device
100 in the acoustic system shown in FIG. The control device 100 is configured by connecting
units shown by 102 to 112 to a system bus 101.
[0030]
The ROM (Read Only Memory) 103 stores a control program for executing each operation of the
control device 100, including the initial setting of the sound system. A central processing unit
(CPU) 102 implements various processes to be described later by executing a control program
stored in a ROM 103 using a random access memory (RAM) 104 as a work area. The network I /
F 105 is an interface for communicating with the speaker device 200 through the common
transmission path 300, and is connected to the common transmission path 300 through the
connector 113.
[0031]
The transmission signal generation unit 106 has a function of generating an audio signal and a
control signal to be sent to the speaker device 200 through the transmission path 300 common
to the network I / F 105 under the control of the CPU 102. Also, under the control of the CPU
102, the transmission signal generation unit 106 sends the AV playback device 800 via the AV
playback device I / F 108, the speaker device 200 via the infrared communication I / F 109, and
the display device I / F 111. Also has a function of generating each signal to be sent to the
display device 400.
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[0032]
The reception signal processing unit 107 has a data processing function for receiving data from
the ultrasonic microphone 700 via the ultrasonic microphone I / F 112 and calculating the
position of the speaker device 200. Also, a signal received from the common transmission path
300 via the network I / F 105, a signal received from the speaker device 200 via the infrared
communication I / F 109, and a signal received from the display device 400 via the display
device I / F 111 It also has the function of processing the
[0033]
The speaker device information recording unit 110 records correspondence table data (described
later with reference to FIG. 7) and the like for identifying each speaker device 200 in order for
the control device 100 and the speaker device 200 to communicate via the common
transmission path 300. The speaker device information recording unit 110 may be formed on
the RAM 104. In this case, the correspondence table data is saved in the non-volatile memory
when the power is shut off.
[0034]
The AV player I / F 108 is connected to an AV player 800 for playing the recording medium 900
in which the audio source is recorded. It is also possible that the control device 100 has an AV
reproduction function, and in this case, the AV reproduction device 800 is included in the control
device 100 as one functional block. The infrared communication I / F 109 is an interface for
performing infrared communication with the speaker device 200, and can also serve as a remote
control receiver (not shown). The display device I / F 111 is connected to the display device 400
via the display device cable 500.
[0035]
In addition, an ultrasonic microphone 700 is connected to the ultrasonic microphone I / F 112.
In the first embodiment, four ultrasonic microphones 700 are used. These ultrasonic
microphones 700 are installed at four corners of the display device 400 or at four corners of the
rear wall of the display device 400, and are used to detect the position of the speaker device 200.
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11
The ultrasonic microphone 700 can also be built in the display device 400, but in the first
embodiment, an example in which the ultrasonic microphone 700 is attached to the four corners
of the display device 400 as shown in FIG. 5 will be described. Note that although signals from
three ultrasonic microphones are generally sufficient to detect the position of the ultrasonic
oscillator, in the present embodiment four ultrasonic microphones are used to further increase
the accuracy. Use. For example, in the case of selecting any three ultrasonic microphones from
four ultrasonic microphones, there are four combinations, so the position is detected by these
four combinations and their average value is calculated. Improve the accuracy. The number of
ultrasonic microphones may be any number as long as the accuracy necessary for detecting the
position of the speaker device 200 can be obtained.
[0036]
FIG. 3 is a block diagram showing a hardware configuration of the speaker device 200 in the
acoustic system shown in FIG. The speaker device 200 is configured by connecting each of the
units 202 to 208 to the system bus 201.
[0037]
The ROM 203 stores a control program for executing each operation of the speaker device 200,
including the initial setting of the sound system. The CPU 202 implements various processes by
executing a control program stored in the ROM 203 using the RAM 204 as a work area. The
network I / F 205 is an interface for communicating with the control device 100 through the
common transmission path 300, and is connected to the common transmission path 300 through
the connector 218.
[0038]
The transmission signal generation unit 206 has a function of generating a signal to be sent to
the control device 100 via the transmission path 300 common to the network I / F 205. The
signal generated by the transmission signal generation unit 206 also includes information
(hereinafter, an identifier) for identifying the speaker device 200 which is transmitted from the
control device 100 and stored in the position information transmission unit 210.
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[0039]
The reception signal processing unit 207 receives an audio signal or control signal sent from the
control device 100 via the common transmission path 300 and the network I / F 205, and drives
a speaker or controls the speaker device 200. Generate For example, when one packet includes
identifiers of all speakers and an audio signal, the reception signal processing unit 207 extracts
an audio signal and a control signal corresponding to its own identifier, and outputs the signal
for driving the speakers and the like. A signal for controlling the speaker device 200 is used. A
signal for driving the speaker is sent to the speaker drive unit 208. Further, a signal for
controlling the speaker device 200 is sent to the CPU 202. A signal sent from the reception
signal processing unit 207 to the speaker driving unit 208 is converted into an analog signal by a
D / A converter (not shown) in the speaker driving unit 208, and is supplied to the speaker unit
209. Then, sound is output from the speaker unit 209.
[0040]
The position information transmission unit 210 is configured by connecting a controller 212, an
identifier recording unit 213, an infrared communication I / F 214, and an ultrasonic oscillator
drive unit 215 to the system bus 211. The controller 212 controls the position information
transmission unit 210 and transmits and receives data to and from the CPU 202. The identifier
storage unit 213 stores the identifier received from the control device 100 via the infrared
communication I / F 214. The ultrasonic oscillator drive unit 215 controls the driving of the
ultrasonic oscillator 216 based on the control signal received from the control device 100 via the
infrared communication I / F 214. Further, the position information transmitting unit 210 is
provided with a switch 218 capable of turning on (driving possible) / off (driving impossible) the
driving.
[0041]
The position information transmission unit 210 can be driven by the battery 217, and can be
provided as a separate unit from the speaker device 200. It can also be expected that the
reception sensitivity of the ultrasonic microphone 700 and the communication accuracy of
infrared communication can be improved by setting the position information transmission unit
210 as a separate unit and installing it in an appropriate place.
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[0042]
FIG. 4 is a block diagram showing an example of the hardware configuration of the position
pointer device 600 in the acoustic system shown in FIG. The position pointer device 600 is
configured by connecting a controller 602, an infrared communication I / F 603, and an
ultrasonic oscillator drive unit 604 to a system bus 601.
[0043]
The controller 602 transmits / receives a control signal from the control device 100 via the
infrared communication I / F 603, and controls the driving of the ultrasonic oscillator 605 via
the ultrasonic oscillator drive unit 604 based on this control signal. Further, the position pointer
device 600 is provided with a switch (not shown) that can turn on / off the drive. The position
pointer device 600 can be driven by a battery 606 and can also be used as a remote controller
(not shown) or a microphone for sound field correction (not shown). Further, depending on the
system configuration, when the position information communication unit 210 of the speaker
device 200 is a separate unit, it is also possible to use this as a position pointer device.
[0044]
Next, a method of performing initial setting (arrangement of the speaker device 200 and wiring
of the common transmission path 300) in the acoustic system configured as described above will
be described.
[0045]
FIG. 6 is a flowchart of the main parts of the initial setting by the control device 100 in the
acoustic system of the present embodiment.
Note that settings such as connection between the control device 100 and the display device
400, attachment of the ultrasonic microphone 700 to the four corners of the display device 400,
connection with the control device 100, alignment of the input source of the display device 400
with the control device 100, etc. It has already been completed.
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[0046]
First, when the control device 100 is first powered on, or when the control device 100 is set to
the initial setting mode to reset the sound system, the control device 100 sets the speaker to the
display device 400 in step S1. A screen for inputting the number of devices 200 is displayed. In
this initial setting screen, the user can input the total number of speaker devices 200 using a
remote control (not shown) or the like. In addition, the number of loudspeaker devices such as
subwoofers indicating the number of the total number of loudspeaker devices is also input. For
example, in the case of 5.1 ch, the total number of speaker devices 200 is 6, and the number of
subwoofers is 1, and so on.
[0047]
In step S <b> 2, the control device 100 displays a recommended layout of these speaker devices
on the display device 400 based on the number of speaker devices 200, the number of speaker
devices of a specific type, and the like. For example, if the total number of speaker devices 200 is
six and the number of subwoofers is one, a 5.1ch recommended layout diagram as shown in FIG.
12 is displayed. When the number of speaker devices 200, the number of speaker devices of a
specific type, and the like are the same, and there are a plurality of possible recommended
layouts, they are displayed on the display device 400 to allow the user to select one of them. It is
also possible to configure for.
[0048]
Next, in step S3, the control device 100 measures the distance L between the center speaker C
and the viewing point. First, the control device 100 needs to specify the position of the center
speaker C. In the present embodiment, the ultrasonic microphones 700 are disposed at the four
corners of the display device 400. Therefore, the display device is used to allow the user to input
the distance from the display surface of the display device 400 to the center speaker C using a
remote control or the like. Display guidance by 100. In addition, although the position of the
center speaker C in the display surface direction is at the center of the width of the display
surface, the position of the center speaker C may be set by the user. Of course, the distance from
the display surface of the display device 400 to the center speaker C may be a predetermined
fixed value. When the ultrasonic microphone 700 is arranged on the wall, the positional
relationship between the wall and the center speaker C may be input. For example, if the display
device is disposed parallel to the wall, the distance from the wall to the center speaker C can be
10-05-2019
15
input using a remote control or the like. Then, the user places the position pointer device 600 at
the viewing position (listening point) on the front of the display device 400 (the front of the
designated position of the center speaker C). Then, the battery 606 is attached to the position
pointer device, and the switch 618 for controlling the driving of the ultrasonic wave generator
605 is turned on. At this time, the switch 218 for controlling the drive of each ultrasonic
oscillator is turned off or the battery is not attached. This is because the ultrasonic transmitters
216 of all the speaker devices 200 are not driven.
[0049]
The control device 100 controls the driving of the ultrasonic oscillator 605 built in the position
pointer device 600 by infrared communication. The ultrasonic microphones 700 mounted at the
four corners of the display device 400 receive the ultrasonic waves. The control device 100
detects the position of the position pointer device 600 based on the reception timing of the
ultrasonic wave by the ultrasonic microphone 700. Although three-point surveying is the basic
principle of position detection using ultrasonic waves, any method may be used as long as the
distance L between the designated position of the center speaker C and the viewing point can be
measured. By obtaining the distance L, the control device 100 can grasp the absolute position
including the distance of the recommended arrangement of the speaker device 200 obtained in
step S1. When the distance L is obtained, the switch 607 for controlling the driving of the
ultrasonic wave generator 605 is turned off. The absolute position of the recommended position
is calculated on the assumption that a straight line connecting the set position of the center
speaker C and the measured position of the position pointer device is perpendicular to the sound
output surface of the center speaker C. Be done.
[0050]
Next, in step S4, the control device 100 blinks one of the recommended arrangement positions
displayed on the display device 400, and provides guidance to the user to install one speaker
device 200 there. The user places one of the speaker devices 200 in one of the recommended
arrangement positions according to this guidance. More specifically, the battery 217 is attached
to the position information transmitting unit 210 of the speaker device 200 to be arranged, and
the switch 218 for controlling the driving of the ultrasonic oscillator 216 is turned on, and the
control device 100 performs this ultrasonic oscillation. Allow control of the child 216. At this
time, the switch for controlling the drive of each ultrasonic oscillator is turned off or the battery
is turned off so that the ultrasonic oscillators 216 of the other speaker devices 200 and the
ultrasonic oscillators 605 of the position pointer device 600 are not driven. Leave it unmounted.
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16
[0051]
The control device 100 controls the driving of the ultrasonic wave oscillator 216 built in the
position information notification unit 210 of the speaker device 200 by infrared communication.
The ultrasonic microphones 700 mounted at the four corners of the display device 400 receive
the ultrasonic waves. The control device 100 instantaneously detects the position of the speaker
device 200 based on the reception timing of the ultrasonic waves by the ultrasonic microphone
700 and displays the position on the display device 400. Although three-point surveying is the
basic principle of position detection using ultrasonic waves, any method may be used as long as
the position of the speaker device 200 can be detected instantaneously.
[0052]
FIG. 8 shows how the speaker device 200 is moved to the recommended arrangement position
guided. FIG. 8A is a top view showing how the speaker device 200 is moved to the recommended
arrangement position FL. It is shown that the speaker device 200 on the left side of the drawing
is moving, and the ultrasonic oscillator 216 is in operation (the switch 218 is ON). The five
speaker devices 200 drawn by solid lines on the right of the figure are the speaker devices 200
not installed yet, and show a state where the ultrasonic oscillator 216 is not driven.
[0053]
(B) of FIG. 8 is an example in which the situation at that time is displayed on the display device
400. The user compares the recommended arrangement position of the speaker device 200
guided by the display device 400 with the position of the speaker device 200 in motion (in this
example, displayed by the black point 701) while comparing the speaker device 200. Install at
the recommended location. In the display, the recommended position of the center speaker C is
the position designated by the user. When the speaker device 200 can not be installed at the
recommended arrangement position due to a restriction of a room, the speaker device 200 is
installed as close to the recommended arrangement position as possible. When the control device
100 detects that the speaker device 200 is placed at the recommended placement position, the
control device 100 stops blinking display of the recommended placement position, and the
ultrasonic oscillator of the speaker device installed at the recommended placement position using
infrared communication. Stop driving. Then, the control unit 100 blinks the next recommended
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arrangement position to prompt the user to arrange the speakers. At this time, the control device
100 turns off the switch 218 for controlling the drive of the ultrasonic wave transmitter of the
speaker device placed at the recommended arrangement position, and switches the switch 218
for driving the ultrasonic wave transmitter of the speaker device to be installed next. The display
device 400 displays a message so as to turn it on. According to this message, the user turns off
the switch 218 of the speaker device 200 and turns on the switch 218 of the speaker device 200
to be arranged next, and the above process is repeated for the next arrangement position.
[0054]
In addition, it is also possible for the user to decide the order of arranging the speaker device
200 at the recommended arrangement position. This is because the control device 100 can grasp
the absolute position of the recommended arrangement of the speaker device 200 and can detect
the position of the speaker device 200 instantaneously, so that the control device 100 can know
where the user installed the speaker device. In addition, when it is detected that the speaker
device 200 has moved to any of the recommended arrangement positions, the user can more
easily install the speaker device 200 at the recommended arrangement position by notifying that
fact. . This can be realized, for example, by displaying a message indicating that the speaker
device 200 has come to the recommended position on the display screen of the display device
400. Further, the speaker device 200 is notified that the recommended arrangement position has
been reached by emitting a sound from a speaker device (not shown) equipped in the display
device 400 or a buzzer (not shown) equipped in the control device 100. You may do so.
[0055]
Further, the control device 100 notifies the user that the speaker device 200 is installed at the
recommended placement position guided by the above method (the stop of the blinking display).
Thereafter, in step S5, information (identifier) for identifying the speaker device 200 is attached
by infrared communication. The speaker device 200 stores the assigned identifier in the
identifier storage unit 213. Here, “1” is stored as an identifier.
[0056]
Since the control device 100 knows the recommended arrangement position to be guided and
the identifier given to the speaker device 200, the control device 100 finally has correspondence
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table data as shown in FIG. From this correspondence table, it can be seen that the speaker
apparatus 200 with the identifier "1" is installed at FL (front left) of the recommended
arrangement positions. Therefore, control device 100 sets identifier “1” as the header
information for audio data to be transmitted through common transmission path 300 and to be
output from the FL speaker device. As a result, audio data for FL is allocated. In addition, the
specific method of assignment | providing of an identifier can be considered variously not only
this but by application. Also, this identifier is also used as a network ID in communication on the
common transmission path 300 later.
[0057]
In step S6, the control device 100 confirms whether the installation of all the speaker devices
200 is completed. If there is a speaker device that has not been installed, the process returns to
step S4, and the above process is repeated. That is, the control device 100 guides the user to
install another non-installed speaker device 200 at another recommended arrangement position.
[0058]
When the installation of all the speaker devices 200 is completed, in step S7, the control device
100 performs guidance display so as to connect the cable of each speaker device 200. Here, the
control device 100 displays the recommended cable wiring diagram, the required number of
cables, the length thereof, and the like on the display device 400. The user refers to these and
performs cable connection between the speaker device 200 and the control device 100. At this
time, it is also possible for the user to designate cable wiring and to designate some sections to
be wireless.
[0059]
Next, in step S8, the control device 100 forms communication on the common transmission path
300 using the identifier stored in the identifier storage unit 213 as the network ID. Then, the
control device 100 forms appropriate audio data for each speaker device 200, assigns an
identifier using the correspondence table of FIG. 7, and transmits the audio data on the common
transmission path 300.
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[0060]
After this, sound field correction is performed if necessary, as in the case of the current sound
system. However, if the speaker device can be installed at the recommended arrangement
position according to the present invention, it is possible to reproduce the voice faithful to the
original sound without performing the sound field correction.
[0061]
Second Embodiment FIG. 9 is a diagram showing an example of a system configuration of an
acoustic system according to a second embodiment. In the first embodiment, the speaker device
200 incorporating the network I / F 205 and the ultrasonic wave oscillator 216 is used, but in
the second embodiment, they are used as separate units. In the second embodiment, this separate
unit is referred to as an adapter device 1000. 9, the control device 100 other than the speaker
device 1100, the display device 400, the display device cable 500, and the position pointer
device 600 are the same as in the first embodiment shown in FIG.
[0062]
FIG. 10 is a block diagram showing the hardware configuration of the adapter device 1000. As
shown in FIG. From the block diagram showing the configuration of the speaker device 200
shown in FIG. 3, the speaker drive unit 208 and the speaker unit 209 are deleted, and a speaker
device I / F 1008 is added. The other blocks in FIG. 10 have the same functions as the blocks in
FIG. 3, and the blocks in common with FIG. 3 are assigned the same reference numerals as in FIG.
[0063]
When the adapter device 1000 is connected, a general-purpose active speaker can be used as the
speaker device 1100 for an audio system to which the present invention is applied. Further, if it
is possible to include even a power supply and a speaker drive unit necessary for the adapter
device 1000, it is possible to use a general-purpose passive speaker as the speaker device 1100
for an audio system to which the present invention is applied. Furthermore, as described in the
first embodiment, the position information transmission unit 1010 may be a separate unit.
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[0064]
The method of performing the initial setting including the setting of the speaker position in the
sound system of the second embodiment can be understood by replacing the speaker device with
the speaker device equipped with the adapter device or the adapter device in the flowchart of
FIG. Therefore, the description is omitted here.
[0065]
Further, when only the adapter device 1000 is moved to the recommended arrangement
position, there is an advantage that it is not necessary to search for the installation position while
holding the heavy speaker device. However, there may be some errors when connecting the
adapter device and the speaker device later.
[0066]
[Other Embodiments and Modifications] Although the bus type network has been described as an
example of the common transmission path in the above-described embodiment, the form of the
transmission path is not limited to this and may be a daisy chain or wireless. If seamless
transmission (transmission in which the user does not notice switching of the network such as
bus type, daisy chain, wireless, etc. transmission) is possible, a combination of these may be used.
The present invention can also be applied to a star network. In this case, placement of the
speaker device at the recommended placement position, detection of erroneous wiring, and the
like can be performed.
[0067]
Moreover, although the example which used cheap infrared communication at the time of
installation of a speaker was shown in the said embodiment, this invention is not limited to this.
As an alternative to infrared communication, for example, communication using a cable such as a
wireless LAN, RFID, or USB can be mentioned. Moreover, although the ultrasonic wave was
utilized as a means to detect the position of a speaker apparatus, this invention is not limited to
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it. Although the example which used the ultrasonic wave in consideration of position accuracy,
responsiveness, silence, cost, etc. was shown, if there is another method satisfying these, it is also
possible to use it. As an alternative to ultrasonic position detection, for example, a detection
method using a wireless LAN, an RFID, a laser or the like can be mentioned.
[0068]
As described above, according to each of the above embodiments, in the acoustic system in which
a plurality of speaker devices and the control device are connected by a common transmission
path, initial settings such as the arrangement of the speaker devices and the wiring of the cables
can be easily performed. become. In addition, proper arrangement of the speaker device is
possible, and faithful reproduction to the original sound can be performed.
[0069]
The control devices 100 and 1000 described above according to the flowchart of FIG. 6 are
realized by the CPU 202 executing a control program stored in the ROM 203 or the RAM 204.
Therefore, it is also possible to use a general purpose computer device (such as a personal
computer) as the control device 100, 1000. Thus, according to the present invention, the
functions of the above-described embodiments are achieved by supplying a program of software
to a system or apparatus directly or remotely, and a computer of the system or apparatus reading
and executing the supplied program code. Cases, including In this case, the supplied program is a
program corresponding to the flowchart shown in the drawings in the embodiment.
[0070]
Therefore, the program code itself installed in the computer to realize the functional processing
of the present invention by the computer also implements the present invention. That is, the
present invention also includes a computer program itself for realizing the functional processing
of the present invention.
[0071]
In that case, as long as it has a program function, it may be in the form of an object code, a
program executed by an interpreter, script data supplied to an OS, or the like.
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[0072]
The following may be mentioned as a recording medium for supplying the program.
For example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk,
MO, CD-ROM, CD-R, CD-RW, magnetic tape, non-volatile memory card, ROM, DVD (DVD-ROM,
DVD- R) etc.
[0073]
In addition, as a program supply method, a browser of a client computer is used to connect to a
home page of the Internet, and the computer program of the present invention is downloaded
from the home page to a recording medium such as a hard disk. In this case, the downloaded
program may be a compressed file including an automatic installation function. The present
invention can also be realized by dividing the program code constituting the program of the
present invention into a plurality of files and downloading each file from different home pages.
That is, the present invention also includes a WWW server which allows a plurality of users to
download program files for realizing the functional processing of the present invention by a
computer.
[0074]
Further, the program of the present invention may be encrypted, stored in a storage medium
such as a CD-ROM, and distributed to users. In this case, the user who has cleared the
predetermined condition is made to download the key information for decrypting the encryption
from the home page via the Internet, execute the encrypted program using the key information,
and install the program on the computer You can also
[0075]
In addition to the functions of the above-described embodiments being realized by the computer
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executing the read program, the computer according to the embodiment of the present invention
operates in cooperation with an OS or the like operating on the computer based on the
instructions of the program. A function may be realized. In this case, the OS or the like performs
part or all of the actual processing, and the functions of the above-described embodiment are
realized by the processing.
[0076]
Furthermore, a program read from a recording medium is written in a memory provided in a
function expansion board inserted into the computer or a function expansion unit connected to
the computer, and some or all of the functions of the above-described embodiments are realized.
May be In this case, after the program is written to the function expansion board or the function
expansion unit, the CPU provided in the function expansion board or the function expansion unit
performs part or all of the actual processing based on the instruction of the program.
[0077]
It is a figure which shows the system configuration | structure of the acoustic system which
becomes 1st Embodiment of this invention. It is a block diagram which shows the hardware
constitutions of the control apparatus which comprises 1st Embodiment. It is a block diagram
which shows the hardware constitutions of the speaker apparatus which comprises 1st
Embodiment. It is a block diagram which shows the hardware constitutions of the position
pointer apparatus which comprises 1st Embodiment. The first embodiment is an example in
which an ultrasonic microphone is attached to a display device. It is a flowchart of the principal
part of 1st Embodiment. In 1st Embodiment, it is a table which shows the relationship between
the identifier provided to each speaker apparatus, and its arrangement position. (A) is a figure
which showed a mode that the speaker apparatus was moved to the recommendation
arrangement | positioning position in 1st Embodiment, (b) moved the speaker apparatus to the
recommendation arrangement | positioning position in 1st Embodiment. It is the figure which
showed the example of the display screen displayed on a display apparatus at the time of. It is a
figure which shows the system configuration | structure of the sound system which becomes 2nd
Embodiment of this invention. It is a block diagram which shows the hardware constitutions of
the adapter apparatus which comprises 2nd Embodiment. It is a block diagram showing the
example of composition of the conventional common sound system. It is a figure which shows
the example of the recommended arrangement | positioning diagram of the speaker apparatus in
an acoustic system.
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