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JP2017060140

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DESCRIPTION JP2017060140
Abstract: [Problem] To provide a technology capable of efficiently changing the output
characteristics of music data with a simple operation regardless of whether music data is being
reproduced or not. An audio controller (2) specifies a use environment of a wireless speaker (1)
from imaging data of an installation room of the wireless speaker (1). Then, the output
characteristic suitable for the specified use environment is selected, and the selected output
characteristic is set as the output characteristic of the music data output from the wireless
speaker 1. Here, from the imaging data of the installation room of the wireless speaker 1
captured by aligning the wall behind the wireless speaker 1 and the boundaries of the both sides
with the corners of the angle of view, the width and loudspeaker of the wall behind the wireless
speaker 1 The ratio with the width of the wireless speaker 1 is determined, and the size of the
installation room of the wireless speaker 1 is specified based on this ratio, and this is used as a
use environment. In addition, the installation position of the speaker is specified based on the
display position of the speaker in the imaging data, and this is also used as a use environment.
[Selected figure] Figure 1
Computer readable program, audio controller and wireless audio system
[0001]
The present invention relates to a technique for controlling output characteristics of an audio
device.
[0002]
07-05-2019
1
Patent Document 1 discloses a wireless audio system including a plurality of wireless speakers
classified into a plurality of groups, and capable of reproducing music data different for each
group.
In this wireless audio system, for each group, a plurality of wireless speakers belonging to the
group perform arbitration to select one wireless speaker from among these wireless speakers.
Then, the selected wireless speaker serves as a group leader, receives an operation on a plurality
of wireless speakers belonging to the same group from the user, and transmits a control signal to
these wireless speakers. According to this wireless audio system, for example, it is possible to
reproduce different music data for each room by installing a plurality of wireless speakers in a
plurality of rooms and setting the wireless speakers installed in the same room in the same
group. it can.
[0003]
Generally, the output characteristics (volume level, acoustic characteristics, sound field effect,
etc.) of the reproduction signal of music data are set to an appropriate output characteristic by
the user via the audio controller. Here, how to listen to music data output from the speakers
varies depending on the size of a room in which the speakers are installed, the use environment
of the speakers such as the installation position of the speakers in the room, and the like. For this
reason, the user has to search for an appropriate output characteristic while listening to the
music data output from the speaker. In particular, in the wireless audio system described in
Patent Document 1, since the use environment of the speaker is different for each group, the
user has to search for an appropriate output characteristic for each group, which is cumbersome.
[0004]
On the other hand, Patent Document 2 discloses an acoustic device capable of automatically
selecting and applying an acoustic (frequency) characteristic optimum for a use environment of a
speaker. The audio device outputs a test signal from the speaker for each channel and collects it
with a microphone. Then, the sound collection data is analyzed for each frequency, and an
optimal acoustic characteristic is selected from the analysis result of each channel.
[0005]
07-05-2019
2
U.S. Pat. No. 7,987,294 Specification
[0006]
However, in the audio device described in Patent Document 2, the music data can not be
reproduced during the reproduction of the test signal, and the reproduction of the music data
must be awaited until the reproduction of the test signals of all the channels is completed.
[0007]
In addition, the output characteristics can not be changed during reproduction of music data.
Therefore, for example, in the case of using a wireless speaker which can be easily moved, there
is a problem that the usability is poor particularly in the use environment of the speaker where
the installation position and the installation room of the speaker are frequently changed.
[0008]
The present invention has been made in view of the above circumstances, and an object thereof
is a technique capable of changing the output characteristics of music data more efficiently by a
simple operation regardless of whether music data is being reproduced or not. To provide.
[0009]
In order to solve the above-mentioned subject, in the present invention, the use environment of a
speaker is specified from the image pick-up data of the installation area of a speaker.
Then, an output characteristic suitable for the specified use environment is selected, and the
selected output characteristic is set as the output characteristic of the music data output from the
speaker.
For example, the ratio of the width of the wall behind the speaker to the width of the speaker is
obtained from the imaging data of the installation area of the speaker where the boundaries on
both sides of the wall behind the speaker are aligned with both corners of the angle of view The
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3
size of the installation area of the speaker may be specified based on the above, and this may be
used as a use environment of the speaker. Moreover, based on the display position of the speaker
in this imaging data, the installation position of the speaker in an installation area may be
specified, and this may be used as a use environment of a speaker.
[0010]
For example, the present invention is a computer-readable program, the program including: the
output characteristic storage means storing the output characteristic of the reproduction signal
for each use environment of the speaker; and the speaker Use environment specifying means for
specifying the usage environment of the speaker based on the imaging data acquisition means
for acquiring imaging data of the installation area of the speaker, the imaging data acquired by
the imaging data acquisition means, and the use environment identification means An audio
output controller that determines output characteristics stored in the output characteristics
storage unit in association with the use environment specified by the output characteristics of the
reproduction signal output from the speaker Act as
[0011]
Here, the imaging data acquisition unit acquires imaging data of the installation area of the
speaker in which the boundaries of both sides of the wall behind the speaker are aligned with
both corners of the angle of view, and the use environment specifying unit As a use environment
of a speaker, a ratio of a width of a wall behind the speaker to a width of the speaker may be
obtained from the imaging data, and the size of the installation area of the speaker may be
specified based on the ratio. .
Alternatively, based on the display position of the speaker in the imaging data, the installation
position of the speaker in the installation area may be specified.
[0012]
In addition, the imaging data acquisition unit may be configured to image and acquire imaging
data of the installation room of the speaker using a camera function of the computer.
[0013]
The apparatus may further include output characteristic transmitting means for transmitting the
output characteristic specified by the output characteristic determining means to a
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4
predetermined audio device such as a wireless speaker having an audio reproduction function.
[0014]
In the present invention, the use environment of the speaker is specified from the imaging data
of the installation area of the speaker, and the output characteristic suitable for the specified use
environment is set as the output characteristic of the reproduction signal of the music data
output from the speaker. The output characteristic of the reproduction signal of the music data
can be set without taking time by merely imaging the installation area of the speaker.
Therefore, according to the present invention, it is possible to change the output characteristics
of the music data more efficiently by a simple operation, regardless of whether the music data is
being reproduced or not.
[0015]
FIG. 1 is a schematic block diagram of a wireless audio system according to an embodiment of
the present invention.
FIGS. 2A and 2B are diagrams for explaining a method of specifying a use environment of the
wireless speaker 1 from image data of a room where the wireless speaker 1 is installed. FIG. 3 is
a schematic functional block diagram of the wireless speaker 1. FIG. 4 is a flowchart for
explaining the operation of the wireless speaker 1. FIG. 5 is a schematic functional block diagram
of the audio controller 2. FIG. 6 is a diagram schematically showing an example of registered
contents of the output characteristic storage unit 26. As shown in FIG. FIG. 7 is a flow chart for
explaining the operation of the audio controller 2.
[0016]
Hereinafter, an embodiment of the present invention will be described with reference to the
drawings.
[0017]
FIG. 1 is a schematic configuration diagram of a wireless audio system according to the present
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5
embodiment.
[0018]
As illustrated, the wireless audio system according to the present embodiment includes a
plurality of wireless speakers 1-1 to 1-3 (hereinafter also referred to simply as the wireless
speaker 1) to which an ID is given, and a portable phone having a camera function. It comprises
an audio controller 2 which is a terminal, and a media server 3 and an access point 4 connected
to a network 5.
Here, it is assumed that the wireless speakers 1-1 to 1-3 are respectively installed in the rooms A
to C.
[0019]
The wireless speaker 1 is connected to the audio controller 2 and the media server 3 via the
access point 4, acquires music data from the media server 3 in accordance with a reproduction
instruction received from the audio controller 2, and reproduces and outputs the music data.
Also, according to the output setting instruction received from the audio controller 2, the output
characteristic of the reproduction signal of the music data is set.
[0020]
The audio controller 2 is also connected to the wireless speaker 1 and the media server 3 via the
access point 4, and reproduction is performed including specification of music data selected by
the user from among music data stored in the media server 3. The instruction is transmitted to
the output destination wireless speaker 1 of the music data. Further, the audio controller 2
specifies the use environment of the wireless speaker 1 from the imaging data of the installation
room of the wireless speaker 1 and transmits a power setting instruction including designation of
output characteristics suitable for the use environment to the wireless speaker 1 .
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[0021]
FIGS. 2A and 2B are diagrams for explaining a method of specifying a use environment of the
wireless speaker 1 from image data of a room where the wireless speaker 1 is installed.
[0022]
In the present embodiment, the first imaging data obtained by imaging the installation room of
the wireless speaker 1 from the front of the wireless speaker 1 and the second imaging data
obtained by imaging the installation room of the wireless speaker 1 from the side of the wireless
speaker 1 The size and the installation position of the installation room of the wireless speaker 1
are specified as the use environment of the wireless speaker 1.
[0023]
First, the user uses the camera function of the audio controller 2 to demarcate the boundaries
601 and 602 between the wall 60 behind the wireless speaker 1 and the walls 61 and 62 on
both sides as shown in FIG. The wireless speaker 1 is imaged from the front of the wireless
speaker 1 in accordance with the corners 701 and 702 of the angle of view 70.
Thereby, the audio controller 2 acquires the first imaging data.
Here, a label 100 unique to the wireless speaker 1 is attached to the front of the wireless speaker
1.
[0024]
The audio controller 2 performs image recognition processing on the first imaging data to
identify the label 100, and identifies the outline of the wireless speaker 1 to which the label 100
is attached. Then, the width (number of pixels) T1 of the wireless speaker 1 is detected from the
identified contour, and a ratio W1 / T1 of the width (number of pixels) W1 of the first imaging
data and the detected T1 is calculated. Then, based on the calculated ratio W1 / T1, as the width
size of the installation room of the wireless speaker 1, the size (large, middle, small) of the width
of the wall 60 behind the wireless speaker 1 is specified. For example, if the ratio W1 / T1 is 10
or more, the size of the installation room of the wireless speaker 1 is "large", and if it is less than
10 and 5, the size of the installation room of the wireless speaker 1 is "medium", 5 If it is less
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7
than this, the size of the installation room of the wireless speaker 1 is "small". Further, based on
the display position of the wireless speaker 1 in the first imaging data, the position (center /
corner) of the wireless speaker 1 with respect to the width of the installation room is specified.
For example, when the first imaging data is divided into four areas in the direction of width W1,
if the wireless speakers 1 exist in the two central areas, the position of the wireless speakers 1
with respect to the width of the installation room If it exists in the other area, the position of the
wireless speaker 1 with respect to the width of the installation room is taken as a “corner”.
[0025]
Next, the user uses the camera function of the audio controller 2 and as shown in FIG. 2 (B), the
boundary 631 between the wall 61 on the side of the wireless speaker 1 and the walls 63 and 60
on both sides, The wireless speaker 1 is imaged by aligning 601 with the corners 701 and 702 of
the angle of view 70. Thereby, the audio controller 2 acquires the second imaging data. Here, a
label 100 is also attached to the side surface of the wireless speaker 1. The audio controller 2
performs image recognition processing on the second imaging data to identify the label 100, and
identifies the outline of the wireless speaker 1 to which the label 100 is attached. Then, the width
(number of pixels) T2 of the wireless speaker 1 is detected from the specified contour, and a ratio
W2 / T2 of the width (number of pixels) W2 of the second imaging data and the detected T2 is
calculated. Then, based on the calculated ratio W2 / T2, the size (large, medium, small) of the
width of the wall 61 on the side of the wireless speaker 1 is specified as the size of the depth of
the installation room of the wireless speaker 1. For example, if the ratio W2 / T2 is 10 or more,
the depth of the installation room of the wireless speaker 1 is "large". If the ratio W2 / T2 is 10
or more and 5 or more, the depth of the installation room of the wireless speaker 1 is "medium",
5 If it is less than this, the size of the depth of the installation room of the wireless speaker 1 is
"small". Further, based on the display position of the wireless speaker 1 in the second imaging
data, the position (center / corner) of the wireless speaker 1 with respect to the depth of the
installation room is specified. For example, when the second imaging data is divided into four
areas in the direction of the width W2, if the wireless speakers 1 exist in the central two areas,
the position of the wireless speakers 1 with respect to the depth of the installation room If it is in
the other area, the position of the wireless speaker 1 with respect to the depth of the installation
room is taken as the “corner”.
[0026]
The audio controller 2 specifies the size of the installation room of the wireless speaker 1 based
on the width and depth of the installation room of the wireless speaker 1 specified as described
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above. For example, the size of the installation room of the wireless speaker 1 is "large" if both
the width and the depth size are "large", "small" if both are "small", and "medium" otherwise I
assume. Similarly, the installation position of the wireless speaker 1 in the room is specified
based on the position of the wireless speaker 1 specified as described above with respect to the
width and depth of the installation room. For example, let the installation position of the wireless
speaker 1 in the room be “center” if the positions relative to the width and depth of the
installation room are both “center”, and “corner” otherwise.
[0027]
Next, the details of the wireless speaker 1 and the audio controller 2 of the wireless audio system
according to the present embodiment will be described. In addition, since the existing media
server and access point can be utilized for the media server 3 and the access point 4, the detailed
description is abbreviate | omitted.
[0028]
First, the wireless speaker 1 will be described.
[0029]
FIG. 3 is a schematic functional block diagram of the wireless speaker 1.
The functional configuration of the wireless speaker 1 shown in this figure is, for example, a
computer including a CPU, a memory, an auxiliary storage device such as a flash memory, a
wireless communication device such as a wireless LAN adapter, and a speaker. It is realized by
loading a predetermined program from the auxiliary storage onto the memory and executing it.
[0030]
As illustrated, the wireless speaker 1 outputs a wireless network interface unit 10, an instruction
receiving unit 11, a music data acquisition unit 12, a music data storage unit 13, a music data
reproduction unit 14, a speaker unit 15, and an output. And a characteristic setting unit 16.
[0031]
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9
The wireless network interface unit 10 is an interface for communicating with the audio
controller 2 via the access point 4 and for communicating with the media server 3 connected to
the network 5.
[0032]
The instruction receiving unit 11 receives, from the audio controller 2 via the wireless network
interface unit 10, various instructions to which the ID of the wireless speaker 1 is assigned.
Then, if the received instruction is a reproduction instruction accompanied by the specification of
the music data, an acquisition instruction including the specification of the music data specified
by the reproduction instruction is passed to the music data acquisition unit 12.
If the received instruction is an output setting instruction including the specification of the
volume level, the acoustic (frequency) characteristic, and the sound field effect, the output setting
instruction is passed to the output characteristic setting unit 16.
[0033]
When the music data acquisition unit 12 receives an acquisition instruction from the instruction
reception unit 11, the music data acquisition unit 12 transmits a music data request including
specification of music data designated by the acquisition instruction to the media server 3 via the
wireless network interface unit 10. Then, music data to be acquired is acquired from the media
server 3.
[0034]
The music data storage unit 13 stores the music data acquired by the music data acquisition unit
12 from the media server 3.
[0035]
The music data reproduction unit 14 reproduces the music data stored in the music data storage
unit 13 according to the volume level, the acoustic characteristics, and the sound field effect set
by the output characteristic setting unit 16 and outputs the reproduced data from the speaker
unit 15 .
07-05-2019
10
[0036]
When receiving the output setting instruction from the instruction receiving unit 11, the output
characteristic setting unit 16 sets the volume level, the acoustic characteristic, and the sound
field effect designated by the output setting instruction in the music data reproduction unit 14.
[0037]
FIG. 4 is a flowchart for explaining the operation of the wireless speaker 1.
This flow is started by the wireless network interface unit 10 receiving an instruction multicasttransmitted from the audio controller 2.
[0038]
First, the wireless network interface unit 10 determines whether the ID of the wireless speaker 1
is assigned to the received instruction (S101).
[0039]
If the ID of the own wireless speaker 1 is not assigned (NO in S101), this instruction is discarded
(S102), and the process is ended.
[0040]
On the other hand, when the ID of the wireless speaker 1 is assigned, this instruction is passed to
the instruction receiving unit 11.
In response to this, the instruction receiving unit 11 determines whether the instruction received
from the wireless network interface unit 10 is a reproduction instruction or an output setting
instruction (S103).
[0041]
When the instruction received from the wireless network interface unit 10 is the reproduction
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11
instruction (“reproduction” in S103), the instruction receiving unit 11 acquires the acquisition
instruction including the specification of the music data designated by the reproduction
instruction as the music data acquisition unit Pass to 12
[0042]
When the music data acquisition unit 12 receives the acquisition instruction from the instruction
reception unit 11, the music data acquisition unit 12 transmits a music data request including
the specification of the music data designated by the acquisition instruction to the media server 3
via the wireless network interface unit 10. (S104).
When music data is received from the media server 3, the music data is stored in the music data
storage unit 13 (S105).
In response to this, the music piece data reproduction unit 14 reproduces the music piece data
stored in the music piece data storage unit 13 according to the volume level, the acoustic
characteristic, and the sound field effect set by the output characteristic setting unit 16. Output
from 15 (S106).
[0043]
On the other hand, when the instruction received from the wireless network interface unit 10 is
an output setting instruction (“output setting” in S103), the volume level, the acoustic
characteristics, and the sound field effect designated by the output setting instruction are played
back It sets to the part 14 (S107).
Thereby, thereafter, the music data reproduction unit 14 reproduces the music data stored in the
music data storage unit 13 according to the volume level, the acoustic characteristic, and the
sound field effect newly set by the output characteristic setting unit 16, Output from the speaker
unit 15.
[0044]
Next, the audio controller 2 will be described.
07-05-2019
12
[0045]
FIG. 5 is a schematic functional block diagram of the audio controller 2.
The functional configuration of the audio controller 2 shown in this figure is, for example, a CPU,
a memory, an auxiliary storage device such as a flash memory, an input / output device such as a
touch panel, a display or a pointing device, and a wireless communication device such as a
wireless LAN adapter In a portable computer such as a smart phone and a tablet PC provided
with a camera and a camera, the CPU loads the predetermined program from the auxiliary
storage device onto the memory and executes the program.
[0046]
As illustrated, the audio controller 2 includes a wireless network interface unit 20, a graphical
user interface unit 21, a music list acquisition unit 22, a reproduction instruction transmission
unit 23, an imaging data acquisition unit 24, and a use environment specification unit 25. , An
output characteristic storage unit 26, an output characteristic determination unit 27, and an
output setting instruction transmission unit 28.
[0047]
The wireless network interface unit 20 is an interface for communicating with the wireless
speaker 1 via the access point 4 and for communicating with the media server 3 connected to the
network 5.
[0048]
The graphical user interface unit 21 is an interface for displaying information and receiving
various operations from the user.
[0049]
The music list acquisition unit 22 acquires a music list which is a list of music data stored in the
media server 3 from the media server 3 via the wireless network interface unit 20, and acquires
the acquired music list as a graphical user interface unit Display on 21.
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13
[0050]
The reproduction instruction transmission unit 23 multicasts a reproduction instruction
including specification of music data to be reproduced and an ID of the output destination
wireless speaker 1 from the wireless network interface unit 20.
[0051]
The imaging data acquisition unit 24 acquires first imaging data (see FIG. 2A) and second
imaging data (see FIG. 2B) of the installation room of the wireless speaker 1 captured by the
camera function of the audio controller 2. Get).
[0052]
The use environment specifying unit 25 uses the first and second imaging data acquired by the
imaging data acquisition unit 24 to use the size of the installation room of the wireless speaker 1
and the installation position of the wireless speaker 1 using the wireless speaker 1 Identify as an
environment.
[0053]
The output characteristic storage unit 26 stores, for each wireless speaker 1, information
indicating the correspondence between the use environment and the output characteristic.
FIG. 6 is a diagram schematically showing an example of registered contents of the output
characteristic storage unit 26. As shown in FIG.
[0054]
As illustrated, in the output characteristic storage unit 26, a table 260 is stored in association
with the ID of the wireless speaker 1 for each wireless speaker 1.
The table 260 stores, for each use environment of the wireless speaker 1, a record 268 of output
characteristics suitable for the use environment.
07-05-2019
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The record 268 has a field 261 in which the use environment is registered and a field 262 in
which the output characteristic is registered.
The field 261 has a subfield 263 in which the size of the installation room of the wireless speaker
1 is registered, and a subfield 264 in which the installation position of the wireless speaker 1 is
registered.
A field 262 includes a sub-field 265 in which the volume level is registered, a sub-field 266 in
which acoustic characteristics (output levels of high and low ranges, middle and low ranges) are
registered, and sound field effect (phase difference between channels) And the sub-field 267
registered).
[0055]
The output characteristic determination unit 27 refers to the table 260 stored in the output
characteristic storage unit 26 in association with the ID of the output destination wireless
speaker 1 and associates the output environment with the use environment specified by the use
environment specification unit 25. The output characteristic being specified is specified, and this
output characteristic is determined as the output characteristic of the output destination wireless
speaker 1.
[0056]
The output setting instruction transmitting unit 28 multicast-transmits, from the wireless
network interface unit 20, an output setting instruction accompanied by the specification of the
output characteristic determined by the output characteristic determining unit 27 and the ID of
the output destination wireless speaker 1.
[0057]
FIG. 7 is a flow chart for explaining the operation of the audio controller 2.
This flow is started when the graphical user interface unit 21 receives an operation from the
user.
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[0058]
First, the graphical user interface unit 21 analyzes the operation content received from the user
(S201).
[0059]
If the operation received from the user is a music list acquisition operation (“acquisition
operation” in S201), the graphical user interface unit 21 notifies the music list acquisition unit
22 to that effect.
[0060]
In response to this, the music list acquisition unit 22 transmits a music list request to the media
server 3 via the wireless network interface unit 20 (S202).
Then, the music list acquisition unit 22 acquires the music list of the music data stored in the
media server 3 from the media server 3, and displays the acquired music list on the graphical
user interface unit 21 (S203).
[0061]
In addition, if the operation received from the user is a reproduction operation involving
specification of music data to be reproduced and the ID of the output destination wireless
speaker 1 (“reproduction operation” in S201), the graphical user interface unit 21 reproduces
that effect. The instruction transmission unit 23 is notified.
[0062]
In response to this, the reproduction instruction transmission unit 23 generates a reproduction
instruction accompanied by the specification of the music data to be reproduced designated by
the reproduction operation and the ID of the output destination wireless speaker 1.
Then, the reproduction instruction is transmitted by multicast from the wireless network
interface unit 20 (S204).
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[0063]
Furthermore, if the operation received from the user is an output setting operation involving
specification of the ID of the output destination wireless speaker 1 (“output setting operation”
in S201), the graphical user interface unit 21 indicates that the imaging data acquisition unit 24
Notify
[0064]
In response to this, the imaging data acquisition unit 24 causes the user to image the installation
room of the wireless speaker 1 using the camera function of the audio controller 2, and the first
imaging data (see FIG. 2A) and the second Imaging data (see FIG. 2B) is acquired (S205).
Then, the acquired first and second imaging data are passed to the use environment
identification unit 25 together with the ID of the output destination wireless speaker 1.
[0065]
Next, the usage environment specifying unit 25 uses the first imaging data received from the
imaging data acquisition unit 24 as described with reference to FIG. 2A, and the size of the width
of the installation room of the wireless speaker 1 , And the position of the wireless speaker 1
with respect to the width of the installation room.
Similarly, as described with reference to FIG. 2B, using the second imaging data received from
the imaging data acquisition unit 24, the size of the depth of the installation room of the wireless
speaker 1 and the installation of the wireless speaker 1 Identify the location relative to the depth
of the room.
And while specifying the size of the installation room of the wireless speaker 1 as the use
environment of the wireless speaker 1 based on the width and depth of the installation room of
the wireless speaker 1, the width and depth of the installation room of the wireless speaker 1
The installation position of the wireless speaker 1 in the room is specified based on the position
with respect to the (S206).
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Then, the use environment specifying unit 25 passes the use environment of the wireless speaker
1 specified as described above to the output characteristic determination unit 27 together with
the ID of the output destination wireless speaker 1.
[0066]
Next, the output characteristic determining unit 27 associates the ID of the output destination
wireless speaker 1 received from the operating environment specifying unit 25 with the
operating environment received from the operating environment specifying unit 25 as a key, A
record 268 is retrieved from the stored table 260.
Specifically, the record 268 in which the size of the installation room of the wireless speaker 1
and the installation position of the wireless speaker 1 included in the use environment received
from the use environment identification unit 25 are registered in the subfields 263 and 264.
Search for.
Then, the output characteristic registered in the field 262 of the retrieved record 268 is
determined as the output characteristic of the output destination wireless speaker 1 (S207).
Then, the determined output characteristic is passed to the output setting instruction
transmission unit 28 together with the ID of the output destination wireless speaker 1.
[0067]
Next, the output setting instruction transmission unit 28 generates an output setting instruction
accompanied by the specification of the output characteristic received from the output
characteristic determination unit 27 and the ID of the output destination wireless speaker 1.
Then, the output setting instruction is transmitted by multicast from the wireless network
interface unit 20 (S208).
[0068]
Heretofore, an embodiment of the present invention has been described.
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[0069]
In this embodiment, the use environment of the wireless speaker 1 is identified from the imaging
data (first and second imaging data) of the installation room of the wireless speaker 1, and the
output characteristics suitable for the identified use environment are Set to the output
characteristics of the music data output from 1.
Therefore, the user can set the output characteristics of the music data simply by imaging the
room where the wireless speaker 1 is installed. Here, since the output characteristics are
determined without using a test signal or the like, it is possible to set the output characteristics of
music data in a shorter time, unlike the prior art in which it takes time to reproduce all the test
signals. Therefore, according to the present embodiment, it is possible to change the output
characteristics of the music data more efficiently by a simpler operation.
[0070]
In addition, since a test signal or the like is not used to determine the output characteristic, the
setting of the output characteristic of the music data can be changed without stopping the
reproduction of the music data being reproduced, which is convenient.
[0071]
The present invention is not limited to the above embodiment, and various modifications are
possible within the scope of the invention.
[0072]
For example, in the above embodiment, as shown in FIG. 2 (A), the audio controller 2 sends the
user the boundaries 601, 602 between the wall 60 behind the wireless speaker 1 and the walls
61, 62 on both sides thereof. The first imaging data is acquired by imaging the wireless speaker
1 with both corners 701 and 702 of the angle of view 70.
However, the present invention is not limited to this.
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The first imaging data is obtained by causing the user to image the wireless speaker 1 with both
ends of the lateral width of the listening area where the user wants to enjoy music aligned with
the corners 701 and 702 of the angle of view 70. You may get it.
[0073]
Similarly, as shown in FIG. 2 (B), the audio controller 2 allows the user to connect the boundaries
631 and 601 of the wall 61 on the side of the wireless speaker 1 and the walls 63 and 60 on the
both sides The second imaging data is acquired by imaging the wireless speaker 1 in accordance
with the two corners 701 and 702. However, the present invention is not limited to this. The
second imaging data by causing the user to image the wireless speaker 1 with both ends of the
width in the depth direction of the listening area where the user wants to enjoy the music are
aligned with the corners 701 and 702 of the angle of view 70 You may get
[0074]
When there is no wall behind and / or at the side of the wireless speaker 1, the user inputs that
effect to the audio controller 2, and the use environment specifying unit 25 sets the use
environment of the wireless speaker 1 to, for example, an open space. It may be specified. If
output characteristics suitable for various types of open spaces, such as outdoors, are stored in
the output characteristic storage unit 26 in advance, the output characteristic determination unit
27 corresponds to the usage environment identified by the usage environment identification unit
25. The output characteristic that has been set can be specified from the output characteristic
storage unit 26.
[0075]
In the above embodiment, the size of the installation room of the wireless speaker 1 is
determined from the size of the room width and the room depth, but the boundaries between the
floor and the ceiling and the walls are the first and second imaging The size of the ceiling height
may be further specified by including it in any of the data, and the size of the installation room of
the wireless speaker 1 may be specified from the size of the room width, the room depth and the
ceiling height.
[0076]
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20
Further, in the above embodiment, either one of the first imaging data and the second imaging
data may be omitted.
In this case, the use environment of the wireless speaker 1 may be specified from single image
data, or the use environment of the wireless speaker 1 may be specified by receiving auxiliary
information from the user via the graphical user interface unit 21. May be In the former case, the
width or depth of the installation room of the wireless speaker 1 specified by the single imaging
data is the size of the installation room of the wireless speaker 1, and the size of the wireless
speaker 1 specified by the single imaging data. The position relative to the width or depth of the
installation room is the installation position of the wireless speaker 1. In the latter case, the
information to be specified from the omitted imaging data is accepted from the user.
[0077]
In addition, the audio controller 2 superimposes and displays the imaging data and the result of
the image recognition processing (the position of the label 100, the outline of the wireless
speaker 1) on the graphical user interface unit 21, and from the user, the position of the label
100, the wireless speaker 1 The correction of the outline of the image may be accepted. In
addition, the user may specify each wall boundary on the image of the installation room of the
wireless speaker 1 displayed on the graphical user interface unit 21.
[0078]
In the above embodiment, the audio controller 2 receives the ID of the output destination
wireless speaker 1 from the user via the graphical user interface unit 21. However, the present
invention is not limited to this. For example, a QR code (registered trademark) representing the
ID of the wireless speaker 1 is attached to the wireless speaker 1 as a label 100 unique to the
wireless speaker 1 or separately from the label 100. By capturing an image with a camera, the ID
of the wireless speaker 1 may be acquired. Alternatively, the audio controller 2 and the wireless
speaker 1 may be provided with a near field communication function such as RFID, and the
wireless speaker 1 may transmit the ID of its own wireless speaker 1 to the audio controller 2
using this near field communication. Good.
07-05-2019
21
[0079]
Further, in the above embodiment, the audio controller 2 transmits various instructions to each
of the wireless speakers 1-1 to 1-3 by multicast transmission. However, instead of multicast
transmission, for example, unicast transmission may be performed. Good.
[0080]
In the above embodiment, the audio controller 2 is connected to the network 5 via the wireless
network as an example. However, the audio controller 2 is directly connected to the network 5
without using the wireless network. It may be connected.
Also, the audio controller 2 may be directly wirelessly connected to the wireless speaker 1
without passing through the access point 4.
[0081]
Moreover, although the media server 3 is connected to the network 5 in the above embodiment,
the media server 3 may be connected to a wireless network. Also, the media server 3 may be
built in the audio controller 2. When the media server 3 is built in the audio controller 2, the
wireless speaker 1 acquires music data from the audio controller 2. Further, when the media
server 3 is built in any of the audio controllers 2, the other wireless speakers 1 acquire music
data from the audio controller 2 in which the media server 3 is built.
[0082]
Moreover, in the above embodiment, the audio controller 2 transmits an instruction to the
wireless speaker 1, but the present invention is not limited to this. It is sufficient to transmit an
instruction to a predetermined audio device having a function of reproducing music data.
[0083]
1, 1-1 to 1-3: wireless speaker, 2: audio controller, 3: media server, 4: access point, 5: network,
10: wireless network interface unit, 11: instruction receiving unit, 12: music data acquisition 13:
music data storage unit 14: music data reproduction unit 15: speaker unit 16: output
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22
characteristic setting unit 20: wireless network interface unit 21: graphical user interface unit
22: music list acquisition unit 23 : Reproduction instruction transmission unit 24: Imaging data
acquisition unit 25: Operating environment specification unit 26: Output characteristic storage
unit 27: Output characteristic determination unit 28: Output setting instruction transmission unit
100: Label
07-05-2019
23
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