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JP2010056599

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2010056599
A sound emission and collection device is provided that realizes various sound emission and
collection modes according to the situation required by a user. A rotation angle detection unit for
detecting a rotation angle of each hinge, a speaker position detection unit for detecting a speaker
position, and an input / output processing unit for switching a speaker function or a microphone
function . The input / output processing unit switches the speaker function or the microphone
function of each element according to the pivot angle of the hinge and the speaker position. For
example, when the speaker position is detected in the left direction (−X, Y direction) on the rear
of the device in the state of folding in two, the elements 50B to 50E in the right direction of the
inner peripheral surface are made to function as microphones Set to pick up the voice in the left
direction on the back of the device. [Selected figure] Figure 8
Sound emission device
[0001]
The present invention relates to a sound output system including a portable sound output unit,
and more particularly to a sound output system that realizes various sound output modes
according to the user's application and needs.
[0002]
Conventionally, in a speaker array provided with a plurality of speaker units, one has been
proposed which adds a delay to an audio signal supplied to each speaker unit to form directivity
(audio beam) in a predetermined direction (for example, Patent Document 1) See).
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1
[0003]
However, in order to form an audio beam in a wide frequency band, a large number of speaker
units are required, and there is a problem that the entire apparatus becomes large.
Then, what divides a speaker array into a plurality of sound units, connects each sound unit to a
management device, and forms an audio beam by performing delay control as a whole is
proposed (for example, refer to patent documents 2) .
According to the sound system of Patent Document 2, since the speaker array is divided into a
plurality of pieces, the entire apparatus can be miniaturized. JP 06-205496 JP JP 2006-262416
A
[0004]
However, the acoustic system of Patent Document 2 merely arranges the units in a straight line,
and can not realize various sound emission and sound collection modes. For example, when using
an acoustic system by one person, the user often places the device in front of himself, and it is
desirable that the sound emitting surface and the sound collecting surface be on the front of the
device. When used, it is desirable that a sound emitting surface and a sound collecting surface be
present all around the device since the user often surrounds the device periphery. However, in
the sound system of Patent Document 2, since the units are arranged in a straight line, the sound
emission surface is only one direction, and it is not possible to realize the sound emission in the
entire circumferential direction as described above. The
[0005]
Moreover, in the sound system of patent document 2, the user had to always exist in front of the
arranged unit, and the convenience was scarce.
[0006]
Then, this invention aims at providing the sound emission and collection apparatus which
implement | achieves various sound emission and collection modes according to the condition
which a user requires.
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[0007]
In the sound emission and collection device according to the present invention, a plurality of
sound collection and release elements are provided along the inner peripheral surface of the
through hole penetrating the flat plate-shaped casing.
Each of the sound emitting and receiving elements functions as a microphone when the collected
sound signal is output to the subsequent stage, and also functions as a speaker when the sound
signal is supplied.
The housing of the sound emission and collection device is divided into a plurality of individual
housings so that the shapes of the inner peripheral surfaces are substantially the same with the
center of the through hole viewed from the top and bottom surfaces as a reference point . In all
the connection parts except one connection part in the connection parts along the
circumferential direction of the plurality of individual housings, the rotation is performed so that
adjacent individual housings abut each other on the top surface or the bottom surface of each
other Movable hinges are provided respectively. Therefore, the aspect of each individual case
changes according to the rotation state of a hinge, and the arrangement pattern of the sound
emission and reception combining element installed on the inner peripheral surface of each
individual case changes.
[0008]
For example, when viewed from the top surface of the housing, the housing is divided into four
units at four locations on the front side, the back side, the right surface side, and the left surface
side, and the division is performed at two locations on the right surface side and the left surface
side Is provided with a top surface side hinge so that the mounted units are rotatably connected
in the top surface direction, and the divided units are rotatably connected in the bottom surface
direction at one point on the front side or the back side. To provide a bottom hinge. In this case,
when the two split units on the back side are turned through two top surface side hinges and the
case is folded in two, the sound output surface of the sound output unit also faces the back
direction. . In addition, if the left and right units are further rotated via the bottom side hinge and
the front direction of the case is the installation surface, the case is folded in four, and the sound
emitting surface of the sound emitting and receiving element is installed the device front In the
state of being a face, it is directed obliquely upward as the sound emission and collection device.
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In the two-folded state, the front (or back) direction of the device is the sound emitting surface,
so it is suitable when there are two users, and in the four-folded state it is released when the
device front is the installation surface Since the obliquely upward direction as the sound
collection device is the sound emission and collection surface, it is suitable when the number of
users is one. Here, in the sound emission and collection device of the present invention, a
rotation angle detection unit that detects a rotation angle of each hinge, a speaker position
detection unit that detects a speaker position, and input / output that switches a speaker function
or a microphone function And a processing unit. The input / output processing unit switches the
speaker function or the microphone function according to the pivot angle of the hinge and the
speaker position. For example, in the four-folded state, when the front of the device is the
installation surface, the sound emitting surface of the sound emitting / receiving element faces
obliquely upward as the sound emitting device, but when the speaker is on the right side Set the
right side sound emitting and receiving element to the microphone. This makes it possible to
clearly pick up the uttered voice.
[0009]
According to the present invention, the user needs to switch the speaker function or the
microphone function of the sound emitting and receiving element provided on the inner
peripheral surface according to the rotation angle of each hinge and the speaker position. In
accordance with the above, various sound emitting and collecting modes can be realized.
[0010]
Hereinafter, a sound emitting and collecting apparatus will be described as an embodiment
according to the present invention.
This sound emission and collection device performs various sound emission and collection
depending on the deformation of the housing.
[0011]
1, 2, 3 and 4 are views showing the appearance of the sound emission and collection device 1,
and FIG. 5 is a block diagram showing a configuration of the sound emission and collection
device 1. FIG. 1 is a view showing a flat placement mode, in which (A) is a plan view, (B) is a right
side view, and (C) is a bottom view, with the -Y direction in the figure as a front direction.
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[0012]
In the present embodiment, the case where the top surface and the bottom surface are
substantially circular is shown as an example, but the first symmetrical reference line Ls1 and
the orthogonal first symmetry reference line Ls1 formed parallel to these surfaces with the
centers of the top surface and the bottom as intersections. The inner circumferential surfaces of
the individual casings divided by the two axes of the second symmetrical reference line Ls2 may
have a shape that is line symmetrical with respect to the two axes. For example, the inner
circumferential shape may be represented by a side such as a square or a regular hexagon, or
may be represented by the outer periphery of an ellipse. Furthermore, the outer peripheral
surface of the housing may be any one having the above-described symmetry, such as a square, a
regular hexagon, or an ellipse.
[0013]
In FIG. 1, the sound emission and collection device 1 is formed of a casing of a cylindrical shape
(flat plate type annular body). The housing is a compact housing having a diameter of about 15
cm and a height of about 5 cm, and can be carried by the user.
[0014]
A plurality of elements 50A to 50L are provided on the cylindrical inner peripheral surface of the
housing. The elements 50A to 50L are sound emitting and collecting elements functioning as a
speaker or a microphone, and the sound emitting and collecting device 1 realizes a speaker array
by causing a plurality of elements to function as a speaker, and uses a plurality of elements as a
microphone. A microphone array is realized by making it function. In the state shown in FIG. 1,
the sound emitting and receiving surface of each element is directed to the center of the cylinder
when viewed from the top surface. Therefore, the sound emitting and receiving surface of the
array constituted by the plurality of elements is directed in the circumferential direction of the
sound emitting and collecting device.
[0015]
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5
The housing is divided linearly at four points in the front direction (−Y direction), the right
surface direction (X direction), the left surface direction (−X direction), and the back direction (Y
direction). Thereby, the housing is divided into four units of unit 11, unit 12, unit 13 and unit 14.
[0016]
A protrusion 121 is provided on the front right side of the unit 12, and a protrusion 131 is
provided on the front left side of the unit 13. The projecting portion 121 has a triangular prism
shape having an arc-shaped oblique side bent along the outer periphery of the unit 12 when
viewed from the top surface. The protruding portion 121 also protrudes in the Z direction, and
the height of the protruding portion in the Z direction corresponds to the stacking height of the
units 11 and 12 and the stacking height of the units 13 and 14. Similarly, the projecting portion
131 has a triangular prism shape having an oblique side bent along the outer periphery of the
unit 13 when viewed from the top surface. The protruding portion 131 also protrudes in the Z
direction, and the height of the protruding portion in the Z direction corresponds to the stacking
height of the units 11 and 12 and the stacking height of the units 13 and 14.
[0017]
The display unit 21 and the operation unit 22 are provided on the top surface of the protrusion
121, and the display unit 21 and the volume operation unit 23 are provided on the top surface of
the protrusion 131. The display unit 21 is composed of a plurality of LEDs, and by checking
whether these LEDs are turned on or off, it is possible to check whether the element functions as
a speaker or functions as a microphone. The user operates the operation unit 22 to switch the
speaker function or the microphone function of each element, or operates the volume operation
unit 23 to control the volume.
[0018]
The top surface side of the unit 11 and the unit 12 is connected by a hinge 51, and the top
surface side of the unit 13 and the unit 14 is connected by a hinge 53. Further, the bottom sides
of the unit 12 and the unit 13 are connected by a hinge 52.
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[0019]
The unit 11 and the unit 12 can be pivoted in the top direction through the hinge 51. When the
unit 11 is pivoted 180 degrees with respect to the unit 12, the top side of the unit 11 is the top
of the unit 12. Contact with the surface side. Similarly, the unit 14 and the unit 13 can be pivoted
in the top direction through the hinge 53. When the unit 14 is pivoted on the basis of the unit
13, the top side of the unit 14 corresponds to the unit 13 Contact with the top side.
[0020]
Thereby, the housing is deformed into a semi-cylindrical housing (folded form) as shown in FIG.
FIG. 2 is a view showing a double-folded form, where the -Y direction in the figure is a front
direction, (A) is a plan view, (B) is a right side view (C) is a rear view, and (D) is a front view FIG.
[0021]
As described above, the protrusion 121 and the protrusion 131 respectively protrude in the Z
direction, and the length in the Z direction corresponds to the stacking height of the units 11 and
12 and the stacking height of the units 13 and 14. When the unit 11 and the unit 14 are turned,
the top surface of the sound emission and collection device 1 becomes flush, and there is no
protrusion on the external appearance, and the user can easily carry it. In the two-folded mode,
the elements 50A to 50L are arranged in a semicircular shape and arranged in two stages in the
height direction.
[0022]
The units 12 and 13 are pivotable in the direction of the bottom through the hinges 52. When
the units 12 and 13 are pivoted in the direction of the bottom, the bottom sides of the units 12
and 13 contact each other, as shown in FIG. It becomes a four fold mode shown. FIG. 3 is a view
showing a four-folded form, where the -Y direction in the figure is a front direction, (A) is a plan
view, (B) is a right side view, (C) is a left side view, (D) These are external appearance perspective
views in the state which made the front the installation surface.
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[0023]
In the four-folded mode shown in FIG. 3, the obliquely upper surface 125 as the sound emission
and collection device 1 in the installed state is formed by the inner peripheral surfaces of the
units 11 to 14. Since the units 11 to 14 are arranged in the direction perpendicular to the
arrangement direction of the respective elements, the elements 50A to 50L are arranged in a 3row by 4-column pattern on the obliquely upper surface 125. Since the protrusion 121 and the
protrusion 131 protrude in the Z direction (the protrusion 131 protrudes in the -Z direction in
the state of FIG. 3), the display unit 21, the operation unit 22, and the volume operation unit 23
are collected. It is exposed to the side of the sound surface, and the user can easily confirm the
display unit 21 and operate the operation unit 22. Further, as described above, since the
protruding height of the protruding portion 121 and the protruding portion 131 in the Z
direction corresponds to the stacked height of the units 11 and 12 and the stacked height of the
units 13 and 14, the front and back of the housing Will be flush, and it will be clearer in
appearance, making it easier for the user to carry.
[0024]
In addition, as shown in FIG. 4, when the unit 12 and the unit 13 are rotated at a rotation angle
of about 90 degrees without contact, the sound emitting and collecting surfaces of the respective
elements are in the state where the device front is the installation surface. The right and left
direction as the sound emission and collection device 1 is directed upward. In this state, in the
right side unit constituted by the unit 11 and the unit 12, and the left side unit constituted by the
unit 13 and the unit 14, the respective sound emitting and collecting surfaces face in different
directions (to intersect).
[0025]
As described above, the sound emission and collection device 1 having the above-described
structure can deform the housing into various shapes. Here, the sound emission and collection
device 1 according to the present invention detects the position of the speaker by the
microphone array, and switches the speaker function or the microphone function according to
the case shape and the position of the speaker at that time. Various sound emission and
collection modes are realized.
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[0026]
The detailed configuration and operation of the sound emission and collection device 1 will be
described below. FIG. 5A is a block diagram showing the configuration of the sound emission and
collection device 1. 5A, in addition to the elements 50A to 50L, the display unit 21, the operation
unit 22, and the volume operation unit 23, the sound emission and collection device 1 includes
input / output processing units 61A to 61L and amplifiers (AMPs) 62A to 62A. 62L, A / D
converter (A / D) 63A to 63L, microphone signal processing unit 64, input / output I / F 65,
speaker signal processing unit 66, D / A converter (D / A) 67A to 67L, AMP 68A to 68L, A
control unit 69 and a sensor 70 are provided.
[0027]
The elements 50A to 50L are elements that function as a speaker or a microphone as described
above, and are realized by a general dynamic speaker including a diaphragm and a voice coil. The
input / output processing units 61A to 61L perform switching of the functions of the speaker
and the microphone. The input / output processing units 61A to 61L function as microphones
when the audio signals input from the elements 50A to 50L are supplied to the amplifiers 62A to
62L in the subsequent stage, and the audio signals output from the amplifiers 68A to 68L are
converted to the elements 50A to 50L. When supplied, it functions as a speaker. Switching of
signal supply in the input / output processing units 61A to 61L is controlled by the control unit
69.
[0028]
In addition, the function as a speaker and a microphone can also be implement | achieved
simultaneously. FIG. 5B shows the configuration of the input / output processing unit in the case
where the functions as a speaker and a microphone are simultaneously realized. Although only
the input / output processing unit 61A is shown, the other input / output processing units have
the same configuration. As shown in FIG. 6B, the input / output processing unit 61A supplies the
audio signal input from the element 50A to the amplifier 62A in the subsequent stage, and
supplies the audio signal output from the amplifier 68A to the element 50A. That is, the terminal
611A on the element side is connected to the terminal 612A on the amplifier 62A side, and the
terminal 613A on the amplifier 68A side is connected to the terminal 611A on the element side.
When the connection between the terminal 611A and the terminal 612A is released, it can
09-05-2019
9
function only as a speaker, and when the connection between the terminal 611A and the
terminal 613A is released, it functions only as a microphone.
[0029]
The control unit 69 controls the input / output processing units 61A to 61L, the microphone
signal processing unit 64, the input / output I / F 65, the speaker signal processing unit 66, and
the display unit 21. Further, in accordance with the user's operation mode (operation signal)
input from the operation unit 22 and the volume operation unit 23, an instruction to switch the
speaker function or the microphone function, volume control, and the like are performed.
[0030]
Further, the control unit 69 instructs switching of the speaker function or the microphone
function of the input / output processing units 61A to 61L according to the output signal of the
sensor 70 and the position of the speaker detected by the microphone signal processing unit 64.
The sensor 70 detects the rotation angles of the hinge 51, the hinge 52, and the hinge 53, and
inputs detection signals corresponding to the detected rotation angles of the hinges to the
control unit 69. The control unit 69 determines the sound emitting surface of each element
based on the detection signal input from the sensor 70. Also, it receives speaker position
information described later from the microphone signal processing unit 64, and determines the
position of the speaker. The control unit 69 switches the speaker function or the microphone
function according to the sound emitting and receiving surface of each element and the position
of the speaker.
[0031]
For example, as shown in FIGS. 8C and 8D, the pivoting angle of the hinges 51 and 53 is 180
degrees (two-folded form), and the speaker is on the left side in the back of the device (-X, Y
direction) And the elements 50A, 50C, 50D and 50E function as microphones and the elements
50A, 50F, 50G, 50H, 50I, 50J, 50K and 50L as speakers.
[0032]
First, in the operation of the sound emission and collection device 1, the flow of audio signals in
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the case where each element functions as a microphone, and the speaker position detection will
be described.
The audio signals output from the elements 50A to 50L are amplified by the amplifiers 62A to
62L through the input / output processing units 61A to 61L. The amplified audio signals are
converted into digital audio signals by A / D converters 63A to 63L, and are input to the
microphone signal processing unit 64.
[0033]
The microphone signal processing unit 64 performs delay processing on the audio signals input
from the A / D converters 63A to 63L, combines them, and outputs the result as a collected
sound beam signal to the input / output I / F 65. By delaying and combining the sound signals
picked up by each element, strong directivity (sound collection beam) can be formed in a
predetermined direction. The direction (the amount of delay of each audio signal) for forming the
sound collection beam is set by the control unit 69. The sound collection beam can also be set in
multiple directions simultaneously. When sound collection beams are set in a plurality of
directions at the same time, the audio signals input from the A / D converters 63A to 63L may be
branched, subjected to delay processing, and then synthesized.
[0034]
The microphone signal processing unit 64 can detect the speaker position (azimuth) by
simultaneously setting the sound collection beams in a plurality of directions. Speaker position
detection will be described with reference to FIG. As shown in FIG. 6 (A), when the unit 11 and
the unit 14 are rotated 180 degrees to deform the casing into a semi-cylindrical shape (folded
form), the elements provided on the inner circumferential surface of the cylinder The sound
emitting and receiving surface is directed to the rear side of the device (Y direction). At this time,
the control unit 69 instructs the microphone signal processing unit 64 to set the sound collection
beam in a plurality of directions on the back of the device. That is, as shown in FIG. 6A, a region
101 in the right side (X, Y direction) of the rear of the device, a region 102 in the right side
(between the Y direction and the X, Y directions) of the rear of the device, the rear of the device
In the direction (Y direction), the rear of the device slightly left (between Y and −X, Y) region
104, and the rear 105 in the rear of the device (−X, Y). Set the sound beam. The microphone
signal processing unit 64 compares the levels of the respective sound collection beams, and
assumes that the speaker is present in the area where the sound collection beam having the
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highest level is collected, and detects this area as the speaker position. For example, in the
example of FIG. 6A, since the sound collection beam in the area 104 has the highest level, the
area 104 is detected as the speaker position. The microphone signal processing unit 64 outputs
the sound collection beam with the highest level to the input / output I / F 65 in the subsequent
stage, and transmits information indicating the speaker position to the control unit 69. The input
/ output I / F 65 has a USB terminal, a network terminal, an audio input terminal, an audio
output terminal, and the like, and outputs an audio signal to another device or inputs an audio
signal from another device. The control unit 69 instructs which terminal to use.
[0035]
Further, as shown in FIG. 6B, when the unit 12 and the unit 13 are rotated and the front direction
of the device is the installation surface (quadruple form), the control unit 69 is in the device left
surface direction (−X direction) A region 201, a region 202 in a slightly back direction (between
−X direction and −X, Y direction) of the left side of the device, a region 203 in a left direction
(−X, Y direction) in the back of the device, a little left direction (Y The sound collection beams
are set in five directions of the region 204 between the direction and the -X, Y directions) and the
region 205 in the back direction (Y direction) of the apparatus. In this case, since the front of the
sound emission and collection device 1 is the installation surface, the speaker position in the
vertical direction can be detected. Of course, in the state shown in FIG. 6B, since the microphone
array can be configured in the left and right direction (Z and -Z directions) (see FIG. 3C), the
speaker position in the left and right direction is also detected. can do.
[0036]
Next, the flow of the audio signal will be described for the case where each element functions as
a speaker. The input / output I / F 65 inputs an audio signal input from another device to the
speaker signal processing unit 66.
[0037]
The speaker signal processing unit 66 branches the audio signal input from the input / output I /
F 65, performs delay processing, and outputs the delayed signal to the D / A converters 67A to
67L. By delaying the sound signal for sound emission supplied to each element, strong directivity
(sound emission beam) can be formed in a predetermined direction. Also, a plurality of sound
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emission beams can be formed at the same time, and a sound emission beam can also be formed
for each channel of the audio signal.
[0038]
The audio signals delayed and output by the speaker signal processing unit 66 are converted to
analog audio signals by the D / A converters 67A to 67L, respectively, amplified by the amplifiers
68A to 68L, and then input / output processing units 61A to 61L. Are supplied to the elements
50A to 50L.
[0039]
Thus, the elements 50A to 50L function as a speaker or a microphone to constitute a speaker
array and a microphone array.
[0040]
Next, specific sound emission and sound collection modes of the sound emission and collection
device will be described.
FIG. 7 is a view showing an example of usage of the sound emission and collection device 1. As
shown in FIG.
FIG. 7 (A) is a view showing a flat placement mode, FIG. 7 (B) is a view showing a two-fold aspect,
and FIG. 7 (C) is a view showing a four-fold aspect.
[0041]
As shown in FIG. 7A, when the unit 11, the unit 12, the unit 13 and the unit 14 do not rotate (flat
placement mode), the sound emitting surfaces of all the elements provided on the inner
circumferential surface of the cylinder are all It faces in the circumferential direction. In this case,
the control unit 69 causes part of each element to function as a speaker and the other part as a
microphone. For example, the elements 50B, 50E, 50H, and 50K at the center of each unit
function as microphones, and the remaining elements function as speakers. That is, when a signal
indicating that the pivot angle of hinges 51, 52 and 53 is 0 degree is input from sensor 70,
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control unit 69 controls input / output processing units 61B, 60E, 60H and 60K as elements.
Audio signals input from 50B, 50E, 50H, and 50K are set to be supplied to the amplifiers 62A to
62L in the subsequent stage. Further, audio signals input from the remaining amplifiers 68A to
68L are set to be supplied to the elements 50A, 50C, 50D, 50F, 50G, 50I, 50J, and 50L. In this
example, since sound is emitted all around the device and sound is collected all around the
device, it is suitable for use by a plurality of people so as to surround the sound emission and
collection device 1.
[0042]
Next, as shown in FIG. 6B, when the unit 11 and the unit 14 are rotated 180 degrees to deform
the case into a semi-cylindrical shape (half-folded form), they are provided on the inner
circumferential surface of the cylinder The sound emitting and receiving surface of each element
faces the back of the device. In this case, a signal indicating that the pivot angles of the hinges 51
and 53 are 180 degrees is input from the sensor 70 to the control unit 69. Also in this case, the
control unit 69 causes part of each element to function as a speaker and the other part as a
microphone. Thus, the sound emission and collection device 1 emits sound to the rear of the
device and collects sound from the rear surface of the device. Therefore, the sound emission and
collection device 1 is suitable for use by a plurality of people (two people) on the back of the
sound emission and collection device 1 It becomes.
[0043]
Next, as shown in FIG. 6C, when the unit 12 and the unit 13 are pivoted and the front direction of
the apparatus is the installation surface (quadruple form), discharge of each element provided on
the inner peripheral surface of the cylinder The sound surface is directed to the left back (-X, Y
direction). That is, when the front of the device is installed, the sound emission surface is directed
obliquely upward as the sound emission and collection device. In this case, a signal indicating
that the pivot angles of the hinges 51, 52, and 53 are 180 degrees is input from the sensor 70 to
the control unit 69. Also in this case, the control unit 69 causes part of each element to function
as a speaker and the other part as a microphone. In this case, since the element 50A is directed
upward, the element 50B is directed obliquely upward, and the element 50C is directed in the
lateral direction, it is easy to pick up the sound at a position where these directions intersect
(short distance of the device). Therefore, noise in the other direction is not picked up. Therefore,
it becomes suitable when using by one person in the apparatus front.
09-05-2019
14
[0044]
Further, the sound emission and collection device of the present embodiment performs the
following operation by detecting the position of the speaker and switching the speaker function
or the microphone function of each element.
[0045]
FIG. 8 is a view showing an example of a sound emitting and collecting mode according to the
speaker position detection.
FIGS. 8A and 8C are views of the sound emission and collection device as viewed from the back,
and FIGS. 8B and 8D are views of the sound emission and collection device as viewed from the
top. In this example, the case where the unit 11 and the unit 14 are rotated 180 degrees and the
case is deformed into a semi-cylindrical shape (two-folded form) is shown. The information which
shows that the rotation angle of is 180 degrees is input.
[0046]
As shown in FIGS. 6A and 6B, the control unit 69 instructs the input / output processing units
61A to 61L to simultaneously realize the functions as a speaker and a microphone for all
elements. Then, when information indicating the speaker position is received from the
microphone signal processing unit 64, the control unit 69 causes the element at a predetermined
position to function as a microphone so as to pick up the voice at that position, and the
remaining elements are used as speakers. Make it work. That is, as shown in the same figure (C)
and the same figure (D), the elements 50B, 50C, 50D, 50E which are elements on the right side
(X direction side) of the inner peripheral surface are made to function as a microphone and the
remaining elements 50A. , 50G, 50H, 50I, 50J, 50K, 50L function as speakers. Thereby, the
sound collection surface of the sound emission and collection device 1 is directed to the device
back left direction (-X, Y direction) which is the sound collection surface of the elements 50B,
50C, 50D, and 50E, and sounds in other directions are collected. It is possible to pick up the
speech clearly without having to
[0047]
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Next, FIG. 9 is a view showing another example of the sound emitting and collecting mode
according to the speaker position detection. FIG. 9A and FIG. 9C are left side views in a state in
which the front is an installation surface, and FIG. 9B and FIG. 9D are plan views. In this example,
the unit 11 and the unit 14 are rotated 180 degrees, and further, the unit 12 and the unit 13 are
rotated so that the front surface direction of the device is the installation surface (four fold
mode). In this case, the sound emitting and receiving surface of each element provided on the
inner circumferential surface of the cylinder faces in the left direction (−X, Y direction) of the
rear of the device. In this case, the control unit 69 receives, from the sensor 70, information
indicating that the pivot angles of the hinges 51, 52 and 53 are 180 degrees.
[0048]
As shown in FIGS. 6A and 6B, the control unit 69 instructs the input / output processing units
61A to 61L to simultaneously realize the functions as a speaker and a microphone for all
elements. Then, when information indicating the speaker position is received from the
microphone signal processing unit 64, the control unit 69 causes the element at the
predetermined position to function as a microphone so as to pick up the sound at that position.
That is, as shown in FIGS. 7C and 7D, the elements 50E and 50H, which are central elements of
the inner peripheral surface, function as microphones, and the remaining elements function as
speakers. As a result, the sound collection surface of the sound emission and collection device 1
is directed to the device left rear direction (the front of the device as the installation surface and
obliquely above the sound emission and collection device) which is the sound collection surface
of the elements 50E and H. The voiced speech can be picked up clearly without picking up the
voice.
[0049]
As described above, the sound emission and collection device of the present embodiment
switches the speaker function or the microphone function of each element according to the
deformation mode of the case and the speaker position according to the situation required by the
user. Various sound emission and collection modes can be realized.
[0050]
The sound emission and collection mode of the sound emission and collection device of the
present invention is not limited to the above example.
09-05-2019
16
Even in the other sound emission mode and sound collection mode, when the speaker function or
the microphone function of each element is switched depending on the deformation mode of the
housing and the speaker position, it is within the technical scope of the present invention.
[0051]
It is a figure showing the appearance of a sound emission and collection device. It is a figure
showing the appearance of a sound emission and collection device. It is a figure showing the
appearance of a sound emission and collection device. It is a figure showing the appearance of a
sound emission and collection device. It is a block diagram showing composition of a sound
emission and collection device. It is a figure which shows the concept of a speaker position
(orientation) detection. It is a figure which shows an example of the usage condition of a sound
emission and collection apparatus. It is a figure which shows an example of the sound emission
and reception aspect according to the speaker position detection. It is a figure which shows the
other example of the sound emission and reception aspect according to the speaker position
detection.
Explanation of sign
[0052]
1-Sound collection device
09-05-2019
17
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