JP2010074452A - Sound emitting and collecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound emitting and collecting apparatus capable of flexibly coping with difference of the number and arrangement of users or the like even when the number and arrangement of the users or the like are different. <P>SOLUTION: In the sound emitting and collecting apparatus 1, housings 11, 13, 15, 17 are arranged in order so as to form a cylinder, and a plurality of sound emitting and collecting elements 33 are installed in its inner peripheral surface. The housing 11 and the housing 13 are connected to each other by a movable part 22, the housing 13 and the housing 15 are connected to each other by a movable part 26, and the housing 15 and the housing 17 are connected to each other by a movable part 30, respectively, and since each housing rotates in two directions by the movable part, a user can deform the sound emitting and collecting apparatus 1 in the desired shape. In addition, the sound emitting and collecting apparatus 1 detects rotation states of the movable parts 22, 26, 30 by rotation detection parts 53, 55, and functions each of the plurality of sound emitting and collecting elements 33 as speakers or microphones according to the rotation states. Thus, the plurality of sound emitting and collecting elements are functioned as the speakers or microphones according to their use states to efficiently perform sound emission and sound collection by one sound emitting and collecting apparatus by deforming the sound emitting and collecting apparatus according to a use condition and the number of users of the sound emitting and collecting apparatus 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sound emission and collection device that emits and collects sound and can be deformed according to the number and arrangement of users.

Conventionally, an acoustic unit including a speaker array and a microphone array can be operated alone, or a plurality of acoustic units can be connected to operate as a single unit.
JP 2006-262416 A

  When connecting a plurality of acoustic units described in Patent Document 1 to operate as a single unit, each acoustic unit can be arranged according to the use situation after the connection.

  However, since the housing shape of the acoustic unit is constant, only the placement according to the housing shape is possible, and depending on the number of users and the placement, the acoustic units may not be placed well. In addition, there is a voice of a user who desires an acoustic unit that can collect and emit sound according to the number and arrangement of users with only one acoustic unit.

  Therefore, an object of the present invention is to provide a sound emission and collection device that can flexibly cope with the number of users, arrangement, and the like.

  The present invention has the following configuration as means for solving the above problems.

(1) a plurality of cases in which both end surfaces are arranged in an annular shape so as to contact or face each other;
When the plurality of housings are arranged in a ring shape, a plurality of sound emitting and collecting means that are installed on the inner periphery of the ring and can switch operation as a speaker or a microphone;
Among the plurality of casings, a plurality of casings that are pivotally connected to adjacent casings with a vertical axis as a center on an end face of each casing other than the end faces facing or facing a pair of casings. Movable means;
A rotation detection means for detecting a rotation state of the plurality of movable means;
Sound emission / collection sound setting means for causing each of a plurality of sound emission / collection means installed in each housing to function as a speaker or a microphone according to the rotation state of each movable means detected by the rotation detection means;
With
At least one of the plurality of movable means is further connected to be rotatable about an axis parallel to the end face.

  In this configuration, the sound emitting and collecting apparatus has a plurality of casings arranged in a ring shape. At this time, both end surfaces of each housing are in contact with or opposed to end surfaces of other housings. Each housing is provided with a plurality of sound emitting and collecting means on the inner periphery of the ring in a state of being arranged in a ring shape. Further, each casing is connected to be movable by a movable means except for a contact face or a facing end face of a set of the casings, and the movable means detected by the rotation detecting means are in a rotational state. Accordingly, each of the plurality of sound emitting and collecting means provided on the inner peripheral surface of each housing is caused to function as a speaker or a microphone. Therefore, by setting the functions of a plurality of sound emission and collection means in advance according to the rotation state of each rotation means, by modifying the sound emission and collection device according to the usage status and the number of users of the sound emission and collection device, Sound emission and sound collection can be performed efficiently with one sound emission and collection device.

  (2) Of the plurality of movable means, two movable means through which the center line of the ring passes are further connected to be rotatable about an axis parallel to the center line.

  In this configuration, a plurality of casings arranged in an annular shape can be folded in half along an axis parallel to the center line. Therefore, the deformation pattern of the sound emission and collection device can be further increased, and the device can be modified according to the use state of the device and the number of users.

  According to the present invention, since the housing can be changed into various shapes, by providing one sound emitting and collecting device, it is possible to provide a sound emitting and collecting environment suitable for the place regardless of the number or arrangement of users. it can.

  First, the external appearance of the sound emission and collection device according to the first embodiment of the present invention will be described. FIG. 1 is a six-view diagram, an AA arrow diagram, and a BB arrow diagram of a sound emission and collection device according to an embodiment of the present invention. In FIG. 1, the basic type of the sound emission and collection device 1 is shown.

  Here, in the following description, an example in which four housings are arranged in a ring shape will be described, but the present invention is not limited to this example and may take other forms. That is, the number of housings is not limited as long as a plurality of housings are arranged in a ring shape.

  As shown in FIG. 1, the sound emission and collection device 1 includes a casing (first casing) 11 having a shape obtained by dividing a cylinder having a predetermined thickness and height into four (in four equal parts) in the radial direction. 2 housing) 13, housing (third housing) 15, and housing (fourth housing) 17.

  When the sound emitting and collecting apparatus 1 is used as a basic type without being deformed, it is placed on a table or the like with the surface shown in the front view facing up. Therefore, in the following description, the surface of the sound emission and collection device 1 shown in the front view of FIG. 1 is the upper surface, the surface of the sound emission and collection device 1 shown in the rear view is the lower surface, and the emission and collection devices shown in the plan view, the bottom view, and the left and right side views. The surface of the sound collecting device 1 is referred to as an outer peripheral surface, and the surface provided with the sound emitting and collecting elements of the sound emitting and collecting device 1 shown in the AA arrow view and the BB arrow view is referred to as an inner peripheral surface. Moreover, in each housing | casing 11,13,15,17, one of the surfaces (end surface) equivalent to the division | segmentation surface of a cylinder is called a left side, and the other is called a right side. Here, in the following description, the casings 11, 13, 15, and 17 are also expressed as the respective casings 11 to 17.

  Each surface of the housing 11 is referred to as an upper surface 11U, a lower surface 11D, an outer peripheral surface 11T, an inner peripheral surface 11N, a left side surface 11L, and a right side surface 11R, respectively. In addition, the surfaces of the housing 13, the housing 15, and the housing 17 are also referred to by the same reference numerals.

  When the sound emission and collection device 1 is a basic type, the casing 11, the casing 13, the casing 15, and the casing 17 are arranged so as to form a cylinder in this order. In other words, both side surfaces (both end surfaces) 11R and 13L, 13R and 15L, 15R and 17L, and 17R and 11L of each housing are disposed so as to contact each other.

  Each of the housing 13 and the housing 15 has a shape in which triangular prism-like housings 13D and 15C are joined to the outer peripheral surface side, and operation portions 19A and 19B are provided on the upper surfaces thereof. The triangular prism-shaped casings 13D and 15C are not necessarily provided. When these are not provided, for example, the operation units 19A and 19B may be provided on the upper surface 15U of the casing 15.

  In the sound emission and collection device 1, each of the casings 11 to 17 except for the space between the pair of casings 11 and the side surfaces (end faces) of the casings 17 can be rotated with respect to the adjacent casings. A biaxial movable part is provided between the side surfaces (end surfaces) of the housing. That is, between the housing 11 and the housing 13, between the housing 13 and the housing 15, and between the housing 15 and the housing 17, a biaxial movable portion (first movable means, second movable means, Third moving means).

  Moreover, in order to provide the biaxial movable part (hinge) as described above, the housing 13 and the housing 15 are further divided. That is, the casing 13 is divided into a casing 13A, a casing 13B, and a casing 13C. The housing 15 is divided into a housing 15A and a housing 15B.

  The housing 13A and the housing 13B are connected to be rotatable (rotatable) by a rotating shaft 23 provided in a direction perpendicular to both the left side surface 13L of the housing 13 and the right side surface 11R of the housing 11. Has been. The housing 13B and the housing 13C can be rotated (rotatably) by a rotation shaft 25 provided in a vertical direction with respect to the right side surface 13R of the housing 13 and the left side surface 15L of the housing 15. It is connected to the. The casing 15A and the casing 15B can be rotated (rotatably) by a rotation shaft 29 provided in a vertical direction with respect to the right side surface 15R of the casing 15 and the left side surface 17L of the casing 17. It is connected to the.

  Further, the casing 11 and the casing 13 (13A) are in a cylindrical radial direction between the lower surfaces 11D and 13D, and parallel to both side surfaces (both end faces) 11R and 13L of the casing 11 and the casing 13 It is connected by a rotation shaft 21 provided in the frame so as to be rotatable (rotatable). The casing 13 (13C) and the casing 15 (15A) are arranged on both sides of the casing 13 and the casing 15 in a direction perpendicular to the upper surface 13U (15U) and the lower surface 13D (15D) between the outer peripheral surfaces 13T and 15T. It is connected rotatably (rotatably) by a rotation shaft 27 provided in a direction parallel to the surfaces (both end surfaces) 13R and 15L. The casing 15 (15B) and the casing 17 are provided between the upper surfaces 15U and 17U in a radial direction of the cylinder and in a direction parallel to both side surfaces (both end surfaces) 15R and 17L of the casing 15 and the casing 17. The rotation shaft 31 is connected to be rotatable (rotatable). The housing 11 and the housing 17 are not connected. Each housing 11 to 17 can be rotated from a state where the right side surface and the left side surface face each other (0 degree state) to 180 degrees (predetermined value) with the rotation axes 21, 27, 31 as the central axis. is there.

  The rotation shaft 21 and the rotation shaft 23 that rotate the housing 11 with respect to the housing 13 are referred to as a movable portion 22 (first movable means). Further, the rotation shaft 25 and the rotation shaft 27 that rotate the housing 13 with respect to the housing 15 are referred to as a movable portion 26 (second movable means). Further, the rotation shaft 29 and the rotation shaft 31 that rotate the housing 17 with respect to the housing 15 are referred to as a movable portion 30 (third movable means).

  In the sound emission and collection device 1, the rotation shafts 21, 23, 25, 27, 29, and 31 are provided with stoppers (not shown) in order to hold the respective housings 11 to 17 rotated at arbitrary angles. Mechanism). Therefore, when deforming and using the sound emitting and collecting apparatus 1, the user can rotate the housings 11 to 17 and stop them at an arbitrary angle.

  As shown in the AA arrow view and the BB arrow view of FIG. 1, each of the casings 11 to 17 has an inner peripheral surface (surface facing the inside of the cylinder) 11N, 13N, 15N, and 17N. A plurality of sound emitting and collecting elements 33 are installed. As an example, FIG. 1 shows a case where three housings 11, 15, and 17 are provided with three sound emitting and collecting elements 33 and two housings 13 are provided. . That is, sound emitting and collecting elements 33-1 to 33-3 are provided in the casing 11, sound emitting and collecting elements 33-4 to 33-5 are provided in the casing 13, and sound emitting and collecting elements 33-6 are provided in the casing 15. To 33-8, and the housing 17 is provided with sound emitting and collecting elements 33-9 to 33-11, respectively.

  The number of sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the respective housings 11 to 17 is not limited to this, and may be a number according to the area of the inner peripheral surface, the size and arrangement of the sound emitting and collecting elements 33. The number of sound emitting and collecting elements 33 provided in each housing may be the same or different. For example, in another example of the AA arrow view of FIG. 1, six sound emitting and collecting elements 33 are provided in each of the casing 11, the casing 15, and the casing 17, and the sound emitting and collecting elements 33 are provided in the casing 13. The case where four are provided is shown. In addition, the plurality of sound emitting and collecting elements 33 can be arbitrarily arranged in a lattice shape, a honeycomb shape, or the like.

  The sound emitting and collecting element 33 (33-1 to 33-11) is a known element (sound emitting and collecting means) that can function as a speaker (sound emitting means) or a microphone (sound collecting means). is there. In the sound emission and collection device 1, the rotation detection unit 53 (in a state where the casings are twisted) according to the operation of the operation unit 19 (19 </ b> A / 19 </ b> B) or the rotation state of each of the rotation shafts 21, 27, 31. 53A, 53B, and 53C), and the rotation state of each rotation shaft 23, 25, and 29 (the state in which the casing is opened) is detected by the rotation detection unit 55 (55A, 55B, and 55C). Thus, each sound emitting and collecting element 33 can function as a speaker or a microphone, or the function of each sound emitting and collecting element 33 can be switched.

  As described above, the sound emission and collection device 1 includes a signal processing circuit in each of the casings 11 to 17 in order to switch the function of each sound emission and collection element 33 or process an audio signal. . A cable 35 for connecting the signal processing circuit and the personal computer P and exchanging signals extends from the outer peripheral surface 15T of the housing 15. Further, a USB terminal (not shown) is attached to the tip of the cable as an example.

  FIG. 2 is a block diagram showing a schematic configuration of a signal processing circuit of the sound emission and collection device. As shown in FIG. 2, the sound emission and collection device 1 includes a signal input / output unit 41, a sound emission processing unit 43, a switching unit 45 (45-1 to 45-11), and a sound emission and collection element 33 (33-1 to 33). -11), sound collection processing unit 47, echo cancellation unit 49, operation unit 19 (19A / 19B), rotation detection unit 53 (53A / 53B / 53C), rotation detection unit 55 (55A / 55B / 55C), And a control unit (release / collection sound setting means) 57.

  The signal input / output unit 41 is an interface for connecting to a recording / playback apparatus for inputting / outputting an audio signal or a device such as a personal computer.

  The sound emission processing unit 43 performs delay processing, amplification processing, and the like on the sound emission sound signal input from the signal input / output unit 41, and performs the sound emission and collection elements 33-1 to 33-11. The processed sound output sound signal is output to the switching unit 45.

  Whether the switching unit 45 (45-1 to 45-11) causes the sound emitting and collecting elements 33-1 to 33-11 to function as a speaker according to the control signal (the sound emitting and collecting instruction signal) output from the control unit 57. Switch between functioning as a microphone.

  The sound emitting and collecting elements 33-1 to 33-11 are elements that can selectively function as speakers or microphones. The sound emission and collection elements 33-1 to 33-11 are connected to the sound emission processing unit 43 and the sound collection processing unit 47 via the switching units 45 (45-1 to 45-11), respectively. When each sound emitting and collecting element 33-1 to 33-11 functions as a speaker, the sound emitting and collecting elements 33-1 to 33-11 emit sound based on a sound emitting sound signal output from the sound emitting processing unit 43 via the switching unit 45. Further, when each sound emitting and collecting element 33-1 to 33-11 functions as a microphone, it collects ambient sounds and generates a collected sound signal, and outputs it to the sound collecting processing unit 47 via the switching unit 45. To do.

  The sound collection processing unit 47 performs delay processing, amplification processing, and the like on the sound collection signals output by the sound emission and collection elements 33-1 to 33-11, and outputs them to the echo cancellation unit 49.

  The echo cancellation unit 49 includes an adaptive filter, generates a pseudo-regression sound signal based on the sound output sound signal, and performs a difference operation on the sound collection beam signal from the sound collection processing unit 47, thereby performing an echo. Cancel. The echo cancellation unit 49 outputs the collected sound signal after the echo cancellation to the signal input / output unit 41.

The operation unit 19 receives a user operation input and outputs the operation input content to the control unit 57. For example, the operation unit 19 outputs, to the control unit 57, a function instruction signal that sets whether each sound emitting and collecting element 33 of the housings 11 to 17 functions as a speaker or a microphone according to the received operation. To do. Further, the user operates the operation unit 19.
It is also possible to set the automatic setting mode. In the automatic setting mode, the sound emitting and collecting elements 33-1 to 3-3 are in accordance with the rotation states (angles) of the rotation shafts 21, 27, and 31 and the rotation states (angles) of the rotation shafts 23, 25, and 29. This is a mode in which 33-11 is automatically functioned as a speaker or a microphone.

It is also possible to set the automatic setting mode.

  The rotation detection unit 53 (53A, 53B, 53C) detects the rotation state (angle) of each rotation shaft 21, 27, and 31 and outputs a signal corresponding to the state (angle) to the control unit 57. .

  The rotation detection unit 55 (55A, 55B, 55C) detects the rotation state (angle) of each rotation shaft 23, 25, and 29 and outputs a signal corresponding to the state (angle) to the control unit 57. .

  The control unit 57 outputs a switching signal to the switching unit 45 (45-1 to 45-11) according to the signals output from the operation unit 19, the rotation detection unit 53, and the rotation detection unit 55, and emits and collects sound. The elements 33-1 to 33-11 are caused to function as a speaker or a microphone. The control unit 57 controls each unit of the sound emission and collection device 1.

  Next, a method for using the sound emission and collection device 1 will be described. The sound emission and collection device 1 can be used as a microphone / speaker for telephone or remote conference. Further, the sound emitting and collecting apparatus 1 can cause all the sound emitting and collecting elements 33 to function only as microphones, or can cause all the sound emitting and collecting elements 33 to function only as speakers. It is also possible to make a part of the sound emitting and collecting elements 33 function as a microphone and the remaining sound emitting and collecting elements 33 function as speakers. The user can switch the operation of the sound emission and collection device 1 by operating the operation unit 19.

  Moreover, the sound emission and collection device 1 is provided on the inner peripheral surface of each housing according to the rotation state (angle) of each housing 11 to 17 detected by the rotation detection unit 53 and the rotation detection unit 55. The sound emitting and collecting elements 33-1 to 33-11 can be automatically made to function as speakers or microphones.

  Specifically, the sound emission and collection device 1 operates as follows. FIG. 3 is an external view showing a usage example of the basic type of the sound emission and collection device. FIG. 3A shows the sound emitting and collecting apparatus 1 considerably larger than the actual size. As shown in FIG. 3B, the actual size is smaller than or equal to the personal computer P. good. In the subsequent drawings, the sound emitting and collecting device is illustrated to be considerably larger than the actual size so that the structure of the sound emitting and collecting device can be understood well.

  As shown in FIG. 3, when the sound emitting and collecting apparatus 1 is used in a basic type without being deformed, a plurality of users are arranged around the sound emitting and collecting apparatus 1, thereby allowing one to eight people. It can be used by people. In addition, it is possible to use a larger number of people by narrowing the interval between users. The sound emitting and collecting apparatus 1 is cylindrical as described above, and a plurality of sound emitting and collecting elements 33-1 to 33-11 are arranged on the inner peripheral surface. Therefore, for example, by operating the operation unit 19 to cause the sound emitting and collecting elements 33-1 to 33-11 to alternately function as a speaker and a microphone, the sound emitting and collecting element 33 that functions as a microphone is particularly used by the user. The sound emitting and collecting element 33 at a position substantially opposite to the sound picks up the sound emitted by the user. In addition, the sound emitting and collecting element 33 functioning as a speaker emits sound to the user, in particular, the sound emitting and collecting element 33 substantially facing the user.

  At this time, in the automatic setting mode, the control unit 57 of the sound emission and collection device 1 detects that the housings 11 to 17 are not rotated by the rotation detection units 53 and 55, and each sound emission and collection sound is detected. The elements 33-1 to 33-11 are set so as to alternately function as a speaker and a microphone. For example, the sound emitting and collecting elements 33-1, 33-3, 33-5, 33-7, 33-9, and 33-11 are functioned as microphones, and the remaining sound emitting and collecting elements are functioned as speakers.

  Next, in the sound emission and collection device 1, the sound emission and collection device 1 is deformed by rotating one or more of the housings 11, 13, and 17 about the rotation shafts 23, 25, and 29. It can be used according to the number and arrangement of users. 4 and 5 are external views showing modified examples in which each housing of the sound emission and collection device is rotated. First, when the casing 13 is rotated 180 degrees with respect to the casing 15 with the rotation axis 25 of the sound emission and collection device 1 as a central axis, an inverted S-shape is obtained as shown in FIG. In this case, as shown in FIG. 4 (A), the user is placed at a position facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. The sound emission and collection device 1 can be used by one or two people.

  At this time, in the automatic setting mode, the control unit 57 of the sound emission and collection device 1 detects that the rotation shaft 25 is rotated 180 degrees by the rotation detection unit 55B, and the other rotation detection unit 53. The rotation detecting unit 55 detects that the other rotation shaft is not rotating. The sound emission / collection elements 33-3, 33-4, 33-8, and 33-9 function as a microphone, and the other sound emission / collection elements 33 function as a speaker. When the sound emitted from the sound emitting and collecting element 33 is stereo, for example, the right channel sound is emitted to the sound emitting and collecting elements 33-1 to 33-2 and the sound emitting and collecting element 33-5 is emitted. It is recommended to set the left channel to emit sound. Since each sound emitting and collecting element 33 is attached to the inner peripheral surface, the emitted sounds cross each other, and the user U can hear the right channel sound from the right ear and the left channel sound from the left ear. It becomes like this. Thereby, sound can be emitted and collected efficiently.

  Further, the casing 11 is rotated 180 degrees with respect to the casing 13 with the rotation axis 23 of the sound emission and collection device 1 as the central axis, and the casing 17 with respect to the casing 15 with the rotation axis 29 as the central axis. When it is rotated 180 degrees, it becomes a type in which two S-shapes are back-to-back as shown in FIG. In this case, as shown in FIG. 4B, sound emitting and collecting elements 33 provided on the inner peripheral surface of the casing 11, the inner peripheral surfaces of the casings 13 and 15, and the inner peripheral surface of the casing 17, respectively. By arranging the users at the opposing positions, the sound emitting and collecting apparatus 1 can be used by one to three people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shafts 23 and 29 by 180 degrees and the other rotation shafts rotate by the rotation detection units 55A and 55C. Detect that it is not. The sound emission / collection elements 33-2, 33-5, 33-6, and 33-10 function as microphones, and the other sound emission / collection elements 33 function as speakers.

  Further, the casing 11 is rotated 180 degrees with respect to the casing 13 with the rotation axis 23 of the sound emission and collection device 1 as the central axis, and the casing 13 with respect to the casing 15 with the rotation axis 25 as the central axis. The casing 17 is rotated 180 degrees with respect to the casing 15 with the rotation axis 29 as the central axis. By doing in this way, as shown in FIG. 5, it becomes a type | mold which connected two S character by the edge part. In this case, as shown in FIG. 5, sound emission and collection provided respectively on the inner peripheral surface of the housing 11, the inner peripheral surface of the housing 13, the inner peripheral surface of the housing 15, and the inner peripheral surface of the housing 17. By disposing the user at a position facing the element 33, the sound emitting and collecting apparatus 1 can be used by one to four people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shafts 23, 25, and 29 by 180 degrees by the rotation detection units 55A, 55B, and 55C. It is detected that the rotation axis of the is not rotated. The sound emission / collection elements 33-2, 33-4, 33-7, and 33-10 function as microphones, and the other sound emission / collection elements 33 function as speakers.

  6 and 7 are external views showing modified examples in which each housing of the sound emission and collection device is rotated. The user can be deformed according to the number of users by rotating the rotating shaft 27 and the rotating shafts 23 and 29 of the sound emitting and collecting apparatus 1 as the central axes.

  First, the casing 13 is rotated 90 degrees with respect to the casing 15 from the state in which the right side surface 13R and the left side surface 15L face each other (0 degree state) with the rotation axis 27 of the sound emission and collection device 1 as the central axis. Then, as shown in FIG. 6A and FIG. In this case, as shown in FIG. 6 (A), the sound emitting and collecting apparatus 1 is provided by arranging the users at positions facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 13 and 15, respectively. Can be used by one person. Further, as shown in FIG. 6B, for example, the sound emitting and collecting apparatus 1 is placed at the corner of the table, and provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. The user is placed at a position facing the sound emitting and collecting element 33. Thereby, the sound emission and collection device 1 can be used by one or two people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 27 by 90 degrees and the other rotation shafts rotate by the rotation detection unit 53B. Detect not. The sound emission / collection elements 33-3, 33-4, 33-8, and 33-9 function as a microphone, and the other sound emission / collection elements 33 function as a speaker.

  Further, the housing 13 is rotated 180 degrees with respect to the housing 15 from the state in which the right side surface 13R and the left side surface 15L face each other (0 degree state) with the rotational axis 27 of the sound emitting and collecting apparatus 1 as the central axis. Then, as shown in FIGS. 7A and 7B, the shape is such that two Cs are arranged vertically. In this case, as shown in FIG. 7A, the sound emitting and collecting apparatus 1 can be used by one person by placing the user at a position facing the rotation shaft 27 that connects the housings 13 and 15. Can do. Further, as shown in FIG. 7B, the user is placed at a position facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. By disposing, the sound emitting and collecting apparatus 1 can be used by one or two people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 27 by 180 degrees and the other rotation shafts rotate by the rotation detection unit 53B. Detect not. The sound emission / collection elements 33-3, 33-4, 33-8, and 33-9 function as a microphone, and the other sound emission / collection elements 33 function as a speaker.

  8 and 9 are external views showing modified examples in which the respective housings of the sound emission and collection device are rotated. The user can be deformed according to the number of users by rotating the rotating shaft 27 and the rotating shafts 23 and 29 of the sound emitting and collecting apparatus 1 as the central axes.

  The case 13 is rotated about 30 degrees or 180 degrees from the state where the right side surface 13R and the left side surface 15L face each other with respect to the case 15 (0 degree state) with the rotation shaft 27 of the sound emitting and collecting apparatus 1 as the central axis. Move. Further, the casing 11 is rotated 180 degrees with respect to the casing 13 with the rotation axis 23 as the central axis. Further, the casing 17 is rotated 180 degrees with respect to the casing 15 with the rotation axis 29 as the central axis. If it does in this way, it will become a type as shown in Drawing 8 (A) and Drawing 8 (B). In this case, as shown in FIG. 8 (A), it faces the sound emitting and collecting elements 33 provided on the inner peripheral surface of the casing 11, the inner peripheral surfaces of the casings 13 and 15, and the inner peripheral surface of the casing 17, respectively. By disposing the user at a position where the sound is emitted, the sound emitting and collecting apparatus 1 can be used by one to three people. Further, as shown in FIG. 8B, the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 17, the inner peripheral surface of the casing 13, and the inner peripheral surface of the casing 15 are opposed to each other. By arranging users at positions, the sound emitting and collecting apparatus 1 can be used by one to three people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 detects that the rotation shaft 27 is rotated about 30 degrees or 180 degrees by the rotation detection unit 53B. . Further, the control unit 57 detects that the rotation shafts 23 and 29 are rotated 180 degrees by the rotation detection units 55A and 55C, and the other rotation shafts are not rotated. The sound emission / collection elements 33-2, 33-5, 33-6, and 33-10 function as microphones, and the other sound emission / collection elements 33 function as speakers.

  In addition, the housing 13 is rotated 90 degrees from the state in which the right side surface 13R and the left side surface 15L face each other with respect to the housing 15 (0 degree state) with the rotation axis 27 of the sound emission and collection device 1 as the central axis. Let Further, the casing 11 is rotated 180 degrees with respect to the casing 13 about the rotation axis 23, and the casing 17 is rotated 180 degrees with respect to the casing 15 about the rotation axis 29. Thereby, as shown in FIG. 9, it becomes a type | mold which connected two S-characters. In this case, as shown in FIG. 9, sound emission and collection provided on the inner circumferential surface of the housing 11, the inner circumferential surface of the housing 13, the inner circumferential surface of the housing 15, and the inner circumferential surface of the housing 17. By disposing the user at a position facing the element 33, the sound emitting and collecting apparatus 1 can be used by one to four people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 detects that the rotation shaft 27 is rotated 90 degrees by the rotation detection unit 53B. The motion detectors 55A and 55C detect that the rotation shafts 23 and 29 are rotated by 180 degrees and the other rotation shafts are not rotated. The sound emission / collection elements 33-2, 33-5, 33-7, and 33-10 function as a microphone, and the other sound emission / collection elements 33 function as a speaker.

  If the sound emission and collection device 1 is deformed to the state shown in FIGS. 3 to 9, the rotation shafts 23, 25, and 29 that are perpendicular to both side surfaces (both end surfaces) of the housings 11 to 17 are provided. Only the rotation shaft 27 parallel to the both end faces of the respective housings 11 to 17 need be provided, and the rotation shafts 21 and 31 need not be provided.

  FIG. 10 is still another external view showing a modified example in which each housing of the sound emission and collection device is rotated. 10B and 10C show a top view and a front view of a modified example of the sound emission and collection device. Arbitrary from 90 degrees to 180 degrees from the state in which the right side surface 13R and the left side surface 15L face the housing 15 with respect to the housing 15 with the rotation axis 27 of the sound emitting and collecting apparatus 1 as the central axis (0 degree state). Rotate to an angle of. Further, the housing 13 is rotated 90 degrees with respect to the housing 15 with the rotation shaft 25 as the central axis. As a result, a mold as shown in FIG. In this case, as shown in FIG. 10A, the user is placed at a position facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. By arranging, the sound emitting and collecting apparatus 1 can be used by one person.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 27 by an arbitrary angle of 90 to 180 degrees by the rotation detection unit 53B. It is detected by the motion detector 55B that the rotation shaft 25 is rotated 90 degrees and the other rotation shafts are not rotating. Then, the sound emitting and collecting elements 33-1 to 33-5 of the housing 11 and the housing 13 function as a microphone, and the other sound emitting and collecting elements 33-6 to 33-11 are set to function as a speaker. Since the sound emitting and collecting elements 33 provided in the housing 11 and the housing 13 are arranged in a substantially vertical direction with respect to the mounting surface of the sound emitting and collecting device 1, even if the user U speaks while raising and lowering his face. Sound can be collected efficiently.

  Further, the casing 13 is rotated 180 degrees with respect to the casing 15 with the rotation axis 25 of the sound emission and collection device 1 as the central axis, and the state shown in FIG. Subsequently, the casing 11 is rotated by 180 degrees with respect to the casing 13 with the rotation axis 21 of the sound emission and collection device 1 as the central axis, and the casing 17 with respect to the casing 15 with the rotation axis 31 as the central axis. Are rotated 180 degrees, the housing 11 is stacked on the housing 13 as shown in FIG. 10B (upper surface) and FIG. S-shaped with 17 stacked. In this case, as shown in FIG. 10B, the user is placed at a position facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. By disposing, the sound emitting and collecting apparatus 1 can be used by one or two people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 25 by 180 degrees by the rotation detection unit 55B, and the rotation shaft by the rotation detection unit 53C. 31 is rotated 180 degrees, and the rotation detecting unit 53A detects that the rotation shaft 21 is rotated 180 degrees and the other rotation shafts are not rotating. The sound emitting and collecting elements 33-1 to 33-3 and 33-9 to 33-11 of the casing 11 and the casing 17 function as microphones, and the other sound emitting and collecting elements 33-4 to 33-8 are speakers. Set to function as That is, the sound emitting and collecting element 33 provided in the lower casings 13 and 15 is caused to function as a speaker, and the sound emitting and collecting element 33 provided in the upper casings 11 and 17 is caused to function as a microphone. Thereby, since the sound emitting and collecting element 33 on the side close to the face of the user U is used as a microphone, it is possible to efficiently collect sound.

  Next, FIG. 11 is still another external view showing a modified example in which each housing of the sound emission and collection device is rotated. 11A and 11B show a top view and a front view of a modified example of the sound emission and collection device.

  The housing 13 is rotated 180 degrees with respect to the housing 15 with the rotation shaft 25 of the sound emission and collection device 1 as the central axis, and the state shown in FIG. Subsequently, with the rotation axis 23 of the sound emission and collection device 1 as a central axis, the housing 11 is 30 ° to 60 ° from the state in which the right side surface 11R and the left side surface 13L face the housing 13 (0 degree state). The housing 11 is rotated 90 degrees with respect to the housing 13 with the rotation shaft 21 as a central axis. In addition, the casing 17 is 30 degrees to 60 degrees from the state in which the right side surface 15R and the left side surface 17L face each other with respect to the casing 15 (0 degree state) with the rotation axis 29 of the sound emission and collection device 1 as the central axis. Rotate to any angle. Further, the casing 17 is rotated 90 degrees with respect to the casing 15 with the rotation axis 31 as the central axis. Thereby, the sound emission and collection device 1 becomes a shape as shown to FIG. 11 (A) * (B).

  In this case, as shown in FIG. 11 (A), the user is placed at positions facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. By disposing, the sound emitting and collecting apparatus 1 can be used by one or two people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 25 by 180 degrees by the rotation detection unit 55B, and the rotation shaft by the rotation detection unit 55A. 23 is rotated by an arbitrary angle of 30 degrees to 60 degrees, the rotation shaft 21 is rotated 90 degrees by the rotation detector 53A, and the rotation shaft 29 is rotated 30 degrees to 60 degrees by the rotation detector 55C. When the rotation detection unit 53C detects that the rotation shaft 31 is rotated 90 degrees and the other rotation shafts are not rotated, the casing 11 and the casing 17 are released. The sound collection elements 33-1 to 33-3 and 33-9 to 33-11 function as a microphone, and the sound collection elements 33-4 to 33-8 of the housings 13 and 15 are set to function as a speaker. . The sound emitting and collecting elements 33 provided in the housing 11 and the housing 17 are arranged in a substantially vertical direction with respect to the mounting surface of the sound emitting and collecting device 1, so that even if the user U speaks while raising and lowering his / her face. Sound can be collected efficiently.

  If the sound emission and collection device 1 is deformed to the state shown in FIGS. 3 to 11, the rotary shafts 23, 25, and 29 that are perpendicular to both side surfaces (both end surfaces) of the housings 11 to 17 are provided. Rotating shafts 21, 27, and 31 that are parallel to both end surfaces of the respective casings 11 to 17 need to be provided.

  Next, the movable part that connects the respective housings 11 to 17 of the sound emission and collection device 1 is not limited to the configuration shown in FIGS. 12 and 13 are diagrams showing another configuration of the sound emission and collection device. In the sound emission and collection device 3 shown in FIG. 12, the casing 11 can be rotated with respect to the casing 13 by the vertical axis on the side surfaces 11R and 13L. The movable part is configured to be rotatable. Similarly, the casing 17 can be rotated with respect to the casing 15 by the axis perpendicular to the side surfaces 15R and 17L, and the casing 17 can be rotated to the upper surface side and the lower surface side of the casing 15. The movable part is constituted. That is, two movable parts that pass through the center line (ring center line) C of each of the casings 11 to 17 arranged in a ring form centering on an axis parallel to the center line, and the casing 11 and the casing 13; The housing | casing 15 and the housing | casing 17 are connected so that rotation is possible. In the sound emitting and collecting apparatus 3, the same components as those of the sound emitting and collecting apparatus 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  Further, in order to provide the movable portion having the above-described configuration, the housing 11 is divided into the housing 11A and the housing 11B, and the housing 13 is divided into the housing 13A, the housing 13B, and the housing 13C. The body 15 is divided into a casing 15A and a casing 15B, and the casing 17 is divided into a casing 17A and a casing 17B.

  The casing 11A and the casing 11B are rotatably connected by a rotating shaft 20 provided in the cylindrical radial direction on the upper surface 11U side and in a direction parallel to the right side surface 11R and the left side surface 13L. . The housing 11 (11B) and the housing 13 (13A) can be rotated by a rotation shaft 23 provided in a direction perpendicular to the right side surface 11R of the housing 11 and the left side surface 13L of the housing 13. It is connected. The casing 13A and the casing 13B are rotatably connected by a rotating shaft 21 provided in the radial direction of the cylinder on the lower surface 13D side and parallel to the right side surface 11R and the left side surface 13L. . The housing 13B and the housing 13C, and the housing 13 (13C) and the housing 15 (15A) are connected in the same manner as the sound emitting and collecting apparatus 1 shown in FIG. The casing 15A and the casing 15B are rotatably connected by a rotating shaft 32 provided in the direction of the cylindrical radius on the lower surface 15D side and parallel to the right side surface 15R and the left side surface 17L. . The casing 15 (15B) and the casing 17 (17A) are provided with a rotation shaft 29 provided in a direction perpendicular to the right side surface 15R of the casing 15 and in a direction perpendicular to the left side surface 17L of the casing 17. It is connected so that rotation is possible. The casing 17A and the casing 17B are rotatably connected by a pivot shaft 31 provided in the radial direction of the cylinder on the upper surface 17U side and in a direction parallel to the right side surface 15R and the left side surface 17L. . That is, the rotation shafts 20, 21, 31, and 32 are axes that are arranged in parallel to the center line C of the ring.

  Therefore, in the sound emission and collection device 3, in addition to the modification of the sound emission and collection device 1 described with reference to FIGS. 3 to 9, as shown in FIG. The housing 11 can be rotated with respect to the surface. Further, the casing 15 can be rotated with respect to the casing 17 with the rotation axis 31 as the central axis. In this case, since the casing 11 is stacked on the casing 13 and the casing 17 is deformed into a shape stacked on the casing 15, the positions facing the inner peripheral surfaces of the casings 11-17. The sound emitting and collecting apparatus 1 can be used by one person by arranging users.

  At this time, if the automatic setting mode is set, the control unit 57 of the sound emission and collection device 3 rotates the rotation shaft 20 by 180 degrees by the rotation detection unit 53D, and the rotation shaft by the rotation detection unit 53C. 31 is rotated 180 degrees, and it is detected that the other rotating shaft is not rotating. The sound emitting and collecting elements 33-1 to 33-3 of the housing 11 and the sound emitting and collecting elements 33-9 to 33-11 of the housing 17 function as microphones, and the other sound emitting and collecting elements 33 function as speakers. Set to Thereby, since the sound emitting and collecting element 33 on the side close to the face of the user U is used as a microphone, it is possible to efficiently collect sound.

  Further, the housing 13 is rotated 90 degrees with respect to the housing 15 with the rotation shaft 27 of the sound emission and collection device 3 as the central axis. Subsequently, with the rotation axis 23 of the sound emission and collection device 3 as a central axis, the housing 11 is 30 ° to 60 ° from the state in which the right side surface 11R and the left side surface 13L face the housing 13 (0 degree state). The housing 11 is rotated 90 degrees with respect to the housing 13 with the rotation shaft 20 as a central axis. In addition, the casing 17 is 30 degrees to 60 degrees from the state in which the right side surface 15R and the left side surface 17L face each other with respect to the casing 15 (0 degree state) with the rotation axis 29 of the sound emission and collection device 1 as the central axis. Rotate to any angle. Further, the casing 17 is rotated 90 degrees with respect to the casing 15 with the rotation axis 31 as the central axis. Thereby, the sound emission and collection device 3 can be deformed into a shape as shown in FIG.

  In this case, as shown in FIG. 13B, the user is placed at a position facing the sound emitting and collecting elements 33 provided on the inner peripheral surfaces of the casings 11 and 13 and the inner peripheral surfaces of the casings 15 and 17, respectively. By disposing, the sound emitting and collecting apparatus 1 can be used by one or two people.

  At this time, when the automatic setting mode is set, the control unit 57 of the sound emission and collection device 1 rotates the rotation shaft 27 by 90 degrees by the rotation detection unit 53B, and the rotation shaft by the rotation detection unit 55A. 23 is rotated by an arbitrary angle of 30 to 60 degrees, the rotation shaft 20 is rotated by 90 degrees by the rotation detection unit 53D, and the rotation shaft 29 is arbitrarily rotated by 30 to 60 degrees by the rotation detection unit 55C. , And when the rotation detecting unit 53C detects that the rotation shaft 31 is rotated 90 degrees and the other rotation shafts are not rotating, the release of the casing 11 and the casing 17 is released. The sound collection elements 33-1 to 33-3 and 33-9 to 33-11 function as a microphone, and the sound collection elements 33-4 to 33-8 of the housings 13 and 15 are set to function as a speaker. . Thereby, since the sound emitting and collecting elements 33 provided in the housing 11 and the housing 17 are arranged in a substantially vertical direction with respect to the mounting surface of the sound emitting and collecting device 1, the user U moves the face up and down. Even if you speak, you can efficiently collect voice.

  Next, the movable part that connects each housing of the sound emission and collection device may have another configuration. FIG. 14 is a diagram showing still another configuration of the sound emission and collection device. In the sound emission and collection device 5 shown in FIG. 14, it is the structure which used the ball joint for the movable part which connects each housing | casing 11-17. That is, a portion corresponding to the right side surface 11R of the housing 11 and a portion corresponding to the left side surface 13L of the housing 13 are ball joints 61, a portion corresponding to the right side surface 13R of the housing 13 and the left side surface 15L of the housing 15 are formed. The portion corresponding to is a ball joint 63, and the portion corresponding to the right side surface 15R of the housing 15 and the portion corresponding to the left side surface 17L of the housing 17 are connected by a ball joint 65. In the sound emitting and collecting apparatus 5, the same reference numerals are given to the same components as those of the sound emitting and collecting apparatus 1, and detailed description thereof is omitted.

  Thus, since the ball joint is used for each movable part of the sound emission and collection device 5, the surface (end surface) corresponding to the right side surface 11R of the housing 11 and the left side surface 13L of the housing 13 facing this surface. It is possible to make the housing 11 rotatable with respect to the housing 13 around an axis perpendicular to the surface (end surface) corresponding to. Similarly, the casing 13 is centered on an axis that is perpendicular to the surface (end surface) corresponding to the right side surface 13R of the casing 13 and the surface (end surface) corresponding to the left side surface 15L of the casing 15 facing this surface. Can be rotated with respect to the housing 15. Further, the casing 15 is centered on an axis perpendicular to the surface (end surface) corresponding to the right side surface 15R of the casing 15 and the surface (end surface) corresponding to the left side surface 17L of the casing 17 facing this surface. The casing 17 can be made rotatable.

  Further, a portion corresponding to the left side 13L of the upper surface 13U, outer peripheral surface 13T, and lower surface 13D of the housing 13 and a portion corresponding to the left side 15L and right side 15R of the upper surface 15U, outer peripheral surface 15T, and lower surface 15D of the housing 15. Are provided with notches 81-89. Thereby, the housing | casing 11 can be rotated 90 degree | times with respect to the housing | casing 13 in three directions, an upper surface side, an outer peripheral surface side, and a lower surface side. Similarly, the casing 13 can be rotated 90 degrees in three directions with respect to the casing 15, and the casing 15 can be rotated 90 degrees in three directions with respect to the casing 17.

  Furthermore, in the sound emission and collection device 5, by using a ball joint for the movable part, it is not necessary to provide two axes for the movable part for rotation.

  However, since the upper limit (predetermined value) of the rotation angle (swing angle) of the ball joint is 90 degrees as described above, the sound emitting and collecting apparatus 1 and the sound emitting and collecting apparatus shown in FIGS. As shown in FIG. 3, it cannot be rotated by 180 degrees until the upper surfaces or the lower surfaces are in contact with each other. However, the modified examples shown in FIGS. 4 to 6, 8 </ b> A, and 9 can be implemented.

  In addition, the housing | casing 11 and the housing | casing 13 and the housing | casing 15 and the housing | casing 17 provide the ball joint 61 * 65, and are parallel to the centerline C of the ring formed by each housing | casing 11-17. It can be said that it is the structure connected so that rotation was possible centering on an axis.

  As described above, in the sound emission and collection device according to the embodiment of the present invention, the basic type is a cylindrical shape, and the casings 11 to 17 having a shape obtained by dividing the cylinder into four equal parts in the circumferential direction include the casings 11 to 17. As shown in the drawings, it can be transformed into various shapes. Further, the deformed state can be detected by the rotation detection unit, and automatic setting is possible so that the sound emitting and collecting elements 33-1 to 33-11 function as a speaker or a microphone according to the state.

  In the present specification, not all the modifications of the sound emission and collection devices 1, 3, and 5 have been described, and other modifications that are not shown in the drawings can be naturally implemented. Further, when the automatic setting mode is set, the sound emitting and collecting element 33 is automatically set so as to appropriately function as a speaker or a microphone even in a modification (not shown).

  In the above description, the sound emitting and collecting apparatus 1 has been described as being composed of four casings each having a shape obtained by dividing a cylinder into four (in four equal parts) in the radial direction, but the present invention is not limited to this. Other shapes may be used. That is, any shape can be selected for each housing as long as both ends are brought into contact with other housings and can be arranged in an annular shape. FIG. 15 is a diagram illustrating a modification of the shape of the sound emission and collection device. For example, as shown in FIG. 15, the sound emission and collection device 1 may have a shape in which a square tube is divided into four. Further, the portion to be divided may be a corner (vertex) portion as shown in FIG. 15A or a side portion as shown in FIG. 15B. Further, as shown in FIG. 15C, the hexagonal cylinder may be divided into six shapes, that is, six housings may be annularly arranged with both end surfaces in contact with each other.

It is the 6th page figure of the sound emission and collection apparatus which concerns on embodiment of this invention, AA arrow line view, and BB arrow line view. It is the block diagram which showed schematic structure of the signal processing circuit of the sound emission and collection apparatus. It is an external view which shows the usage example of the basic type of a sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is an external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is another external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is another external view which shows the modification which rotated each housing | casing of the sound emission and collection apparatus. It is a figure which shows another structure of a sound emission and collection apparatus. It is a figure which shows another structure of a sound emission and collection apparatus. It is a figure which shows another structure of a sound emission and collection apparatus. It is a figure which shows the modification of the shape of a sound emission and collection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C, 3, 5 ... Sound emitting and collecting apparatus 11, 13, 15, 17 ... Housing 11U ... Upper surface 11D ... Lower surface 11L ... Left side 11R ... Right side 11T ... Outer surface 11N ... Inner surface 19 , 19A, 19B: operation unit 20, 21, 23, 25, 27, 29, 31, 32 ... rotating shaft 22, 26, 30 ... movable unit 33 ... sound emitting and collecting element 35 ... cable 41 ... signal input / output unit 43 ... Sound emission processing unit 45 ... Switching unit 47 ... Sound collection processing unit 49 ... Echo canceling unit 53, 53A, 53B, 53C, 55D ... Rotation detection unit 55, 55A, 55B, 55C ... Rotation detection unit 57 ... Control unit 61, 63, 65 ... Ball joint 81-89 ... Notch P ... Personal computer U ... User

Claims (2)

A plurality of housings in which both end faces are arranged in an annular shape so as to contact or face each other;
When the plurality of housings are arranged in a ring shape, a plurality of sound emitting and collecting means that are installed on the inner periphery of the ring and can switch operation as a speaker or a microphone;
Among the plurality of casings, a plurality of casings that are pivotally connected to adjacent casings with a vertical axis as a center on an end face of each casing other than the end faces facing or facing a pair of casings. Movable means;
A rotation detection means for detecting a rotation state of the plurality of movable means;
Sound emission / collection sound setting means for causing each of a plurality of sound emission / collection means installed in each housing to function as a speaker or a microphone according to the rotation state of each movable means detected by the rotation detection means;
With
At least one of the plurality of movable means is a sound emitting and collecting device connected to be rotatable about an axis parallel to the end face.   2. The sound emission and collection device according to claim 1, wherein, among the plurality of movable means, two movable means through which a center line of the ring passes are further connected to be rotatable about an axis parallel to the center line. .

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