JP2011023783A - Acoustic device and electronic apparatus including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic device which is capable of changing directivity and capable of setting the most suitable acoustic field in accordance with a position of a user or the like, and to provide an electronic apparatus including the same. <P>SOLUTION: A loudspeaker unit 3 with which a panel part 8 having a loudspeaker device 9 attached thereto is freely turnably coupled by coupling parts 10 is provided in a front surface 2a of a body part 2 of a center loudspeaker device 1, and a CPU 5 instructs a loudspeaker unit-driving part 4 provided in the body part 2 to bend the loudspeaker unit 3 into a prescribed form, on the basis of a ride position obtained from the outside, and the loudspeaker unit driving part 4, in response to the instruction from the CPU 5, drives motors 23 of piston parts 20 provided corresponding to respective coupling parts 10 to project the moving parts 22 from the body part 2 and turns the coupling parts 10, whereby the loudspeaker unit 3 is bent. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an acoustic device that is installed on, for example, an instrument panel of a vehicle and can change the directivity of sound in an arbitrary direction, and an electronic apparatus including the acoustic device.

  For example, in an automobile as a vehicle, a center speaker is installed in an instrument panel (hereinafter referred to as an instrument panel) to assist these speakers in addition to speakers installed in a door of a vehicle or behind a rear seat. (For example, see Patent Documents 1 to 3).

  In the on-vehicle acoustic device described in Patent Document 1, a speaker is disposed on the front panel of the head unit, and a control unit is mounted on the front surface of the speaker via a support member.

  The in-vehicle audio device described in Patent Document 2 is integrally attached to the operation panel of the in-vehicle audio device so that the center speaker can be rotated via a support member, and the center speaker is attached to the front surface of the speaker from a storage position along the operation panel by a motor. Is rotated to a use position that is directed forward.

  The audio device described in Patent Document 3 covers the entire front surface of the audio device main body, and a speaker is provided on the back surface side of the operation panel unit that is attached to the audio device main body so as to be freely opened and closed.

JP 7-298381 A JP 2000-295683 A JP 2001-167568 A

  The on-vehicle acoustic device described in Patent Document 1 has a problem that it is difficult to switch the directivity toward various seats such as a driver seat and a passenger seat because a speaker is fixed.

  In addition, the in-vehicle audio device described in Patent Document 2 and the acoustic device described in Patent Document 3 are only in one direction that can rotate a panel on which a speaker is installed. For example, a driver seat and a passenger seat It was not possible to have directivity in multiple directions. In addition, it is necessary for the user to determine the direction by rotating the panel on which the speaker is installed, and the speaker cannot automatically detect the user and rotate it in that direction. .

  Furthermore, due to the problems described above, conventionally, the user has to set the sound field according to the boarding position and the number of passengers. Further, even when automatic setting is performed, an optimal sound field cannot always be set.

  Accordingly, the present invention provides, for example, an acoustic device that can switch directivity or provide directivity in a plurality of directions, and can set an optimal sound field according to the position of a user or the like. It is an object to provide an electronic device including an audio device.

  In order to solve the above-described problem, an audio device according to claim 1 is an audio device including a plurality of speakers, wherein the plurality of speakers are connected to each other in a bendable manner, and the connection means includes the connecting device. It is characterized by comprising changing means for changing the bending state between a plurality of speakers, and bending state instruction means for instructing the changing means on the bending state between the plurality of speakers in the connecting means.

It is a block diagram of the center speaker apparatus concerning 1st Example of this invention. It is a front view of the speaker unit shown by FIG. It is the side view which showed the rail part and movable part which were shown by FIG. It is explanatory drawing which shows the structure of the connection part of the speaker unit shown by FIG. It is explanatory drawing which showed the structure of the speaker unit drive part shown by FIG. It is the flowchart which showed the operation | movement which changes the bending state of the speaker unit shown by FIG. It is a seating chart of the vehicle to which the center speaker apparatus shown by FIG. 1 was attached. It is explanatory drawing which showed the speaker unit bent by the flowchart shown by FIG. It is explanatory drawing which showed the speaker unit bent by the flowchart shown by FIG. It is explanatory drawing which showed the speaker unit bent by the flowchart shown by FIG. It is explanatory drawing which showed the speaker unit bent by the flowchart shown by FIG. It is the flowchart which showed the operation | movement which changes the bending state of the peaker unit in the center speaker apparatus concerning the 2nd Example of this invention. It is the flowchart which showed the operation | movement which changes the bending state of the peaker unit in the center speaker apparatus concerning the 3rd Example of this invention. It is the flowchart which showed the sound pressure interlocking speaker drive process shown by FIG. It is explanatory drawing which showed the sound pressure interlocking speaker drive process shown by FIG.

  Hereinafter, an audio device according to an embodiment of the present invention will be described. An acoustic device according to an embodiment of the present invention is configured to connect a plurality of speakers so as to be bendable by a connecting unit, and the bending state instruction unit instructs the changing unit to indicate a bending state between the plurality of speakers in the connecting unit. Since the means changes the bending state of the plurality of speakers in the connecting means, the bending state indicating means indicates the direction in which the directivity is desired, and the plurality of speakers connected by the changing means are in response to the instruction. If the bending state is changed, the directivity can be switched in any direction. Further, if the plurality of speakers are bent so as to be directed substantially uniformly in a plurality of directions, directivity can be provided in a plurality of directions.

  Further, the bending state instruction means may include detection means for detecting the position of the user, and instruct the changing means to indicate the bending states of the plurality of speakers based on the detection result of the detection means. In this way, directivity can be automatically directed to the position of the user.

  Further, sound field setting means for setting sound fields output from a plurality of speakers based on an instruction from the bending state instruction means may be provided. By doing in this way, the optimal sound field according to the bending state of a some speaker, ie, directivity, can be set.

  Further, it may be provided with source discriminating means for discriminating the contents of the input audio source, and the bending state instruction means may instruct the changing means to bend the plurality of speakers based on the discrimination result of the source discrimination means. By doing in this way, it is possible to bend the speaker appropriately according to the input source content, for example, the content of the source such as TV or CD, music program or news program.

  The sound field setting means may set sound fields output from a plurality of speakers based on the determination result of the source determination means. In this way, an optimal sound field can be set according to the input source content, for example, the content of the source such as a television or CD, or a music program or news program.

  Further, the sound pressure of the sound source input by the source determination unit may be extracted, and the bending state instruction unit may instruct the changing unit to change the bending state of the speaker in accordance with the sound pressure. By doing so, since the state of the speaker changes in accordance with the sound pressure, for example, it can be enjoyed by the user by changing it in accordance with the sound pressure of the bass.

  In addition, a plurality of speakers connected by the connecting means are installed in a row on one surface of the main body, and the changing means can move both ends of the plurality of speakers in the connecting direction of the plurality of speakers on one surface. And a pushing means that is provided corresponding to the connecting means and that changes the bending state by extruding the connecting means so as to be movable in and out of the main body through an opening provided on one surface. Also good. By doing in this way, the bending state of a some speaker can be changed by the extrusion means which pushes a connection means from the back of the some speaker installed in a line on one surface.

  Moreover, you may equip an electronic device with the audio equipment mentioned above. In this way, the directivity of the built-in speaker can be switched in a car navigation system, car stereo, or home appliance, and an optimal sound field can be set according to the position of the user or the like. .

  A center speaker device 1 as an acoustic device according to a first embodiment of the present invention will be described with reference to FIGS. The center speaker device 1 is attached to an instrument panel between a driver seat and a passenger seat of a vehicle to which another on-vehicle speaker device is attached. And the center speaker apparatus 1 is provided with the main-body part 2 and the speaker unit 3 as shown in FIG. Hereinafter, an arrow Y parallel to the direction in which the moving unit 22 described later enters and exits the main body 2 is referred to as a depth direction, and the depth direction Y is parallel to the direction in which the rail unit 13 described below is provided and the movable unit 11 moves. An arrow X orthogonal to the width direction is referred to as a width direction, and an arrow Z orthogonal to both the depth direction Y and the width direction X is referred to as a thickness direction.

  The main body portion 2 is formed in a substantially box shape, and a speaker unit 3 and a rail portion 13 are provided on a front surface 2a as one surface facing an occupant such as a driver. The main body 2 includes a speaker unit driving unit 4, a CPU 5, an audio processing unit 6, and an operation unit 7 inside.

  As shown in FIGS. 2 and 3, a pair of rail portions 13 are provided at both ends in the thickness direction Y of the front surface 2 a of the main body portion 2, and extend along the width direction X. The rail portion 13 includes a concave groove portion 13 a in which the movable portion 11 described later travels, and a holding portion 13 b that holds the movable portion 11 so as not to be detached from the rail portion 13. Further, stoppers (not shown) that restrict the movement of the movable portion 11 are provided at both ends of the rail portion 13.

  The speaker unit 3 as a plurality of speakers includes a panel unit 8, a speaker device 9, a connecting unit 10, a movable unit 11, and a shaft unit 12.

  The panel unit 8 is formed in a flat plate shape, and is attached to the surface thereof so that the diaphragm of the speaker device 9 is parallel to the panel unit 8, that is, sound is emitted from the surface. The speaker device 9 includes a diaphragm and a circuit for driving the diaphragm. Of course, the speaker device 9 preferably has a shorter depth direction Y. The panel unit 8 and the speaker device 9 form a speaker described in the claims.

  The connecting portion 10 as a connecting means is provided with substantially cylindrical hinge portions 10 a and 10 b formed integrally with the panel portion 8. As shown in FIG. 4A, the hinge portion 10a is provided with an insertion hole 10a1 into which a rotation shaft 10b1 described later is inserted at the other end of the hinge portion 10a. The hinge portion 10b includes a substantially cylindrical rotating shaft 10b1 protruding from one end of the hinge portion 10b. Then, by inserting the rotation shaft 10b1 into the insertion hole 10a1, the adjacent panel portions 8 are connected to each other so as to be rotatable about the thickness direction Z. That is, a plurality of speakers are connected to each other so that they can be bent. Further, as shown in FIG. 4B, the connecting portion 10 has the insertion hole 10a1 and the rotating shaft 10b1 in a direction in which the panel portions 8 are parallel to each other by a biasing means such as a spiral torsion coil spring 10c. That is, the speaker unit 3 is urged in a direction that is linear along the width direction X.

  The movable part 11 as the moving means is formed in a substantially disk shape, and a pair is provided at both ends in the thickness direction Z of the shaft part 12. The movable portion 11 is supported so as to be rotatable about the thickness direction Z with respect to the shaft portion 12, and is fitted to the rail portion 13 so as to be able to travel in the width direction X. The movable part 11 is comprised with the bearing, for example. That is, it is movable in the connecting direction of a plurality of speakers.

  The shaft portion 12 is formed in a substantially columnar shape and is provided integrally with the end portion of the panel portion 8 constituting both ends of the speaker unit 3. The shaft portion 12 is provided with a pair of movable portions 11 at both ends in the thickness direction Z.

  And the wiring from the main-body part 2 is connected to the one end part of the speaker unit 3, and each speaker apparatus 9 is electrically connected through each panel part 8 and the connection part 10. FIG.

  As shown in FIG. 5, the speaker unit driving unit 4 as a changing unit includes a plurality of piston units 20 corresponding to the connecting unit 10. Further, the speaker unit driving unit 4 includes a control circuit (not shown) that drives a motor 23 of the piston unit 20 described later according to an instruction from the CPU 5.

  The piston part 20 as an extruding means includes a fixed rack 21 and a moving part 22. The fixed rack 21 is housed in a plurality of openings 26 opened along the width direction X of the front surface 2 a of the main body 2 and is fixed to the main body 2. The fixed rack 21 is formed in a straight line shape, and the longitudinal direction thereof is arranged in parallel with the depth direction Y described above. The fixed rack 21 is provided over the entire length of the main body 2 in the depth direction Y. The opening 26 opens at a position overlapping the position of the connecting portion 10 when the speaker unit 3 on the front surface 2a of the main body 2 is linear. That is, the extrusion means is provided corresponding to the connection means.

  The moving portion 22 has a front end portion 22a exposed from the opening 26 in a rod shape and is accommodated in the main body portion 2, and a rear end portion 22b provided with a motor 23 and the like described later is formed in a flat shape. The moving unit 22 includes a motor 23, a worm 24, and a worm gear 25.

  The motor 23 is fixed to the rear end portion 22 b of the moving unit 22. A worm 24 is attached to the output shaft of the motor 23. The worm gear 25 is supported by the moving part 22 so as to be rotatable about the thickness direction Z. The worm gear 25 meshes with both the worm 24 and the fixed rack 21.

  For example, when the motor 23 is driven to rotate in the forward direction, the piston portion 20 travels on the fixed rack 21 so that the distal end portion 22a of the moving portion 22 passes from the inside of the main body 2 to the outside of the main body 2 through the opening 26. Move. When the motor 23 is driven in reverse, for example, when the motor 23 is driven in reverse, the worm gear 25 travels on the fixed rack 21, and the distal end portion 22 a of the moving portion 22 passes from the outside of the main body 2 to the inside of the main body 2 through the opening 22. Moving. That is, the moving part 22 is freely movable in and out of the main body part 2 like a piston through an opening 26 provided in the front surface 2a.

  The CPU 5 as a bending state instruction means and detection means is a microcomputer incorporating a CPU (central processing unit) and a memory such as a RAM and a ROM, and an audio processing section described later with respect to the speaker unit driving section 4. 6, the operation unit 7, and boarding information (which position of the seat the user is on) determines which piston unit 20 of the plurality of piston units 20 of the speaker unit driving unit 4 is to be operated. The speaker unit drive unit 4 is instructed. Further, the sound field corresponding to the boarding information is determined and instructed to the audio processing unit 6.

  The audio processing unit 6 as sound field setting means includes a decoding circuit that decodes encoded data with respect to an audio signal input from an external audio input, a DA conversion circuit that converts a digital signal into an analog signal, , Equipped with an equalizing circuit for adjusting the delay and the sound quality for making the sound field instructed by the CPU 5 and an amplifier circuit for amplifying the signal subjected to these processes, and after performing the process according to the input signal Output to the speaker unit 3.

  The operation unit 7 includes, for example, a plurality of buttons, a display unit, and the like, and the user performs setting of the center speaker device 1 and the like. The operation unit 7 may be configured as a remote controller (remote controller).

  The center speaker device 1 having the above-described configuration detects which seat of an attached vehicle is occupied by an occupant, and changes the bending state of the speaker unit 3 by the speaker unit driving unit 4 according to the riding state. . FIG. 6 shows a flowchart of an operation for changing the bending state of the speaker unit 3 in accordance with the riding state of the passenger. The flowchart shown in FIG. 6 is executed by the CPU 5.

  As shown in FIG. 7, the seating chart of the vehicle 100 in this embodiment is a driver's seat A on the right side of the front seat, a passenger seat B on the left side of the front seat, C on the right side of the rear seat, and D on the left side. 1 is provided in front of the middle between the driver seat A and the passenger seat B. Further, as shown in FIG. 8 and subsequent figures, the plurality of connecting portions 10 are distinguished from each other by attaching reference numerals to the connecting portions 101, 102, 103, 104, 105, and 106 from the left side in the figure.

  Description will be made along the flowchart of FIG. First, in step S101, a boarding position detection process is performed and it progresses to step S102. In this step, it is detected which occupant is in which seat, and the boarding state (boarding information) is stored. The detection of which seat the occupant is on is, for example, a method of obtaining a signal indicating the seat belt wearing state from the vehicle, a method of obtaining a seating sensor state by attaching a seating sensor to each seat, The state of each seat is acquired and determined by a known method such as a method of providing a camera in the room, obtaining an image of each seat taken, and detecting whether or not the user is on the image.

  Next, in step S102, it is determined whether or not the detection result in step S101 is a ride only for driver seat A. If the ride is for driver seat A only (in the case of YES), the process proceeds to step S103; If NO, the process proceeds to step S104.

  Next, in step S103, the speaker unit 3 is moved in the direction of the driver seat A, and the sound field is set according to the driver seat A. In this step, the speaker unit 3 is bent into a form as shown in FIG. FIG. 8 is a view of the center speaker device 1 as viewed from above (however, the rail portion 13 is omitted). As shown in FIG. 8, the moving portion 22 of the piston portion 20 corresponding to the connecting portion 101 moves so as to protrude from the main body portion 2, and the connecting portion 101 is pushed out by the distal end portion 22 a of the moving portion 22. Then, the connecting portion 101 rotates against the internal urging force, and the movable portions 11 provided at both ends of the speaker unit 3 move along the rail portion 13 so as to approach the connecting portion 101, so that the speaker The unit 3 bends from the main body 2 into a substantially convex shape with the connecting portion 101 as a bending point. That is, the bending state instructing unit instructs the bending state of the plurality of speakers based on the detection result of the detecting unit, and the changing unit changes the bending state between the plurality of speakers in the connecting unit.

  In the form shown in FIG. 8, six of the seven speaker devices 9 provided in the speaker unit 3 of the present embodiment are directed toward the driver seat A, and directivity can be directed toward the driver seat A. . Then, for example, the sound field is optimized in the driver's seat A by using a so-called time alignment function in which a delay is inserted in each speaker so that the sound transmission times from the in-vehicle speakers and the center speaker device 1 are substantially the same ( A delay or the like is set so that a sound can be heard from the front center of the user in the driver's seat A).

  Next, in step S104, it is determined whether or not the detection result in step S1 is a passenger seat B only. If the passenger seat B is a passenger seat only (YES), the process proceeds to step S105; If NO, the process proceeds to step S106.

  Next, in step S105, the speaker unit 3 is moved in the direction of the passenger seat B, and the sound field is set according to the passenger seat B. In this step, the speaker unit 3 is bent into a form as shown in FIG. FIG. 9 is a view of the center speaker device 1 as viewed from above, similarly to FIG. As shown in FIG. 9, the moving portion 22 of the piston portion 20 corresponding to the connecting portion 106 moves so as to protrude from the main body portion 2, and the connecting portion 106 is pushed out by the distal end portion 22 a of the moving portion 22. Then, the connecting portions 106 rotate against each other against the internal urging force, and the movable portions 11 provided at both ends of the speaker unit 3 move along the rail portions 13 so as to approach the connecting portions 106, thereby The unit 3 bends from the main body portion 2 into a convex substantially square shape with the connecting portion 106 as a bending point.

  In the form shown in FIG. 9, six of the seven speaker devices 9 provided in the speaker unit 3 of the present embodiment are directed to the passenger seat B side, and directivity can be directed to the passenger seat B side. . Then, as in FIG. 8, the time alignment function is used to delay the sound field so that it is in an optimal viewing state in the passenger seat B (for example, a sound is heard from the front center of the user riding in the passenger seat B). Etc. are set.

  Next, in step S106, it is determined whether or not the detection result in step S1 is in both the driver seat A and the passenger seat B. If the driver seats in both the driver seat A and the passenger seat B (YES) In the case of (No), the process proceeds to Step S107, and if not (NO), the process proceeds to Step S108.

  Next, in step S107, the speaker unit 3 is moved in the direction of the driver seat A and the passenger seat B, and the sound field is set in accordance with the passenger seat B. In this step, the speaker unit 3 is bent into a form as shown in FIG. FIG. 10 is a view of the center speaker device 1 as viewed from above, similar to FIGS. 8 and 9. As shown in FIG. 10, the moving part 22 of the piston part 20 corresponding to the connecting parts 103 and 104 moves so as to protrude from the inside of the main body part 2, and the connecting parts 103 and 104 are moved by the distal end part 22 a of the moving part 22. Extrude. Then, the connecting portions 103 and 104 rotate against each other against the internal biasing force, and the movable portions 11 provided at both ends of the speaker unit 3 move along the rail portion 13 so as to approach the connecting portions 103 and 104. Then, the speaker unit 3 bends from the main body 2 into a convex substantially mountain shape with the connecting portions 103 and 104 as bending points.

  In the form shown in FIG. 10, among the seven speaker devices 9 provided in the speaker unit 3 of the present embodiment, three located on the right side face the driver's seat A side, and three located on the left side represent the passenger seat B side. Since the equal number of speaker devices 9 are directed to the driver seat A side and the passenger seat B side, directivity can be directed to both. As in FIGS. 8 and 9, the time alignment function enables the sound field to be optimally viewed in the driver seat A and the passenger seat B (for example, the sound from the front center of the user riding in the driver seat A and the passenger seat B). The delay etc. is set so that the sound can be heard.

  Next, in step S108, it is determined whether or not the detection result in step S1 is in both the driver seat A and the passenger seat B and at least one of the rear seat C or D. If the user is in the seat (if YES), the process proceeds to step S109, and if not (NO), the process ends.

  Next, in step S109, the speaker unit 3 is moved in the direction of the driver seat A, the passenger seat B, and the rear seats C and D, and the sound field is set to match all seats. In this step, the speaker unit 3 is bent into a form as shown in FIG. FIG. 11 is a view of the center speaker device 1 as viewed from above, as in FIGS. 8, 9, and 10. As shown in FIG. 11, the moving portion 22 of the piston portion 20 corresponding to the connecting portions 102 and 105 moves so as to protrude from the inside of the main body portion 2, and the connecting portions 102 and 105 are moved by the distal end portion 22 a of the moving portion 22. Extrude. Then, the connecting portions 102 and 105 rotate against each other against the internal urging force, and the movable portions 11 provided at both ends of the speaker unit 3 move along the rail portion 13 so as to approach the connecting portions 102 and 105. Then, the speaker unit 3 bends from the main body 2 into a convex substantially mountain shape with the connecting portions 102 and 105 as bending points.

  In the form shown in FIG. 11, of the seven speaker devices 9 provided in the speaker unit 3 of the present embodiment, two located on the right side face the driver's seat A side, and two located on the left side are on the passenger seat B side. The three located in the center go to the rear seat side, and directivity can be directed to all seats. 8, 9, and 10, the time alignment function allows the sound field to be optimally viewed in all seats (for example, a state where sound can be heard from the front center of the user riding in each seat). Set the delay and so on.

  In the above-described operation, how much the moving unit 22 is operated with respect to the boarding information, that is, the form of the speaker unit 3 may be set in advance in a memory or the like in the CPU 5 as a table, for example.

  In this embodiment, each connecting portion 10 is rotated by being pushed by the moving portion 22, but when the moving portion 22 is accommodated in the main body portion 2, the pushed connecting portion 10 is twisted. The panel portion 8 is rotated in a straight line by the urging force of the coil spring 10c, and returns to the state shown in FIG.

  According to the present embodiment, the speaker unit 3 in which the panel unit 8 having the speaker device 9 attached to the front surface 2a of the main body unit 2 of the center speaker device 1 is rotatably coupled by the connecting unit 10 is provided. Based on the obtained boarding position, the CPU 5 instructs the speaker unit driving unit 4 provided inside the main body 2 to bend the speaker unit 3 in a predetermined form, and the speaker unit driving unit 4 The speaker unit 3 is bent by driving the motor 23 of the piston portion 20 provided corresponding to each connecting portion 10 in accordance with an instruction to project the moving portion 22 from the main body portion 2 and rotating the connecting portion 10. Therefore, the directivity of the speaker unit 3 can be given toward the boarding position of the user or the like.

  In addition, since the sound field is set in accordance with the bent state of the speaker unit 3, it is possible to obtain an optimal viewing state for the user.

  In the above-described embodiment, no sound may be emitted from the speaker device 9 facing in a direction other than the direction in which the directivity is desired. For example, in the case of the form of FIG. 8, no sound may be emitted from the speaker device 9 that is not facing the driver's seat A. Similarly, in the case of FIG. 9, sound may be prevented from being emitted from the speaker device 9 that is not facing the passenger seat B, and in the case of FIG. 10, the driver seat A and the passenger seat B are facing. Sound may not be emitted from the speaker device 9 that is not present.

  Further, when directivity is directed in a plurality of directions as in FIG. 10 and the like, different sounds (information) may be produced. For example, in the case of FIG. 10, the speaker device 9 facing the driver's seat A side outputs a guidance voice of the car navigation system, and the speaker device 9 facing the passenger seat B side outputs a sound from a CD or the like. Also good.

  Next, a center speaker device 1 according to a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, the configuration of the center speaker device 1 shown in FIGS. 1 to 5 is the same as that of the first embodiment. In this embodiment, the operation of changing the bending state of the speaker unit 3 shown in FIG. 6 is different, and the user arbitrarily changes the bending state using the operation unit 7, and the center speaker device 1 according to the bending state. Sets the sound field. FIG. 12 shows a flowchart of an operation for changing the bending state of the speaker unit 3 in this embodiment. The flowchart shown in FIG. 7 is executed by the CPU 5.

  The flowchart shown in FIG. 12 will be described. First, in step S201, it is determined whether or not the speaker unit driving unit 4 is operating. If it is operating, the process proceeds to step S202 (in the case of YES), and if not (in the case of NO), the process proceeds to step S211. move on. Whether the speaker unit driving unit 4 is operating is provided, for example, by providing a sensor or the like for detecting the position of each moving unit 22 to detect whether or not it is moving according to the position, the amount of movement, and the like. It may be determined whether or not is operating.

  Next, in step S202, a bending state determination process is performed, and the process proceeds to step S203. In the bending state determination process, as a result of step S201, it is determined which of the connecting portions 101 to 106 is rotating, that is, which piston portion 20 is operating. The determination result is stored in the CPU 5.

  Next, in step S203, as a result of the determination in step S202, it is determined whether any one of the connecting portions 101, 102, 103 is moving (rotating) or not (YES). If YES), the process proceeds to step S204, and if not (NO), the process proceeds to step S205.

  Next, in step S204, if the connecting portion 101 is moving, the sound field is adjusted to the driver seat A, and if the connecting portion 102 or 103 is moving, the passenger seat B is also considered while matching the driver seat A. Set to sound field. In the case of this step, when the connecting portion 101 is moving, since the state is as shown in FIG. 8, a sound field that matches the driver's seat A is set as in the first embodiment. Further, when the connecting portion 102 or 103 is moving, although the configuration is similar to that in FIG. 8, there are a plurality of speaker devices 9 facing the passenger seat B side. The delay by the time alignment function that takes into account the sound from

  Next, in step S205, as a result of the determination in step S202, it is determined whether or not any one of the connecting portions 104, 105, and 106 is moving (rotating). If YES, the process proceeds to step S206, and if not (NO), the process proceeds to step S207.

  Next, in step S206, when the connecting portion 106 is moving, the sound field is adjusted to the passenger seat B, and when the connecting portion 104 or 105 is moving, the driver seat A is also considered while adjusting to the passenger seat B. Set to sound field. In the case of this step, when the connecting portion 106 is moving, since the state is as shown in FIG. 9, a sound field that matches the passenger seat B is set as in the first embodiment. Further, when the connecting portion 104 or 105 is moving, although the configuration is similar to that of FIG. 9, there are a plurality of speaker devices 9 facing the driver seat A side. The delay by the time alignment function that takes into account the sound from

  Next, in step S207, as a result of the determination in step S202, it is determined whether or not both of the connecting portions 103 and 104 are moving (rotating). If they are moving (YES), step S208 is performed. If not (NO), the process proceeds to step S209.

  Next, in step S208, a sound field is set for both the driver seat A and the passenger seat B. In the case of this step, since the state is as shown in FIG. 10, the sound field according to the driver seat A and the passenger seat B is set as in the first embodiment.

  Next, in step S209, as a result of the determination in step S202, it is determined whether or not both of the connecting portions 102 and 105 are moving (rotating). If they are moving (in the case of YES), step S210 is performed. If not (NO), the process ends.

  Next, in step S210, a sound field is set for all seats. In the case of this step, since it is in a state as shown in FIG. 11, a sound field adapted to all seats is set as in the first embodiment.

  On the other hand, in step S211, since the speaker unit driving unit 4 is not operating, the process is terminated without performing automatic sound field setting.

  According to the present embodiment, even when the user arbitrarily changes the bending state of the speaker unit 3 using the operation unit 7, the sound field can be set according to the bending state. The sound field can be optimized according to the

  Next, a center speaker device 1 according to a third embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

  This embodiment is different from the first and second embodiments in that the source content input to the center speaker device 1 is determined and the speaker unit 3 is bent based on the determination result.

  In the present embodiment, the audio processing unit 6 as the source discriminating unit discriminates the source information (reproduction source information) input to the speaker unit 3 and outputs it to the CPU 5. This source information is determined from the switching information of a device to which the center speaker device 1 such as a television, DVD or CD is connected, and the source contents such as a music program or a news program, and is output to the CPU 5. The device switching information may be acquired from operation information such as the operation unit 7 or a switching signal may be acquired from the outside. The source content may be acquired from, for example, a digital terrestrial broadcast program guide or a database on an external network such as the Internet in the case of a CD or DVD.

  The bending operation of the speaker unit 3 in this embodiment will be described with reference to the flowcharts of FIGS. The flowcharts of FIGS. 13 and 14 are executed by the CPU 5.

  First, in step S301, it is determined whether or not the playback source includes video. If the playback source includes video (YES), the process proceeds to step S302. If not (NO), the process proceeds to step S304. Whether or not a video is included may be determined, for example, if the switched source is a television or a DVD.

  Next, in step S302, it is determined whether or not the playback source is a music program or music software. If the playback source is a music program or music software (YES), the process proceeds to step S304; otherwise (NO). ) Proceeds to step S303. As described above, this step is determined by acquiring information from, for example, a digital terrestrial broadcast program guide or a database on an external network.

  Next, in step S303, the speaker position is set to CENTER-oriented speaker, and the process ends. The CENTER-oriented speaker position indicates a state in which sound is emitted without being biased to the right or left side of the center speaker device 1 of the center speaker device 1 in the bent state of the speaker unit 3, for example, as shown in FIG. Form like this. Of course, when the configuration shown in FIG. 11 is used, the sound field may be set to a sound field suitable for all seats as in the first embodiment. That is, the bending state of the plurality of speakers is changed based on the determination result of the source determination unit.

  In step S304, sound pressure interlocking speaker driving processing is performed. The operation of the sound pressure interlocking speaker driving process will be described with reference to the flowchart of FIG.

  First, in step S401, the bass component of the reproduced sound is extracted, and the process proceeds to step S402. The bass component of the reproduced sound is extracted by the audio processing unit 6 and its sound pressure level is acquired.

  Next, in step S402, the range in which the speaker unit 3 is pushed to the front is set and driven according to the sound pressure level of the extracted bass component. In this step, as shown in FIG. 15, the loudspeaker unit drive unit 4 is instructed to push out largely when the sound pressure level of the low sound component is large and push out small when the sound pressure level of the low sound component is small. That is, the amount by which the speaker unit 3 is pushed out from the main body 2 (the amount by which the moving unit 22 protrudes from the main body 2) increases or decreases in accordance with the increase or decrease in the bass component of music.

  According to the present embodiment, when the reproduction source input to the center speaker device 1 is music, the amount by which the speaker unit 3 is pushed out from the main body unit 2 is increased or decreased according to the sound pressure level of the low-frequency component. In this case, since CENTER is emphasized, in the case of music, the speaker unit 3 operates in accordance with the music and the appearance can be enjoyed. In the case other than music, a sound field suitable for a source other than music can be set.

  Note that the third embodiment may be combined with the first and second embodiments. In other words, fine adjustment may be performed based on the source information after the bending state is instructed according to the boarding position or the setting by the user. In this case, for example, step S303 may be a position in accordance with the boarding position or the setting by the user, not the speaker position with an emphasis on CENTER. In addition, the range in which the speaker unit 3 is pushed out in the sound pressure-linked speaker driving process is changed by pushing out (bending) the piston unit 20 (moving unit 22) in accordance with the boarding position or the setting by the user. ).

  In the third embodiment, the sound pressure interlocking speaker driving process is performed in the case of music, but may be performed in another source. In that case, the frequency at which the sound pressure is extracted may be set for each source, or the overall sound pressure may be viewed.

  Further, although the above-described center speaker device 1 has been input from the outside as a playback source, it may be configured as a playback device that includes a nonvolatile memory, stores music data, etc. in the nonvolatile memory, and plays it back. Alternatively, the center speaker device 1 may be provided as a part of a car navigation system or a part of home appliances. That is, you may provide in an electronic device.

  According to the embodiment described above, the following center speaker device 1 is obtained.

(Supplementary note) A center speaker device 1 including a plurality of speaker devices 9,
A connecting portion 10 for connecting a plurality of speaker devices 9 so as to be able to bend each other;
A speaker unit driving unit 4 for changing a bending state between the plurality of speakers 9 in the connecting unit 10;
A CPU 5 for instructing the speaker unit driving unit 4 to bend between a plurality of speaker devices 9 in the connecting unit 10;
A center speaker device 1 comprising:

  According to the center speaker device 1, if the CPU 5 is instructed in the direction in which directivity is desired and the bending state of the plurality of speaker devices 9 connected by the speaker unit driving unit 4 is changed, the directivity can be set in any direction. Can be switched. Moreover, if it is bent in a substantially mountain shape, directivity can be given in a plurality of directions.

  In addition, the Example mentioned above only showed the typical form of this invention, and this invention is not limited to an Example. That is, various modifications can be made without departing from the scope of the present invention.

1 Center speaker device (acoustic device)
2 Body 2a Front (one surface)
3 Speaker unit 4 Speaker unit driving unit (changing means)
5 CPU (bending state instruction means, detection means)
6 Audio processing unit (sound field setting means, source discrimination means)
9 Speaker device (speaker)
10 Connecting part (connecting means)
11 Movable part (moving means)
20 Piston part (extrusion means)

Claims (8)

An audio device comprising a plurality of speakers,
Connecting means for connecting the plurality of speakers so as to be able to bend each other;
Changing means for changing a bending state between the plurality of speakers in the connecting means;
Bending state indicating means for instructing the bending means between the plurality of speakers in the connecting means to the changing means;
An acoustic device comprising:   2. The bending state instructing unit includes a detecting unit that detects a position of a user, and instructs the changing unit to indicate a bending state of the plurality of speakers based on a detection result of the detecting unit. The acoustic device described in 1.   The acoustic apparatus according to claim 1, further comprising: a sound field setting unit that sets a sound field output from the plurality of speakers based on an instruction from the bending state instruction unit.   Source discriminating means for discriminating the contents of the input audio source, wherein the bending state instructing means instructs the changing means to the bending state of the plurality of speakers based on the discrimination result of the source discriminating means. The acoustic device according to any one of claims 1 to 3.   5. The sound according to claim 1, wherein the sound field setting unit sets a sound field output from the plurality of speakers based on a determination result of the source determination unit. apparatus.   The source discrimination means extracts the sound pressure of the input sound source, and the bending state instruction means instructs the changing means to change the bending state of the speaker in accordance with the sound pressure. The acoustic device according to claim 4 or 5. A plurality of speakers connected by the connecting means are installed in a row on one surface of the main body,
The changing means is provided corresponding to the connecting means, and provided on the one surface, the moving means for allowing both ends of the plurality of speakers to be movable in the connecting direction of the plurality of speakers on the one surface. 7. Extrusion means for changing the bent state by extruding the connecting means so as to be movable inward and outward of the main body through the formed opening. The acoustic device described.   An electronic apparatus comprising the acoustic device according to claim 1.

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