WO2021192517A1 - Vibration system, vibration method, vibration program, and storage medium - Google Patents

Vibration system, vibration method, vibration program, and storage medium Download PDF

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Publication number
WO2021192517A1
WO2021192517A1 PCT/JP2021/000983 JP2021000983W WO2021192517A1 WO 2021192517 A1 WO2021192517 A1 WO 2021192517A1 JP 2021000983 W JP2021000983 W JP 2021000983W WO 2021192517 A1 WO2021192517 A1 WO 2021192517A1
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WIPO (PCT)
Prior art keywords
sound
sound collection
collection result
vibration
parameter
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PCT/JP2021/000983
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French (fr)
Japanese (ja)
Inventor
洋人 河内
宣昭 田上
久司 大和田
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パイオニア株式会社
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Publication of WO2021192517A1 publication Critical patent/WO2021192517A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

Definitions

  • the present invention relates to a vibration system, a vibration method, a vibration program, and a storage medium that radiate sound by transmitting vibration to an object to be attached by a vibrator.
  • the desired sound can be obtained, for example, the sound quality of the radiated sound is biased to the treble side or the bass side, or the volume is generally insufficient. It may not be. Therefore, in order to deal with such a case, it is conceivable to collect the sound actually radiated by the vibrator and adjust the sound radiated by the vibrator based on the sound collection result.
  • the subject of the present invention is to provide a vibration system, a vibration method, a vibration program, and a storage medium capable of adjusting the sound while protecting privacy.
  • the vibration system of the present invention has a vibrator that emits sound by transmitting vibration based on a sound signal to an object to be attached, and a vibrator around the vibrator.
  • the sound collection result acquisition unit that acquires the sound collection result and the adjustment parameters for adjusting the sound radiated by the transducer are the sound signal and the instantaneous sound collection result over a short period of time that cannot be discriminated as sound.
  • the vibration method of the present invention is a collection of sounds around a vibrator that emits sound by transmitting vibration based on a sound signal to an object to be attached.
  • the sound collection result acquisition process for acquiring the sound result and the adjustment parameter for adjusting the sound radiated by the vibrator are determined by the sound signal and the instantaneous sound collection result over a short period of time that cannot be discriminated as the sound. It is characterized by including a parameter acquisition step of acquiring a plurality of sound collection results collected at discrete times and an adjustment step of adjusting the sound emitted by the vibrator using the adjustment parameters. do.
  • the vibration program of the present invention is characterized in that the above-mentioned vibration method is executed by a computer.
  • the storage medium of the present invention is characterized in that the above-mentioned vibration program is stored.
  • FIG. 1 is a schematic view showing a first application example to which a vibration system for obtaining sound using a vibrator is applied. It is external perspective view of the vibrator which is schematically shown in FIG. It is a schematic diagram which shows the 2nd application example of a vibration system. It is a schematic diagram which shows the 3rd application example of a vibration system. It is a schematic diagram which shows the 4th application example of a vibration system. It is a schematic block diagram which shows the functional block in the vibration system shown in FIGS. 1 to 5. It is a flowchart which shows the processing flow of the vibration method executed by the vibration system shown in FIG. It is a figure which shows the modification of the embodiment shown in FIGS. 1 to 7 by the function block diagram of the modification corresponding to the function block diagram of FIG.
  • the vibration system includes a vibrator, a sound collection result acquisition unit, a parameter acquisition unit, and an adjustment unit.
  • the vibrator radiates sound by transmitting vibration based on a sound signal to the object to be attached.
  • the sound collection result acquisition unit acquires the sound collection result of the sound around the vibrator.
  • the parameter acquisition unit collects a plurality of adjustment parameters for adjusting the sound emitted by the vibrator, such as a sound signal and a plurality of instantaneous sound collection results over a short period of time that cannot be discriminated as voice, with a predetermined discrete time. Obtained based on the sound collection result group.
  • the adjusting unit adjusts the sound radiated by the vibrator using the adjustment parameters.
  • the sound collection result group used for acquiring the adjustment parameter is a collection of a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as voice, at a predetermined discrete time. .. Then, it is extremely difficult to grasp the conversation content of the user from such a sound collection result group. That is, according to the vibration system described above, the sound can be adjusted while protecting privacy.
  • the vibration system of the present embodiment may be a system in which the parameter acquisition unit acquires adjustment parameters by performing calculation processing based on the sound signal and the sound collection result group.
  • the entire system including the calculation of parameters can be integrated in the vicinity of the object to be attached, so that the system configuration can be simplified and the cost etc. can be reduced.
  • the calculation process of the adjustment parameter based on the sound signal and the sound collection result group may be executed in the server device connected to the predetermined communication network.
  • the parameter acquisition unit sends a sound signal and a sound collection result group to the server device via the communication network, and receives the calculation result of the server device via the communication network to acquire the adjustment parameter.
  • the parameter calculation is executed by the server device having a sufficient processing capacity, and the parameter acquisition unit only receives the calculation result. Therefore, it is possible to construct a system in which the processing load can be further suppressed. can.
  • the vibration system of the present embodiment further includes a rearrangement processing unit that randomly rearranges the arrangement order of a plurality of instantaneous sound collection results arranged in the sound collection order to generate a sound collection result group. Then, the parameter acquisition unit acquires the adjustment parameter based on the sound signal and the sound collection result group generated by the rearrangement processing unit.
  • the order of a plurality of instantaneous sound collection results is irregularly rearranged to generate a sound collection result group, and it is difficult to grasp the conversation content of the user from the sound collection result group. Is further increased, so privacy can be further protected.
  • the vibration system of the present embodiment further includes a sound collection result storage unit that stores the sound collection result group and can read the stored contents by the processing unit in the subsequent stage.
  • the parameter acquisition unit acquires the average value of the parameters individually calculated for each of the plurality of instantaneous sound collection results in the sound collection result group as the adjustment parameter.
  • the vibration method includes a sound collection result acquisition step, a parameter acquisition step, and an adjustment step.
  • the sound collection result acquisition step is a step of acquiring the sound collection result around the vibrator that radiates the sound by transmitting the vibration based on the sound signal to the object to be attached.
  • the parameter acquisition process a plurality of adjustment parameters for adjusting the sound radiated by the vibrator are collected at a predetermined discrete time, with sound signals and instantaneous sound collection results over a short period of time that cannot be discriminated as voice. This is a process of acquiring based on the sound collection result group.
  • the adjustment step is a step of adjusting the sound radiated by the vibrator using the adjustment parameters.
  • the adjustment parameters are acquired based on the sound collection result group, which is extremely difficult to grasp the conversation content of the user, so that the sound can be adjusted while protecting privacy. can.
  • the vibration program according to the embodiment of the present invention is a program in which the above-mentioned vibration method is executed by a computer.
  • the sound can be adjusted while protecting privacy by executing the above vibration method by a computer.
  • the storage medium according to the embodiment of the present invention is a medium that stores the above-mentioned vibration program.
  • the sound can be adjusted while protecting privacy by reading the above vibration program and executing the above vibration method by a computer based on the vibration program.
  • FIG. 1 is a schematic view showing a first application example to which a vibration system for obtaining sound using a vibrator is applied
  • FIG. 2 is an external perspective view of the vibrator schematically shown in FIG. be.
  • the vibration system 1 of this embodiment is applied to the guide sign A1 of the bus stop.
  • the vibration system 1 is a system that provides voice information regarding bus operation, various advertisements, and the like, and includes an oscillator 11 and a drive unit 12.
  • the vibration system 1 can also provide interactive information that answers the questions of the users of the bus stop by voice.
  • the vibrator 11 radiates sound by transmitting vibration to the object to be attached, and includes a vibration actuator 111, a signal wire 112, and an attachment portion 113.
  • the vibration actuator 111 is a portion where a sound signal as an electric signal representing sound is supplied via a signal wire 112 and vibrates by itself in response to the sound signal.
  • the signal wire 112 is an input line for inputting a sound signal from the outside to the vibration actuator 111.
  • the sticking portion 113 is a plate-shaped portion formed integrally with the vibrating actuator 111 and is stuck to the sticking object.
  • the drive unit 12 is wiredly connected to the vibrator 11 via a signal wire 112, and a built-in microcomputer executes a sound signal generation process or the like according to the provided information. Then, the drive unit 12 supplies the generated sound signal to the vibrator 11 to drive the vibrator 11 and radiate the sound to provide information by voice.
  • two microphones M1 are connected by wire to the drive unit 12 in order to contribute to the adjustment for the sound obtained by the vibrator 11. That is, in the vibration system 1 of the present embodiment, the sound actually radiated by the vibrator 11 is collected by the microphone M1, and in the drive unit 12, the sound signal supplied to the vibrator 11 is collected by the microphone M1. By adjusting based on the sound result, the sound radiated by the vibrator 11 is adjusted.
  • the microphone M1 is also used for interactive information provision.
  • voice recognition processing is performed on the user's voice collected by the microphone M1, the question from the user is recognized, and a sound signal representing the answer voice to the question is generated. By driving the vibrator 11 based on this sound signal, a voice answer to the user's question is made.
  • the vibrator 11 is attached to the center of the back surface of the circular flat plate-shaped stop name display plate A11 on the guide sign A1, and the two microphones M1 are attached to the route map / timetable display plate A12. Is fixed, and the drive unit 12 is fixed to the base A13.
  • the vibration is transmitted to the stop name display plate A11, which is the object to which the vibrator 11 is attached, and the sound is radiated with the stop name display plate A11 as the main sounding unit.
  • FIG. 3 is a schematic diagram showing a second application example of the vibration system
  • FIG. 4 is a schematic diagram showing a third application example of the vibration system
  • FIG. 5 is a schematic diagram showing a fourth application example of the vibration system. It is a figure.
  • the second application example of FIG. 3 is an example in which the vibration system 1 is applied to the guide sign A2 of a park or the like.
  • the vibrator 11 is attached to the center of the back surface of the rectangular flat plate-shaped guide display plate A21 for displaying a map or the like.
  • one microphone M1 is fixed to each of the two columns A22 supporting the guide display board A21, and the drive unit 12 is fixed to the root of one column A22.
  • the third application example of FIG. 4 is an example in which the vibration system 1 is applied to the A-type stand signboard A3 for store guidance of a coffee shop or the like.
  • the vibrator 11 is attached to the center of the back surface of one of the two rectangular flat plate-shaped guide display plates A31 that display various store information.
  • one microphone M1 is fixed at a position below the vibrator 11 on the back surface of the same guide display plate A21, and at a position below the back surface of the guide display plate A31 on the side opposite to the mounting side of the vibrator 11 and the microphone M1.
  • the drive unit 12 is fixed.
  • the fourth application example of FIG. 5 is an example in which the vibration system 1 is applied to a guide signboard A4 that imitates the shape of an animal installed in a zoo or the like.
  • the vibrator 11, the microphone M1, and the drive unit 12 are all attached to the back surface of one guide signboard A4.
  • the vibrator 11 is attached to a position above the back surface of the guide signboard A4, and one microphone M1 is fixed to the position below the guide sign A4.
  • the drive unit 12 is fixed at the lowermost position on the back surface of the guide signboard A4.
  • the plate-shaped portion to which the vibrator 11 is attached is mainly pronounced. Sound is radiated as a part. As a result, various guidance information is provided by voice, and the user's question is answered by voice.
  • Such a vibration system 1 has the following functional blocks.
  • FIG. 6 is a schematic block diagram showing functional blocks in the vibration system shown in FIGS. 1 to 5.
  • the vibration system 1 has the vibrator 11, the sound collection result acquisition unit 121, the rearrangement processing unit 122, the sound collection result storage unit 123, the parameter acquisition unit 124, the parameter storage unit 125, the sound signal generation unit 126, and the sound signal generation unit 126 as functional blocks.
  • the adjusting unit 127 is provided. Since the vibrator 11 as a functional block referred to here is the same as the vibrator 11 as hardware shown in FIGS. 1 to 5, the same reference numerals are given without particularly distinguishing between the two. Will be explained.
  • the sound collection result acquisition unit 121, the rearrangement processing unit 122, the parameter acquisition unit 124, the sound signal generation unit 126, and the adjustment unit 127 operate the microcomputer and the like in the drive unit 12. Constructed by.
  • the sound collection result storage unit 123 and the parameter storage unit 125 are constructed by one storage area in the memory mounted on the drive unit 12.
  • the vibrator 11 radiates sound by transmitting vibration based on a sound signal to the object to be attached as described above.
  • the sound collection result acquisition unit 121 acquires the sound collection result when the sound around the vibrator 11 is collected by the microphone M1 from the microphone M1. The acquisition at this time is performed from a predetermined time before the vibrator 11 emits a sound such as a guidance voice based on the sound signal.
  • the sound collection result when the sound is radiated is used for acquiring both the sound quality parameter and the volume parameter described later, and the sound collection result before the sound is radiated is used for the acquisition of the volume parameter.
  • the rearrangement processing unit 122 extracts a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as voice, from the sound collection results of the sound collection result acquisition unit 121 at a predetermined discrete time, and the remaining sound collection results. Discard. Specifically, sampling of an extremely short-time instantaneous sound collection result such as 0.1 second is executed at 0.1 second intervals for 100 seconds, leaving one instantaneous sound collection result per second and discarding the others. As a result, processing such as extracting 100 instantaneous sound collection results with a discrete time of 0.9 seconds is performed.
  • the rearrangement processing unit 122 was supplied to the vibrator 11 at the time of sound collection, which was the source of extraction of the sound collection result group, and radiated a sound such as a guidance voice in preparation for the calculation of the adjustment parameter later.
  • the same extraction is performed for the sound signal. That is, in a state where the sound signal is synchronized with the sound collection result of the extraction source, a plurality of short-time instantaneous sound signals, which are the same as the instantaneous sound collection result, are extracted from this sound signal with the same discrete time as the instantaneous sound collection result. do.
  • the instantaneous sound collection result and the instantaneous sound signal extracted in this way are both arranged in the order of sound collection, and the rearrangement processing unit 122 sets the order of the instantaneous sound collection result and the instantaneous sound signal. Sort irregularly while maintaining synchronization with.
  • a sound collection result group which is a set of instantaneous sound collection results before sound emission
  • a sound signal group which is a set of instantaneous sound signals during sound emission
  • the sound collection result storage unit 123 stores the sound collection result group and the sound signal group generated by the rearrangement processing unit 122 in a state of being synchronized with each other, and the stored contents are stored by the parameter acquisition unit 124 which is the subsequent processing unit. It is a part that can be read.
  • the parameter acquisition unit 124 bases the adjustment parameters for adjusting the sound radiated by the vibrator 11 on the sound collection result group and the sound signal group generated by the rearrangement processing unit 122 and stored in the sound collection result storage unit 123. To get.
  • the drive unit 12 is connected to the server device SV1 via a predetermined communication network N1. Then, in this server device SV1, the calculation process of the adjustment parameter based on the sound signal (here, the above-mentioned sound signal group) and the sound collection result group is executed.
  • the parameter acquisition unit 124 sends the sound collection result group and the sound signal group to the server device SV1 via the communication network N1 while maintaining mutual synchronization, and sends the calculation result of the server device SV1 to the server device SV1 via the communication network N1. Get the adjustment parameters by receiving.
  • the parameter acquisition unit 124 acquires a sound quality parameter for adjusting the sound quality and a volume parameter for adjusting the volume. That is, in the server device SV1, these parameters are calculated based on the sound collection result group and the sound signal group.
  • the sound quality parameter is calculated using the sound collection result group and the sound signal group during sound radiation. Then, in the calculation of the sound quality parameter, first, the following gain set is set for each combination of the instantaneous sound collection result forming the sound collection result group and the instantaneous sound signal forming the sound signal group that are synchronized with each other. Is required. That is, after synchronizing the instantaneous sound collection result of each set and the instantaneous sound signal with each other, the difference is obtained by comparing each of the plurality of frequency bands, and the gain for reducing the difference is calculated. In this way, a plurality of gain sets are required for each set of the instantaneous sound collection result and the instantaneous sound signal.
  • the average value of the corresponding frequency bands is calculated between a plurality of sets of gains. For example, when 100 sets of gains are obtained, the average value of 100 gains is obtained for each frequency band. The set of the average values of the gains obtained for each frequency band in this way becomes the sound quality parameter.
  • the volume parameter For the volume parameter, the sound collection result group and the sound signal group during sound emission, and the sound collection result group before sound emission corresponding to the background sound when the vibrator 11 does not emit sound are used. Then, in the calculation of the volume parameter, first, the noise level at the time of sound emission is calculated individually for each of the instantaneous sound collection results, and the optimum volume corresponding to each noise level is calculated. This noise level and volume are based on the instantaneous sound collection result that forms the sound collection result group before sound emission, the instantaneous sound collection result that forms the sound collection result group during sound emission, and the instantaneous sound signal that forms the sound signal group. Calculated. Then, the average value of the volumes calculated in the same number as the instantaneous sound collection results forming the sound collection result group at the time of sound emission is calculated as the volume parameter.
  • the parameter acquisition unit 124 receives the sound quality parameter and the volume parameter calculated in this way in the server device SV1 from the server device SV1.
  • the parameter storage unit 125 stores the sound quality parameter and the volume parameter acquired by the parameter acquisition unit 124.
  • the sound signal generation unit 126 generates sound signals representing various guidance voices. Further, in the present embodiment, in order to provide information in an interactive format, the sound signal generation unit 126 collects sound by the microphone M1 and obtains a voice for the user's question regarding the sound collection result acquisition unit. The user's question is grasped by the recognition process. Then, the sound signal generation unit 126 generates a sound signal representing the answer voice to the question.
  • the adjustment unit 127 adjusts the sound signal generated by the sound signal generation unit 126 by using the sound quality parameter and the volume parameter acquired by the parameter acquisition unit 124 and stored in the parameter storage unit 125, and the adjusted sound signal. Is supplied to the vibrator 11. By adjusting the sound signal and supplying the adjusted sound signal, the adjusting unit 127 adjusts the sound radiated by the vibrator 11.
  • FIG. 7 is a flowchart showing the processing flow of the vibration method executed by the vibration system shown in FIG.
  • the flowchart shown in FIG. 7 includes a parameter acquisition flow for acquiring and storing / updating adjustment parameters, a voice radiation flow for radiating a guidance voice at a predetermined timing, and a voice for answering a user's question. It consists of two flows. These two flows start when the drive unit 12 is powered on and are executed in parallel with each other.
  • the rearrangement processing step of generating the sound signal group is executed by the rearrangement processing unit 122 (step S12).
  • the sound collection result storage unit 123 executes a sound collection result storage step in which the generated sound collection result group is stored in a state of maintaining synchronization with the sound signal group (step S12). Then, the stored sound collection result group and sound signal group are sent to the server device SV1, and the parameter acquisition step of receiving the sound quality parameter and the volume parameter calculated based on these is executed by the parameter acquisition unit 124 (step S14). ). After that, the parameter storage unit 125 executes an update step of updating the stored contents with the acquired sound quality parameter and volume parameter (step S15).
  • the default volume parameter and sound quality parameter are stored in the parameter storage unit 125 at the initial stage when the vibration system 1 is installed at the installation site, and the update step (step S15) after the installation causes the parameter storage unit 125 to store the default volume parameter and sound quality parameter. Each parameter will be updated. After the end of this update step (step S15), the process returns to the sound collection result acquisition step (step S11), and the subsequent processes are repeated.
  • the sound signal generation unit 126 executes a sound signal generation step of generating a sound signal representing the sound radiated by the vibrator 11 (step S16).
  • this sound signal generation step step S16
  • sound signals representing various guidance voices are generated, a user's question is grasped by voice recognition processing, and a sound signal representing a response voice to the question is generated.
  • the adjusting unit 127 executes the adjusting step (step S17).
  • the sound produced by the vibrator 11 is adjusted using the volume parameter and the sound quality parameter stored in the parameter storage unit 125 at that time. That is, the sound signal generated in the sound signal generation step (step S16) is adjusted by various parameters, and the adjusted sound signal is supplied to the vibrator 11, so that the sound to be radiated is adjusted. If the update step (step S15) has not been executed for the stored contents of the parameter storage unit 125 at the time of this adjustment step (step S17), the default parameters are used. On the other hand, if the update step (step S15) has been executed, the updated parameters are used.
  • step S15 when the update step (step S15) is executed during the execution of the adjustment step (step S17), that is, while the sound is radiated by the vibrator 11, the sound radiated after that is the latest after the update.
  • the parameters will be used and adjusted.
  • step S17 including the sound radiation by the vibrator 11 is completed, the process returns to the sound signal generation step (step S16) to prepare for the next sound radiation.
  • a vibration program for executing the vibration method shown in the flowchart of FIG. 7 by a computer is stored in a storage medium mounted on the drive unit 12.
  • the storage medium for storing the vibration program is not limited to the storage medium mounted on the drive unit 12, and may be a storage medium mounted on a PC or the like connected to the drive unit 12, or may be known. It may be a carrying storage medium or the like.
  • the sound collection result group used for acquiring the adjustment parameters is an instantaneous sound collection over a short period of time that cannot be discriminated as voice. A plurality of results are collected at a predetermined discrete time. Then, it is extremely difficult to grasp the conversation content of the user from such a sound collection result group. That is, according to the vibration system 1 described above, the sound can be adjusted while protecting privacy.
  • the parameter acquisition unit 124 sends a sound signal and a sound collection result group to the server device SV1 via the communication network N1, and calculates the calculation result in the server device SV1 via the communication network N1. Get the adjustment parameters by receiving.
  • the parameter calculation is executed by the server device SV1 having a sufficient processing capacity, and the parameter acquisition unit 124 only receives the calculation result, so that a system in which the processing load can be further suppressed is constructed. be able to.
  • the vibration system 1 of the present embodiment further includes a rearrangement processing unit 122 that randomly rearranges the arrangement order of a plurality of instantaneous sound collection results arranged in the sound collection order to generate a sound collection result group.
  • a rearrangement processing unit 122 that randomly rearranges the arrangement order of a plurality of instantaneous sound collection results arranged in the sound collection order to generate a sound collection result group.
  • the vibration system 1 of the present embodiment further includes a sound collection result storage unit 123 that stores the sound collection result group and can read the stored contents by the processing unit in the subsequent stage.
  • a sound collection result storage unit 123 that stores the sound collection result group and can read the stored contents by the processing unit in the subsequent stage.
  • the parameter acquisition unit 124 acquires the average value of the parameters individually calculated for each of the plurality of instantaneous sound collection results in the sound collection result group as the adjustment parameter. According to this configuration, even if the individually calculated parameters vary slightly, it is possible to obtain highly accurate adjustment parameters by obtaining the average value.
  • FIGS. 1 to 7 a modified example of the embodiment shown in FIGS. 1 to 7 will be described with reference to the functional block diagram of the modified example corresponding to the functional block diagram of FIG.
  • FIG. 8 is a diagram showing a modified example of the embodiment shown in FIGS. 1 to 7 in a functional block diagram of the modified example corresponding to the functional block diagram of FIG.
  • components equivalent to the components shown in FIG. 6 are designated by the same reference numerals as those in FIG. 6, and duplicate description of these equivalent components will be omitted below.
  • the parameter acquisition unit 224 in the drive unit 22 is different from the above-described embodiment.
  • the drive unit 22 is not connected to the server device SV1, and the parameter acquisition unit 224 acquires the sound quality parameter and the volume parameter by performing the calculation process based on the sound signal and the sound collection result by itself. It has become.
  • the parameter acquisition unit 224 acquires the sound quality parameter and the volume parameter based on the sound collection result group which is a set of the instantaneous sound collection results and the sound signal group which is a set of the instantaneous sound signals.
  • the points are the same as those in the above-described embodiment.
  • the sound quality parameter and the volume parameter are acquired based on the sound collection result group, which is extremely difficult to grasp the conversation content of the user, so the sound is adjusted while protecting privacy. It goes without saying that you can do it.
  • the sound quality parameter and the volume parameter are acquired by the parameter acquisition unit 224 performing the calculation process based on the sound signal group and the sound collection result group by itself.
  • the entire system including the calculation of parameters can be integrated in the vicinity of the object to be attached, so that the system configuration can be simplified and the cost or the like can be reduced.
  • the present invention is not limited to the examples and modifications described above, but includes other configurations that can achieve the object of the present invention, and the following modifications are also included in the present invention. ..
  • the vibration system 1 in which the sound collection result by two or one microphone M1 is used not only for acquiring sound quality parameters and volume parameters but also for providing information in an interactive format. , 2 are illustrated.
  • the vibration system is not limited to these, and may be configured not to provide information in an interactive manner.
  • the number of connected microphones M1 is not limited to two or one, and an arbitrary number of microphones M1 may be connected according to the installation situation of the vibration system.
  • vibration systems 1 and 2 provided with one vibrator 11 are exemplified.
  • the vibration system is not limited to these, and an arbitrary number of vibrators may be provided according to the installation situation of the vibration system.
  • vibration systems 1 and 2 that acquire sound quality parameters and volume parameters as adjustment parameters are exemplified.
  • the vibration system is not limited to these, and only one of them may be acquired.
  • the parameter acquisition unit 124 that acquires the calculation results of the sound quality parameter and the volume parameter in the server device SV1 is exemplified.
  • the parameter acquisition unit 224 that calculates the sound quality parameter and the volume parameter by itself is exemplified.
  • the parameter acquisition unit is not limited to these, and does not ask a specific acquisition mode as long as it acquires various parameters based on the sound signal and the sound collection result.
  • a highly versatile system can be constructed by configuring the server device SV1 to acquire sound quality parameters and volume parameters. Further, as described above, the system configuration can be simplified and the cost or the like can be reduced by adopting the configuration in which the sound quality parameter and the volume parameter are calculated by oneself.
  • the vibration systems 1 and 2 provided with the rearrangement processing unit 122 that randomly rearranges the arrangement order of the instantaneous sound collection results to generate the sound collection result group are exemplified.
  • the vibration system is not limited to this, and the parameters may be acquired by using the instantaneous sound collection results arranged in the sound collection order as they are without performing such rearrangement.
  • the sound signal may be used as it is for acquiring the adjustment parameter while maintaining the synchronization with the instantaneous sound collection result without extracting the instantaneous sound signal.
  • privacy can be further protected by rearranging the results of instantaneous sound collection.
  • the vibration systems 1 and 2 provided with the sound collection result storage unit 123 for storing the sound collection result group and reading the stored contents by the processing unit in the subsequent stage are exemplified.
  • the vibration system is not limited to this, and the sound collection result group may not be stored and may be discarded immediately after the parameter is acquired.
  • the sound collection result group may not be stored and may be discarded immediately after the parameter is acquired.
  • by storing the sound collection result group as the source of parameter acquisition for example, it can contribute to maintenance at a later date.
  • the vibration systems 1 and 2 in which the sound quality parameter and the volume parameter are acquired as the average value of the parameters calculated individually for each of the plurality of instantaneous sound collection results in the sound collection result group are exemplified.
  • the vibration system is not limited to this, and for example, representative values such as the maximum value and the minimum value among the individually calculated parameters may be acquired as the sound quality parameter and the volume parameter.
  • a highly accurate parameter can be obtained by obtaining the average value.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
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Abstract

The present invention adjusts sound while protecting privacy. A vibration system (1) is characterized by including: an oscillator (11) that transmits, to an object to be adhered, vibrations based on sound signals, thereby causing sound to radiate; a sound collection result acquisition unit (121) that acquires a result of collecting sound in the vicinity of the oscillator (11); a parameter acquisition unit (124) that acquires an adjustment parameter for adjusting the sound radiated by the oscillator (11), on the basis of the sound signal and a sound collection result group in which a plurality of instantaneous sound collection results, during short amounts of time indistinguishable as sound, are collected at a predetermined discrete time interval; and an adjustment unit (127) that uses the adjustment parameter to adjust the sound radiated by the oscillator (11).

Description

振動システム、振動方法、振動プログラム、及び記憶媒体Vibration systems, vibration methods, vibration programs, and storage media
　本発明は、振動子によって貼付対象物に振動を伝達することで音を放射させる振動システム、振動方法、振動プログラム、及び記憶媒体に関する。 The present invention relates to a vibration system, a vibration method, a vibration program, and a storage medium that radiate sound by transmitting vibration to an object to be attached by a vibrator.
　従来、振動子によって貼付対象物に振動を伝達することで音を放射させる技術が提案されている（例えば、特許文献１参照。）。この技術では、人の出入りする部屋の壁面を振動子の貼付対象物とし、この壁面に振動を伝達させて部屋の内部に音を放射させることで好ましい音響空間を得ている。 Conventionally, a technique has been proposed in which sound is radiated by transmitting vibration to an object to be attached by a vibrator (see, for example, Patent Document 1). In this technology, the wall surface of a room where people enter and exit is the object to which the vibrator is attached, and vibration is transmitted to this wall surface to radiate sound inside the room, thereby obtaining a preferable acoustic space.
　ここで、貼付対象物に振動を伝達することで音を放射させる技術では、放射させる音について高音側や低音側に音質が偏ったり、総じて音量不足となったりする等、所望の音が得られない場合がある。そこで、このような場合に対応するべく、振動子が実際に放射させた音を集音し、その集音結果に基づいて、振動子が放射させる音を調整することが考えられる。 Here, in the technology of radiating sound by transmitting vibration to the object to be attached, the desired sound can be obtained, for example, the sound quality of the radiated sound is biased to the treble side or the bass side, or the volume is generally insufficient. It may not be. Therefore, in order to deal with such a case, it is conceivable to collect the sound actually radiated by the vibrator and adjust the sound radiated by the vibrator based on the sound collection result.
特開２０００－２２４６８０号公報Japanese Unexamined Patent Publication No. 2000-224680
　しかしながら、上記のような集音結果に基づいて調整する処理では、その集音結果にプライベートな会話等が含まれている可能性があり、プライバシー保護の観点から改善の余地が見られる。 However, in the process of adjusting based on the sound collection result as described above, there is a possibility that the sound collection result includes private conversations, etc., and there is room for improvement from the viewpoint of privacy protection.
　したがって、本発明の課題は、プライバシーを保護しつつ音を調整することができる振動システム、振動方法、振動プログラム、及び記憶媒体を提供すること等が一例として挙げられる。 Therefore, as an example, the subject of the present invention is to provide a vibration system, a vibration method, a vibration program, and a storage medium capable of adjusting the sound while protecting privacy.
　前述した課題を解決し目的を達成するために、本発明の振動システムは、貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる振動子と、前記振動子の周辺における音の集音結果を取得する集音結果取得部と、前記振動子が放射させる音を調整するための調整パラメータを、前記音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得するパラメータ取得部と、前記調整パラメータを用いて前記振動子が放射させる音を調整する調整部と、を備えたことを特徴とする。 In order to solve the above-mentioned problems and achieve the object, the vibration system of the present invention has a vibrator that emits sound by transmitting vibration based on a sound signal to an object to be attached, and a vibrator around the vibrator. The sound collection result acquisition unit that acquires the sound collection result and the adjustment parameters for adjusting the sound radiated by the transducer are the sound signal and the instantaneous sound collection result over a short period of time that cannot be discriminated as sound. Is provided with a parameter acquisition unit that acquires sound based on a plurality of sound collection result groups collected at a predetermined discrete time, and an adjustment unit that adjusts the sound emitted by the vibrator using the adjustment parameter. It is characterized by.
　また、前述した課題を解決し目的を達成するために、本発明の振動方法は、貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる振動子の周辺における音の集音結果を取得する集音結果取得工程と、前記振動子が放射させる音を調整するための調整パラメータを、前記音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得するパラメータ取得工程と、前記調整パラメータを用いて前記振動子が放射させる音を調整する調整工程と、を備えたことを特徴とする。 Further, in order to solve the above-mentioned problems and achieve the object, the vibration method of the present invention is a collection of sounds around a vibrator that emits sound by transmitting vibration based on a sound signal to an object to be attached. The sound collection result acquisition process for acquiring the sound result and the adjustment parameter for adjusting the sound radiated by the vibrator are determined by the sound signal and the instantaneous sound collection result over a short period of time that cannot be discriminated as the sound. It is characterized by including a parameter acquisition step of acquiring a plurality of sound collection results collected at discrete times and an adjustment step of adjusting the sound emitted by the vibrator using the adjustment parameters. do.
　また、前述した課題を解決し目的を達成するために、本発明の振動プログラムは、上述の振動方法を、コンピュータにより実行させることを特徴とする。 Further, in order to solve the above-mentioned problems and achieve the object, the vibration program of the present invention is characterized in that the above-mentioned vibration method is executed by a computer.
　また、前述した課題を解決し目的を達成するために、本発明の記憶媒体は、上述の振動プログラムを記憶したことを特徴とする。 Further, in order to solve the above-mentioned problems and achieve the object, the storage medium of the present invention is characterized in that the above-mentioned vibration program is stored.
図１は、振動子を用いて音を得る振動システムが適用された第１適用例を示す模式図である。FIG. 1 is a schematic view showing a first application example to which a vibration system for obtaining sound using a vibrator is applied. 図１に模式的に示されている振動子の外観斜視図である。It is external perspective view of the vibrator which is schematically shown in FIG. 振動システムの第２適用例を示す模式図である。It is a schematic diagram which shows the 2nd application example of a vibration system. 振動システムの第３適用例を示す模式図である。It is a schematic diagram which shows the 3rd application example of a vibration system. 振動システムの第４適用例を示す模式図である。It is a schematic diagram which shows the 4th application example of a vibration system. 図１～図５に示されている振動システムにおける機能ブロックを示す模式的なブロック図である。It is a schematic block diagram which shows the functional block in the vibration system shown in FIGS. 1 to 5. 図６に示されている振動システムで実行される振動方法の処理の流れを表すフローチャートである。It is a flowchart which shows the processing flow of the vibration method executed by the vibration system shown in FIG. 図１～図７に示されている実施例の変形例を、図６の機能ブロック図に対応する変形例の機能ブロック図で示す図である。It is a figure which shows the modification of the embodiment shown in FIGS. 1 to 7 by the function block diagram of the modification corresponding to the function block diagram of FIG.
　以下、本発明の実施形態を説明する。本発明の実施形態に係る振動システムは、振動子と、集音結果取得部と、パラメータ取得部と、調整部と、を備えている。振動子は、貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる。集音結果取得部は、振動子の周辺における音の集音結果を取得する。パラメータ取得部は、振動子が放射させる音を調整するための調整パラメータを、音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得する。調整部は、調整パラメータを用いて振動子が放射させる音を調整する。 Hereinafter, embodiments of the present invention will be described. The vibration system according to the embodiment of the present invention includes a vibrator, a sound collection result acquisition unit, a parameter acquisition unit, and an adjustment unit. The vibrator radiates sound by transmitting vibration based on a sound signal to the object to be attached. The sound collection result acquisition unit acquires the sound collection result of the sound around the vibrator. The parameter acquisition unit collects a plurality of adjustment parameters for adjusting the sound emitted by the vibrator, such as a sound signal and a plurality of instantaneous sound collection results over a short period of time that cannot be discriminated as voice, with a predetermined discrete time. Obtained based on the sound collection result group. The adjusting unit adjusts the sound radiated by the vibrator using the adjustment parameters.
　上記の振動システムによれば、調整パラメータの取得に用いられる集音結果群は、音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められたものである。そして、このような集音結果群から利用者の会話内容等を把握することは極めて困難である。つまり、上記の振動システムによれば、プライバシーを保護しつつ音を調整することができる。 According to the above-mentioned vibration system, the sound collection result group used for acquiring the adjustment parameter is a collection of a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as voice, at a predetermined discrete time. .. Then, it is extremely difficult to grasp the conversation content of the user from such a sound collection result group. That is, according to the vibration system described above, the sound can be adjusted while protecting privacy.
　ここで、本実施形態の振動システムは、パラメータ取得部が、音信号及び集音結果群に基づく算出処理を行うことで調整パラメータを取得するシステムとしてもよい。 Here, the vibration system of the present embodiment may be a system in which the parameter acquisition unit acquires adjustment parameters by performing calculation processing based on the sound signal and the sound collection result group.
　この構成によれば、パラメータの算出を含むシステム全体を貼付対象物の近傍に集約することができるので、システム構成を簡略化してコスト等を低減することができる。 According to this configuration, the entire system including the calculation of parameters can be integrated in the vicinity of the object to be attached, so that the system configuration can be simplified and the cost etc. can be reduced.
　あるいは、本実施形態の振動システムは、所定の通信ネットワークに接続されるサーバ装置において、音信号及び集音結果群に基づく調整パラメータの算出処理が実行されることとしてもよい。この場合、パラメータ取得部が、通信ネットワークを介してサーバ装置に音信号及び集音結果群を送り、当該サーバ装置での算出結果を、通信ネットワークを介して受け取ることで調整パラメータを取得するとなる。 Alternatively, in the vibration system of the present embodiment, the calculation process of the adjustment parameter based on the sound signal and the sound collection result group may be executed in the server device connected to the predetermined communication network. In this case, the parameter acquisition unit sends a sound signal and a sound collection result group to the server device via the communication network, and receives the calculation result of the server device via the communication network to acquire the adjustment parameter.
　この構成によれば、パラメータの算出が、処理能力に余裕のあるサーバ装置で実行され、パラメータ取得部はその算出結果を受け取るだけとなることから、より処理負担が抑えられるシステムを構築することができる。 According to this configuration, the parameter calculation is executed by the server device having a sufficient processing capacity, and the parameter acquisition unit only receives the calculation result. Therefore, it is possible to construct a system in which the processing load can be further suppressed. can.
　また、本実施形態の振動システムは、集音順に並ぶ複数の瞬時集音結果について、その並び順を不規則に並び替えて集音結果群を生成する並替え処理部を、更に備えている。そして、パラメータ取得部は、音信号、及び並替え処理部で生成された集音結果群に基づいて調整パラメータを取得することとなっている。 Further, the vibration system of the present embodiment further includes a rearrangement processing unit that randomly rearranges the arrangement order of a plurality of instantaneous sound collection results arranged in the sound collection order to generate a sound collection result group. Then, the parameter acquisition unit acquires the adjustment parameter based on the sound signal and the sound collection result group generated by the rearrangement processing unit.
　この構成によれば、複数の瞬時集音結果の並び順が不規則に並び替えられて集音結果群が生成され、集音結果群から利用者の会話内容等を把握することについての困難さが一層増すので、プライバシーを一層保護することができる。 According to this configuration, the order of a plurality of instantaneous sound collection results is irregularly rearranged to generate a sound collection result group, and it is difficult to grasp the conversation content of the user from the sound collection result group. Is further increased, so privacy can be further protected.
　また、本実施形態の振動システムは、集音結果群を記憶し、後段の処理部によって記憶内容を読み取られる集音結果記憶部を、を更に備えている。 Further, the vibration system of the present embodiment further includes a sound collection result storage unit that stores the sound collection result group and can read the stored contents by the processing unit in the subsequent stage.
　この構成によれば、会話内容等の把握が困難な集音結果群を記憶させることでプライバシーを保護しつつも、調整パラメータの取得の源泉が保存されることとなるので、例えば後日のメンテナンス等に資することができる。 According to this configuration, while protecting privacy by storing a group of sound collection results for which it is difficult to grasp the conversation content, etc., the source of acquisition of adjustment parameters is saved, so for example, maintenance at a later date, etc. Can contribute to.
　また、本実施形態では、パラメータ取得部が、集音結果群における複数の瞬時集音結果それぞれについて個別に算出されたパラメータの平均値を調整パラメータとして取得する。 Further, in the present embodiment, the parameter acquisition unit acquires the average value of the parameters individually calculated for each of the plurality of instantaneous sound collection results in the sound collection result group as the adjustment parameter.
　この構成によれば、個別に算出されたパラメータが多少ばらつくようなことがあっても、平均値を求めることで精度の高い調整パラメータを得ることができる。 According to this configuration, even if the individually calculated parameters vary slightly, it is possible to obtain highly accurate adjustment parameters by obtaining the average value.
　また、本発明の実施形態に係る振動方法は、集音結果取得工程と、パラメータ取得工程と、調整工程と、を備えている。集音結果取得工程は、貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる振動子の周辺における音の集音結果を取得する工程である。パラメータ取得工程は、振動子が放射させる音を調整するための調整パラメータを、音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得する工程である。調整工程は、調整パラメータを用いて振動子が放射させる音を調整する工程である。 Further, the vibration method according to the embodiment of the present invention includes a sound collection result acquisition step, a parameter acquisition step, and an adjustment step. The sound collection result acquisition step is a step of acquiring the sound collection result around the vibrator that radiates the sound by transmitting the vibration based on the sound signal to the object to be attached. In the parameter acquisition process, a plurality of adjustment parameters for adjusting the sound radiated by the vibrator are collected at a predetermined discrete time, with sound signals and instantaneous sound collection results over a short period of time that cannot be discriminated as voice. This is a process of acquiring based on the sound collection result group. The adjustment step is a step of adjusting the sound radiated by the vibrator using the adjustment parameters.
　上記の振動方法によれば、利用者の会話内容等を把握することは極めて困難な集音結果群に基づいて調整パラメータの取得が実行されるので、プライバシーを保護しつつ音を調整することができる。 According to the above vibration method, the adjustment parameters are acquired based on the sound collection result group, which is extremely difficult to grasp the conversation content of the user, so that the sound can be adjusted while protecting privacy. can.
　また、本発明の実施形態に係る振動プログラムは、上述の振動方法を、コンピュータにより実行させるプログラムとなっている。 Further, the vibration program according to the embodiment of the present invention is a program in which the above-mentioned vibration method is executed by a computer.
　上記の振動プログラムによれば、上述の振動方法をコンピュータにより実行させることで、プライバシーを保護しつつ音を調整することができる。 According to the above vibration program, the sound can be adjusted while protecting privacy by executing the above vibration method by a computer.
　また、本発明の実施形態に係る記憶媒体は、上述の振動プログラムを記憶した媒体となっている。 Further, the storage medium according to the embodiment of the present invention is a medium that stores the above-mentioned vibration program.
　上記の記憶媒体によれば、上述の振動プログラムを読み出し、当該振動プログラムに基づいて上述の振動方法をコンピュータにより実行させることで、プライバシーを保護しつつ音を調整することができる。 According to the above storage medium, the sound can be adjusted while protecting privacy by reading the above vibration program and executing the above vibration method by a computer based on the vibration program.
　以下、プライバシーを保護しつつ音を調整するという課題を解決するための実施例について図を参照して具体的に説明する。 Hereinafter, an example for solving the problem of adjusting the sound while protecting privacy will be specifically described with reference to the figure.
　図１は、振動子を用いて音を得る振動システムが適用された第１適用例を示す模式図であり、図２は、図１に模式的に示されている振動子の外観斜視図である。 FIG. 1 is a schematic view showing a first application example to which a vibration system for obtaining sound using a vibrator is applied, and FIG. 2 is an external perspective view of the vibrator schematically shown in FIG. be.
　図１に示されている第１適用例は、本実施例の振動システム１をバス停留所の案内標識Ａ１に適用したものである。振動システム１は、バスの運行や各種広告等に関する音声での情報提供を行うシステムとなっており、振動子１１と、駆動ユニット１２と、を備えている。また、振動システム１では、バス停留所の利用者の問いかけに対して音声で答える対話形式の情報提供も可能となっている。 In the first application example shown in FIG. 1, the vibration system 1 of this embodiment is applied to the guide sign A1 of the bus stop. The vibration system 1 is a system that provides voice information regarding bus operation, various advertisements, and the like, and includes an oscillator 11 and a drive unit 12. In addition, the vibration system 1 can also provide interactive information that answers the questions of the users of the bus stop by voice.
　振動子１１は、貼付対象物に振動を伝達することで音を放射させるものであり、振動アクチュエータ１１１、信号電線１１２、及び貼付部１１３、を備えている。振動アクチュエータ１１１は、音を表す電気信号としての音信号を、信号電線１１２を介して供給され、その音信号に応じて自ら振動する部位である。信号電線１１２は、外部からの音信号を振動アクチュエータ１１１に入力するための入力線である。貼付部１１３は、振動アクチュエータ１１１と一体に形成された板状の部位であり貼付対象物に貼付される。 The vibrator 11 radiates sound by transmitting vibration to the object to be attached, and includes a vibration actuator 111, a signal wire 112, and an attachment portion 113. The vibration actuator 111 is a portion where a sound signal as an electric signal representing sound is supplied via a signal wire 112 and vibrates by itself in response to the sound signal. The signal wire 112 is an input line for inputting a sound signal from the outside to the vibration actuator 111. The sticking portion 113 is a plate-shaped portion formed integrally with the vibrating actuator 111 and is stuck to the sticking object.
　駆動ユニット１２は、振動子１１に信号電線１１２を介して有線接続されており、内蔵のマイクロコンピュータにおいて提供情報に応じた音信号の生成処理等を実行する。そして、駆動ユニット１２は、生成した音信号を振動子１１に供給して振動子１１を駆動し、音を放射させることで、音声での情報提供を行う。 The drive unit 12 is wiredly connected to the vibrator 11 via a signal wire 112, and a built-in microcomputer executes a sound signal generation process or the like according to the provided information. Then, the drive unit 12 supplies the generated sound signal to the vibrator 11 to drive the vibrator 11 and radiate the sound to provide information by voice.
　また、振動子１１で得られる音に対する調整に資するために駆動ユニット１２には２つのマイクＭ１が有線接続されている。即ち、本実施例の振動システム１では、振動子１１が実際に放射させた音がマイクＭ１で集音され、駆動ユニット１２では、振動子１１へと供給される音信号がマイクＭ１での集音結果に基づいて調整されることで、振動子１１が放射させる音が調整される。また、マイクＭ１は、対話形式の情報提供にも利用される。駆動ユニット１２では、マイクＭ１で集音された利用者の音声に対する音声認識処理が行われて利用者からの問いかけが認識され、その問いかけに対する回答音声を表す音信号が生成される。この音信号に基づく振動子１１の駆動により、利用者の問いかけに対する音声での回答がなされる。 Further, two microphones M1 are connected by wire to the drive unit 12 in order to contribute to the adjustment for the sound obtained by the vibrator 11. That is, in the vibration system 1 of the present embodiment, the sound actually radiated by the vibrator 11 is collected by the microphone M1, and in the drive unit 12, the sound signal supplied to the vibrator 11 is collected by the microphone M1. By adjusting based on the sound result, the sound radiated by the vibrator 11 is adjusted. The microphone M1 is also used for interactive information provision. In the drive unit 12, voice recognition processing is performed on the user's voice collected by the microphone M1, the question from the user is recognized, and a sound signal representing the answer voice to the question is generated. By driving the vibrator 11 based on this sound signal, a voice answer to the user's question is made.
　図１に示されている第１適用例では、案内標識Ａ１における円形平板状の停留所名称表示板Ａ１１の裏面中央に振動子１１が貼付され、路線図／時刻表表示板Ａ１２に２つのマイクＭ１が固定され、土台Ａ１３に駆動ユニット１２が固定されている。この第１適用例では、振動子１１の貼付対象物である停留所名称表示板Ａ１１に振動が伝達されて、この停留所名称表示板Ａ１１を主たる発音部として音が放射される。 In the first application example shown in FIG. 1, the vibrator 11 is attached to the center of the back surface of the circular flat plate-shaped stop name display plate A11 on the guide sign A1, and the two microphones M1 are attached to the route map / timetable display plate A12. Is fixed, and the drive unit 12 is fixed to the base A13. In this first application example, the vibration is transmitted to the stop name display plate A11, which is the object to which the vibrator 11 is attached, and the sound is radiated with the stop name display plate A11 as the main sounding unit.
　以下、本実施例の振動システム１の、他の適用例について説明する。 Hereinafter, other application examples of the vibration system 1 of this embodiment will be described.
　図３は、振動システムの第２適用例を示す模式図であり、図４は、振動システムの第３適用例を示す模式図であり、図５は、振動システムの第４適用例を示す模式図である。 FIG. 3 is a schematic diagram showing a second application example of the vibration system, FIG. 4 is a schematic diagram showing a third application example of the vibration system, and FIG. 5 is a schematic diagram showing a fourth application example of the vibration system. It is a figure.
　図３の第２適用例は、公園等の案内標識Ａ２に振動システム１を適用した例である。この第２適用例では、地図等を表示する長方形平板状の案内表示板Ａ２１の裏面中央に振動子１１が貼付されている。また、案内表示板Ａ２１を支持する２本の支柱Ａ２２それぞれに１つずつマイクＭ１が固定され、１本の支柱Ａ２２の根本部に駆動ユニット１２が固定されている。 The second application example of FIG. 3 is an example in which the vibration system 1 is applied to the guide sign A2 of a park or the like. In this second application example, the vibrator 11 is attached to the center of the back surface of the rectangular flat plate-shaped guide display plate A21 for displaying a map or the like. Further, one microphone M1 is fixed to each of the two columns A22 supporting the guide display board A21, and the drive unit 12 is fixed to the root of one column A22.
　図４の第３適用例は、喫茶店等の店舗案内用のＡ型スタンド看板Ａ３に振動システム１を適用した例である。この第３適用例では、各種店舗情報を表示する長方形平板状の２枚の案内表示板Ａ３１のうちの一枚の裏面中央に振動子１１が貼付されている。また、同じ案内表示板Ａ２１の裏面における振動子１１よりも下方の位置に１つのマイクＭ１が固定され、振動子１１やマイクＭ１の取付け側とは反対側の案内表示板Ａ３１の裏面下方位置に駆動ユニット１２が固定されている。 The third application example of FIG. 4 is an example in which the vibration system 1 is applied to the A-type stand signboard A3 for store guidance of a coffee shop or the like. In this third application example, the vibrator 11 is attached to the center of the back surface of one of the two rectangular flat plate-shaped guide display plates A31 that display various store information. Further, one microphone M1 is fixed at a position below the vibrator 11 on the back surface of the same guide display plate A21, and at a position below the back surface of the guide display plate A31 on the side opposite to the mounting side of the vibrator 11 and the microphone M1. The drive unit 12 is fixed.
　図５の第４適用例は、動物園等に設置される、動物の形を模した案内看板Ａ４に振動システム１を適用した例である。この第４適用例では、１枚の案内看板Ａ４の裏面に、振動子１１、１つのマイクＭ１、及び駆動ユニット１２が全て取り付けられている。振動子１１は案内看板Ａ４の裏面上方位置に貼付され、その下方位置に１つのマイクＭ１が固定されている。また、案内看板Ａ４の裏面の最下方位置に駆動ユニット１２が固定されている。 The fourth application example of FIG. 5 is an example in which the vibration system 1 is applied to a guide signboard A4 that imitates the shape of an animal installed in a zoo or the like. In this fourth application example, the vibrator 11, the microphone M1, and the drive unit 12 are all attached to the back surface of one guide signboard A4. The vibrator 11 is attached to a position above the back surface of the guide signboard A4, and one microphone M1 is fixed to the position below the guide sign A4. Further, the drive unit 12 is fixed at the lowermost position on the back surface of the guide signboard A4.
　以上に説明した第２～第４適用例の何れにおいても、図１の第１適用例の場合と同様に、振動システム１では、振動子１１の貼付対象物である板状の部位を主たる発音部として音が放射される。これにより、音声による各種案内情報の提供や、利用者の問いかけに対する音声での回答が行われる。 In any of the second to fourth application examples described above, as in the case of the first application example of FIG. 1, in the vibration system 1, the plate-shaped portion to which the vibrator 11 is attached is mainly pronounced. Sound is radiated as a part. As a result, various guidance information is provided by voice, and the user's question is answered by voice.
　このような振動システム１は、次のような機能ブロックを備えている。 Such a vibration system 1 has the following functional blocks.
　図６は、図１～図５に示されている振動システムにおける機能ブロックを示す模式的なブロック図である。 FIG. 6 is a schematic block diagram showing functional blocks in the vibration system shown in FIGS. 1 to 5.
　振動システム１は、機能ブロックとして、振動子１１、集音結果取得部１２１、並替え処理部１２２、集音結果記憶部１２３、パラメータ取得部１２４、パラメータ記憶部１２５、音信号生成部１２６、及び調整部１２７、を備えている。尚、ここにいう機能ブロックとしての振動子１１は、図１～図５に示されているハードウェアとしての振動子１１と同じものであるので、両者を特に区別することなく同じ符号を付して説明する。また、振動システム１の機能ブロックのうち、集音結果取得部１２１、並替え処理部１２２、パラメータ取得部１２４、音信号生成部１２６、及び調整部１２７、が駆動ユニット１２におけるマイクロコンピュータ等の動作によって構築される。集音結果記憶部１２３及びパラメータ記憶部１２５は、駆動ユニット１２に搭載されたメモリにおける一記憶領域によって構築される。 The vibration system 1 has the vibrator 11, the sound collection result acquisition unit 121, the rearrangement processing unit 122, the sound collection result storage unit 123, the parameter acquisition unit 124, the parameter storage unit 125, the sound signal generation unit 126, and the sound signal generation unit 126 as functional blocks. The adjusting unit 127 is provided. Since the vibrator 11 as a functional block referred to here is the same as the vibrator 11 as hardware shown in FIGS. 1 to 5, the same reference numerals are given without particularly distinguishing between the two. Will be explained. Further, among the functional blocks of the vibration system 1, the sound collection result acquisition unit 121, the rearrangement processing unit 122, the parameter acquisition unit 124, the sound signal generation unit 126, and the adjustment unit 127 operate the microcomputer and the like in the drive unit 12. Constructed by. The sound collection result storage unit 123 and the parameter storage unit 125 are constructed by one storage area in the memory mounted on the drive unit 12.
　振動子１１は、上述したように貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる。 The vibrator 11 radiates sound by transmitting vibration based on a sound signal to the object to be attached as described above.
　集音結果取得部１２１は、振動子１１の周辺における音がマイクＭ１で集音されたときの集音結果をマイクＭ１から取得する。このときの取得は、振動子１１が音信号に基づいて案内音声等の音を放射させる所定時間前から行われる。音を放射させているときの集音結果は、後述の音質パラメータ及び音量パラメータの両方の取得に使われ、音を放射させる前の集音結果は、音量パラメータの取得に使われる。 The sound collection result acquisition unit 121 acquires the sound collection result when the sound around the vibrator 11 is collected by the microphone M1 from the microphone M1. The acquisition at this time is performed from a predetermined time before the vibrator 11 emits a sound such as a guidance voice based on the sound signal. The sound collection result when the sound is radiated is used for acquiring both the sound quality parameter and the volume parameter described later, and the sound collection result before the sound is radiated is used for the acquisition of the volume parameter.
　並替え処理部１２２は、集音結果取得部１２１の集音結果から、音声としては判別不能な短時間に亘る瞬時集音結果を所定の離散時間を空けて複数抽出し、残りの集音結果を破棄する。具体的には、０．１秒等の極めて短時間の瞬時集音結果のサンプリングを０．１秒間隔で１００秒間実行し、１秒当たり１個の瞬時集音結果を残して他を破棄することで、０．９秒の離散時間を空けて１００個の瞬時集音結果を抽出する等といった処理が行われる。このとき、並替え処理部１２２は、後の調整パラメータの算出に備えて、集音結果群の抽出の元となった集音時に振動子１１に供給されて案内音声等の音を放射させた音信号についても同様の抽出を行う。即ち、抽出元の集音結果に音信号を同期させた状態で、この音信号から、瞬時集音結果と同じ短時間の瞬時音信号を、瞬時集音結果と同じ離散時間を空けて複数抽出する。 The rearrangement processing unit 122 extracts a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as voice, from the sound collection results of the sound collection result acquisition unit 121 at a predetermined discrete time, and the remaining sound collection results. Discard. Specifically, sampling of an extremely short-time instantaneous sound collection result such as 0.1 second is executed at 0.1 second intervals for 100 seconds, leaving one instantaneous sound collection result per second and discarding the others. As a result, processing such as extracting 100 instantaneous sound collection results with a discrete time of 0.9 seconds is performed. At this time, the rearrangement processing unit 122 was supplied to the vibrator 11 at the time of sound collection, which was the source of extraction of the sound collection result group, and radiated a sound such as a guidance voice in preparation for the calculation of the adjustment parameter later. The same extraction is performed for the sound signal. That is, in a state where the sound signal is synchronized with the sound collection result of the extraction source, a plurality of short-time instantaneous sound signals, which are the same as the instantaneous sound collection result, are extracted from this sound signal with the same discrete time as the instantaneous sound collection result. do.
　このように抽出された瞬時集音結果及び瞬時音信号は、何れも集音順に並んだものとなっているが、並替え処理部１２２は、その並び順を、瞬時集音結果と瞬時音信号との同期は保ちつつ不規則に並び替える。これにより、瞬時集音結果の集合である、音放射前からの瞬時集音結果の集合である集音結果群と、音放射中の瞬時音信号の集合である音信号群と、が生成される。 The instantaneous sound collection result and the instantaneous sound signal extracted in this way are both arranged in the order of sound collection, and the rearrangement processing unit 122 sets the order of the instantaneous sound collection result and the instantaneous sound signal. Sort irregularly while maintaining synchronization with. As a result, a sound collection result group, which is a set of instantaneous sound collection results before sound emission, and a sound signal group, which is a set of instantaneous sound signals during sound emission, are generated. NS.
　集音結果記憶部１２３は、並替え処理部１２２で生成された集音結果群と音信号群とを互いに同期させた状態で記憶し、後段の処理部であるパラメータ取得部１２４によって記憶内容を読み取られる部位となっている。 The sound collection result storage unit 123 stores the sound collection result group and the sound signal group generated by the rearrangement processing unit 122 in a state of being synchronized with each other, and the stored contents are stored by the parameter acquisition unit 124 which is the subsequent processing unit. It is a part that can be read.
　パラメータ取得部１２４は、振動子１１が放射させる音を調整するための調整パラメータを、並替え処理部１２２で生成され集音結果記憶部１２３に記憶された集音結果群と音信号群に基づいて取得する。 The parameter acquisition unit 124 bases the adjustment parameters for adjusting the sound radiated by the vibrator 11 on the sound collection result group and the sound signal group generated by the rearrangement processing unit 122 and stored in the sound collection result storage unit 123. To get.
　ここで、本実施例では、駆動ユニット１２が所定の通信ネットワークＮ１を介してサーバ装置ＳＶ１に接続されている。そして、このサーバ装置ＳＶ１において、音信号（ここでは、上記の音信号群）及び集音結果群に基づく調整パラメータの算出処理が実行される。パラメータ取得部１２４は、通信ネットワークＮ１を介してサーバ装置ＳＶ１に集音結果群と音信号群を互いの同期を保ったまま送り、当該サーバ装置ＳＶ１での算出結果を、通信ネットワークＮ１を介して受け取ることで調整パラメータを取得する。 Here, in this embodiment, the drive unit 12 is connected to the server device SV1 via a predetermined communication network N1. Then, in this server device SV1, the calculation process of the adjustment parameter based on the sound signal (here, the above-mentioned sound signal group) and the sound collection result group is executed. The parameter acquisition unit 124 sends the sound collection result group and the sound signal group to the server device SV1 via the communication network N1 while maintaining mutual synchronization, and sends the calculation result of the server device SV1 to the server device SV1 via the communication network N1. Get the adjustment parameters by receiving.
　また、パラメータ取得部１２４は、音質を調整するための音質パラメータと音量を調整するための音量パラメータとを取得する。即ち、サーバ装置ＳＶ１において、集音結果群と音信号群に基づいてこれらのパラメータの算出が行われる。 Further, the parameter acquisition unit 124 acquires a sound quality parameter for adjusting the sound quality and a volume parameter for adjusting the volume. That is, in the server device SV1, these parameters are calculated based on the sound collection result group and the sound signal group.
　音質パラメータの算出には、音放射中の集音結果群と音信号群が使われる。そして、音質パラメータの算出においては、まず、集音結果群をなす瞬時集音結果と、音信号群をなす瞬時音信号と、の互いに同期するものどうしの組合せ毎に次のようなゲインのセットが求められる。即ち、各組の瞬時集音結果と瞬時音信号と互いに同期させた上で、複数の周波数帯域それぞれについて両者を比較して差分を求め、その差分を縮めるためのゲインが算出される。このようにして、瞬時集音結果と瞬時音信号との各組毎に複数のゲインのセットが求められる。その後、今度は、複数組のゲインのセットの相互間で、周波数帯域が対応するものどうしの平均値が算出される。例えば、１００組のゲインのセットが求められた場合には、各周波数帯域について１００個のゲインの平均値が求められることとなる。このようにして周波数帯域毎に得られたゲインの平均値のセットが、音質パラメータとなる。 The sound quality parameter is calculated using the sound collection result group and the sound signal group during sound radiation. Then, in the calculation of the sound quality parameter, first, the following gain set is set for each combination of the instantaneous sound collection result forming the sound collection result group and the instantaneous sound signal forming the sound signal group that are synchronized with each other. Is required. That is, after synchronizing the instantaneous sound collection result of each set and the instantaneous sound signal with each other, the difference is obtained by comparing each of the plurality of frequency bands, and the gain for reducing the difference is calculated. In this way, a plurality of gain sets are required for each set of the instantaneous sound collection result and the instantaneous sound signal. Then, this time, the average value of the corresponding frequency bands is calculated between a plurality of sets of gains. For example, when 100 sets of gains are obtained, the average value of 100 gains is obtained for each frequency band. The set of the average values of the gains obtained for each frequency band in this way becomes the sound quality parameter.
　音量パラメータには、音放射中の集音結果群と音信号群、及び、振動子１１が音を放射させていないときの背景音に対応する音放射前の集音結果群が使われる。そして、音量パラメータの算出においては、まず、放音時の騒音レベルが瞬時集音結果それぞれについて個別に算出され、各騒音レベルに応じた最適なボリュームが算出される。この騒音レベル及びボリュームは、音放射前の集音結果群をなす瞬時集音結果、音放射中の集音結果群をなす瞬時集音結果、及び音信号群をなす瞬時音信号、に基づいて算出される。そして、放音時の集音結果群をなす瞬時集音結果と同数算出されたボリュームの平均値が、音量パラメータとして算出される。 For the volume parameter, the sound collection result group and the sound signal group during sound emission, and the sound collection result group before sound emission corresponding to the background sound when the vibrator 11 does not emit sound are used. Then, in the calculation of the volume parameter, first, the noise level at the time of sound emission is calculated individually for each of the instantaneous sound collection results, and the optimum volume corresponding to each noise level is calculated. This noise level and volume are based on the instantaneous sound collection result that forms the sound collection result group before sound emission, the instantaneous sound collection result that forms the sound collection result group during sound emission, and the instantaneous sound signal that forms the sound signal group. Calculated. Then, the average value of the volumes calculated in the same number as the instantaneous sound collection results forming the sound collection result group at the time of sound emission is calculated as the volume parameter.
　パラメータ取得部１２４は、サーバ装置ＳＶ１においてこのようにして算出された音質パラメータ及び音量パラメータをサーバ装置ＳＶ１から受け取る。 The parameter acquisition unit 124 receives the sound quality parameter and the volume parameter calculated in this way in the server device SV1 from the server device SV1.
　パラメータ記憶部１２５は、パラメータ取得部１２４によって取得された音質パラメータ及び音量パラメータを記憶する。 The parameter storage unit 125 stores the sound quality parameter and the volume parameter acquired by the parameter acquisition unit 124.
　音信号生成部１２６は、各種案内音声を表す音信号の生成を行う。また、本実施例では、対話形式での情報提供のために、音信号生成部１２６では、マイクＭ１で集音され集音結果取得部で取得された利用者の問いかけについての集音結果に対する音声認識処理による利用者の問いかけの把握が行われる。そして、音信号生成部１２６は、その問いかけへの回答音声を表す音信号の生成を行う。 The sound signal generation unit 126 generates sound signals representing various guidance voices. Further, in the present embodiment, in order to provide information in an interactive format, the sound signal generation unit 126 collects sound by the microphone M1 and obtains a voice for the user's question regarding the sound collection result acquisition unit. The user's question is grasped by the recognition process. Then, the sound signal generation unit 126 generates a sound signal representing the answer voice to the question.
　調整部１２７は、パラメータ取得部１２４で取得され、パラメータ記憶部１２５に記憶された音質パラメータや音量パラメータを用い、音信号生成部１２６で生成された音信号を調整し、その調整済みの音信号を振動子１１に供給する。この音信号の調整と、調整済みの音信号の供給により、調整部１２７は、振動子１１が放射させる音を調整する。 The adjustment unit 127 adjusts the sound signal generated by the sound signal generation unit 126 by using the sound quality parameter and the volume parameter acquired by the parameter acquisition unit 124 and stored in the parameter storage unit 125, and the adjusted sound signal. Is supplied to the vibrator 11. By adjusting the sound signal and supplying the adjusted sound signal, the adjusting unit 127 adjusts the sound radiated by the vibrator 11.
　次に、図６に示されている振動システム１で実行される振動方法の処理について、ここまでの説明と重複する部分もあるが改めて説明する。 Next, the processing of the vibration method executed by the vibration system 1 shown in FIG. 6 will be described again, although there are some overlaps with the explanations so far.
　図７は、図６に示されている振動システムで実行される振動方法の処理の流れを表すフローチャートである。 FIG. 7 is a flowchart showing the processing flow of the vibration method executed by the vibration system shown in FIG.
　この図７に示されるフローチャートは、調整パラメータを取得して記憶／更新するパラメータ取得フローと、予め定められたタイミングでの案内音声や、利用者の問いかけに対する回答音声を放射する音声放射フローと、の２つのフローからなる。これら２つのフローは、駆動ユニット１２に電源が投入されるとスタートして互いに並行して実行される。 The flowchart shown in FIG. 7 includes a parameter acquisition flow for acquiring and storing / updating adjustment parameters, a voice radiation flow for radiating a guidance voice at a predetermined timing, and a voice for answering a user's question. It consists of two flows. These two flows start when the drive unit 12 is powered on and are executed in parallel with each other.
　パラメータ取得フローでは、まず、マイクＭ１で集音される振動子１１の周辺における、振動子１１による音放射前から音放射中に掛けての音についての集音結果を取得する集音結果取得工程が実行される（ステップＳ１１）。次に、取得された集音結果からの瞬時集音結果の抽出、対応する音信号からの瞬時音信号の抽出、及び、両者を互いに同期させた上での並替えにより、集音結果群及び音信号群を生成する並替え処理工程が並替え処理部１２２によって実行される（ステップＳ１２）。更に、生成された集音結果群が音信号群との同期を保った状態で記憶される集音結果記憶工程が集音結果記憶部１２３によって実行される（ステップＳ１２）。そして、記憶された集音結果群及び音信号群がサーバ装置ＳＶ１に送られ、これらに基づいて算出される音質パラメータ及び音量パラメータを受け取るパラメータ取得工程がパラメータ取得部１２４によって実行される（ステップＳ１４）。その後、取得された音質パラメータ及び音量パラメータで記憶内容を更新する更新工程がパラメータ記憶部１２５によって実行される（ステップＳ１５）。尚、本実施例では、振動システム１が設置現場に設置される初期段階では、パラメータ記憶部１２５にはデフォルトの音量パラメータ及び音質パラメータが記憶されており、設置後の更新工程（ステップＳ１５）によって各パラメータが更新されることとなる。この更新工程（ステップＳ１５）の終了後、処理が集音結果取得工程（ステップＳ１１）に戻り、以降の処理が繰り返される。 In the parameter acquisition flow, first, a sound collection result acquisition step of acquiring the sound collection result of the sound applied from before the sound radiation by the vibrator 11 to during the sound radiation around the vibrator 11 collected by the microphone M1. Is executed (step S11). Next, by extracting the instantaneous sound collection result from the acquired sound collection result, extracting the instantaneous sound signal from the corresponding sound signal, and rearranging the two after synchronizing them with each other, the sound collection result group and the sound collection result group and The rearrangement processing step of generating the sound signal group is executed by the rearrangement processing unit 122 (step S12). Further, the sound collection result storage unit 123 executes a sound collection result storage step in which the generated sound collection result group is stored in a state of maintaining synchronization with the sound signal group (step S12). Then, the stored sound collection result group and sound signal group are sent to the server device SV1, and the parameter acquisition step of receiving the sound quality parameter and the volume parameter calculated based on these is executed by the parameter acquisition unit 124 (step S14). ). After that, the parameter storage unit 125 executes an update step of updating the stored contents with the acquired sound quality parameter and volume parameter (step S15). In this embodiment, the default volume parameter and sound quality parameter are stored in the parameter storage unit 125 at the initial stage when the vibration system 1 is installed at the installation site, and the update step (step S15) after the installation causes the parameter storage unit 125 to store the default volume parameter and sound quality parameter. Each parameter will be updated. After the end of this update step (step S15), the process returns to the sound collection result acquisition step (step S11), and the subsequent processes are repeated.
　他方、音声放射フローでは、振動子１１によって放射させる音を表す音信号を生成する音信号生成工程が音信号生成部１２６によって実行される（ステップＳ１６）。この音信号生成工程（ステップＳ１６）では、各種案内音声を表す音信号の生成や、音声認識処理による利用者の問いかけの把握と、その問いかけへの回答音声を表す音信号の生成が行われる。そして、予め定められた案内音声の放射タイミングや、利用者への回答のタイミング等、音を放射すべきタイミングが到来すると、調整部１２７によって調整工程が実行される（ステップＳ１７）。調整工程（ステップＳ１７）では、その時点でパラメータ記憶部１２５に記憶されている音量パラメータ及び音質パラメータを用いて、振動子１１による音が調整される。即ち、音信号生成工程（ステップＳ１６）で生成された音信号が各種パラメータによって調整され、その調整済みの音信号が振動子１１に供給されることで、放射させる音が調整される。この調整工程（ステップＳ１７）の時点で、パラメータ記憶部１２５の記憶内容について更新工程（ステップＳ１５）が実行されていなければ、デフォルトのパラメータが用いられる。他方、更新工程（ステップＳ１５）が実行されていれば、その更新済みのパラメータが用いられる。また、調整工程（ステップＳ１７）の実行中、即ち振動子１１による音の放射中に更新工程（ステップＳ１５）が実行された場合には、それ以降に放射される音は、更新後の最新のパラメータが用いられて調整されることとなる。振動子１１による音の放射を含む調整工程（ステップＳ１７）が終了すると、音信号生成工程（ステップＳ１６）に戻って、次の音放射に備えられる。 On the other hand, in the sound radiation flow, the sound signal generation unit 126 executes a sound signal generation step of generating a sound signal representing the sound radiated by the vibrator 11 (step S16). In this sound signal generation step (step S16), sound signals representing various guidance voices are generated, a user's question is grasped by voice recognition processing, and a sound signal representing a response voice to the question is generated. Then, when the timing at which the sound should be radiated, such as the radiated timing of the guidance voice set in advance and the timing of the reply to the user, arrives, the adjusting unit 127 executes the adjusting step (step S17). In the adjustment step (step S17), the sound produced by the vibrator 11 is adjusted using the volume parameter and the sound quality parameter stored in the parameter storage unit 125 at that time. That is, the sound signal generated in the sound signal generation step (step S16) is adjusted by various parameters, and the adjusted sound signal is supplied to the vibrator 11, so that the sound to be radiated is adjusted. If the update step (step S15) has not been executed for the stored contents of the parameter storage unit 125 at the time of this adjustment step (step S17), the default parameters are used. On the other hand, if the update step (step S15) has been executed, the updated parameters are used. Further, when the update step (step S15) is executed during the execution of the adjustment step (step S17), that is, while the sound is radiated by the vibrator 11, the sound radiated after that is the latest after the update. The parameters will be used and adjusted. When the adjustment step (step S17) including the sound radiation by the vibrator 11 is completed, the process returns to the sound signal generation step (step S16) to prepare for the next sound radiation.
　本実施例では、図７のフローチャートで表される振動方法をコンピュータにより実行させる振動プログラムが、駆動ユニット１２に搭載された記憶媒体に記憶されている。尚、この振動プログラムを記憶する記憶媒体は、駆動ユニット１２に搭載された記憶媒体に限らず、駆動ユニット１２に接続されるＰＣ等に搭載された記憶媒体であってもよく、あるいは公知の可搬記憶媒体等であってもよい。 In this embodiment, a vibration program for executing the vibration method shown in the flowchart of FIG. 7 by a computer is stored in a storage medium mounted on the drive unit 12. The storage medium for storing the vibration program is not limited to the storage medium mounted on the drive unit 12, and may be a storage medium mounted on a PC or the like connected to the drive unit 12, or may be known. It may be a carrying storage medium or the like.
　以上に説明した実施例の振動システム１、振動方法、振動プログラム、及び記憶媒体によれば、調整パラメータの取得に用いられる集音結果群は、音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められたものである。そして、このような集音結果群から利用者の会話内容等を把握することは極めて困難である。つまり、上記の振動システム１によれば、プライバシーを保護しつつ音を調整することができる。 According to the vibration system 1, the vibration method, the vibration program, and the storage medium of the embodiment described above, the sound collection result group used for acquiring the adjustment parameters is an instantaneous sound collection over a short period of time that cannot be discriminated as voice. A plurality of results are collected at a predetermined discrete time. Then, it is extremely difficult to grasp the conversation content of the user from such a sound collection result group. That is, according to the vibration system 1 described above, the sound can be adjusted while protecting privacy.
　ここで、本実施例では、パラメータ取得部１２４が、通信ネットワークＮ１を介してサーバ装置ＳＶ１に音信号及び集音結果群を送り、当該サーバ装置ＳＶ１での算出結果を、通信ネットワークＮ１を介して受け取ることで調整パラメータを取得する。この構成によれば、パラメータの算出が、処理能力に余裕のあるサーバ装置ＳＶ１で実行され、パラメータ取得部１２４はその算出結果を受け取るだけとなることから、より処理負担が抑えられるシステムを構築することができる。 Here, in the present embodiment, the parameter acquisition unit 124 sends a sound signal and a sound collection result group to the server device SV1 via the communication network N1, and calculates the calculation result in the server device SV1 via the communication network N1. Get the adjustment parameters by receiving. According to this configuration, the parameter calculation is executed by the server device SV1 having a sufficient processing capacity, and the parameter acquisition unit 124 only receives the calculation result, so that a system in which the processing load can be further suppressed is constructed. be able to.
　また、本実施例の振動システム１は、集音順に並ぶ複数の瞬時集音結果について、その並び順を不規則に並び替えて集音結果群を生成する並替え処理部１２２を、更に備えている。この構成によれば、複数の瞬時集音結果の並び順が不規則に並び替えられて集音結果群が生成され、集音結果群から利用者の会話内容等を把握することについての困難さが一層増すので、プライバシーを一層保護することができる。 Further, the vibration system 1 of the present embodiment further includes a rearrangement processing unit 122 that randomly rearranges the arrangement order of a plurality of instantaneous sound collection results arranged in the sound collection order to generate a sound collection result group. There is. According to this configuration, the order of a plurality of instantaneous sound collection results is irregularly rearranged to generate a sound collection result group, and it is difficult to grasp the conversation content of the user from the sound collection result group. Is further increased, so privacy can be further protected.
　また、本実施例の振動システム１は、集音結果群を記憶し、後段の処理部によって記憶内容を読み取られる集音結果記憶部１２３を、を更に備えている。この構成によれば、会話内容等の把握が困難な集音結果群を記憶させることでプライバシーを保護しつつも、調整パラメータの取得の源泉が保存されることとなるので、例えば後日のメンテナンス等に資することができる。 Further, the vibration system 1 of the present embodiment further includes a sound collection result storage unit 123 that stores the sound collection result group and can read the stored contents by the processing unit in the subsequent stage. According to this configuration, while protecting privacy by storing a group of sound collection results for which it is difficult to grasp the conversation content, etc., the source of acquisition of adjustment parameters is saved, so for example, maintenance at a later date, etc. Can contribute to.
　また、本実施例では、パラメータ取得部１２４が、集音結果群における複数の瞬時集音結果それぞれについて個別に算出されたパラメータの平均値を調整パラメータとして取得する。この構成によれば、個別に算出されたパラメータが多少ばらつくようなことがあっても、平均値を求めることで精度の高い調整パラメータを得ることができる。 Further, in this embodiment, the parameter acquisition unit 124 acquires the average value of the parameters individually calculated for each of the plurality of instantaneous sound collection results in the sound collection result group as the adjustment parameter. According to this configuration, even if the individually calculated parameters vary slightly, it is possible to obtain highly accurate adjustment parameters by obtaining the average value.
　次に、図１～図７に示されている実施例の変形例について、図８の機能ブロック図に対応する変形例の機能ブロック図を用いて説明する。 Next, a modified example of the embodiment shown in FIGS. 1 to 7 will be described with reference to the functional block diagram of the modified example corresponding to the functional block diagram of FIG.
　図８は、図１～図７に示されている実施例の変形例を、図６の機能ブロック図に対応する変形例の機能ブロック図で示す図である。尚、図７では、図６に示されている構成要素と同等な構成要素については、図６と同じ符号が付されており、以下では、これら同等な構成要素についての重複説明を割愛する。 FIG. 8 is a diagram showing a modified example of the embodiment shown in FIGS. 1 to 7 in a functional block diagram of the modified example corresponding to the functional block diagram of FIG. In FIG. 7, components equivalent to the components shown in FIG. 6 are designated by the same reference numerals as those in FIG. 6, and duplicate description of these equivalent components will be omitted below.
　この変形例の振動システム２では、駆動ユニット２２におけるパラメータ取得部２２４が上述の実施例と異なっている。 In the vibration system 2 of this modified example, the parameter acquisition unit 224 in the drive unit 22 is different from the above-described embodiment.
　本変形例では、駆動ユニット２２はサーバ装置ＳＶ１には接続されておらず、パラメータ取得部２２４が、音信号及び集音結果に基づく算出処理を自ら行うことで音質パラメータ及び音量パラメータを取得することとなっている。 In this modification, the drive unit 22 is not connected to the server device SV1, and the parameter acquisition unit 224 acquires the sound quality parameter and the volume parameter by performing the calculation process based on the sound signal and the sound collection result by itself. It has become.
　ただし、本変形例においても、瞬時集音結果の集合である集音結果群及び瞬時音信号の集合である音信号群に基づいて、パラメータ取得部２２４で音質パラメータ及び音量パラメータの取得が実行される点は、上述した実施例と同じである。 However, also in this modification, the parameter acquisition unit 224 acquires the sound quality parameter and the volume parameter based on the sound collection result group which is a set of the instantaneous sound collection results and the sound signal group which is a set of the instantaneous sound signals. The points are the same as those in the above-described embodiment.
　以上に説明した変形例でも、利用者の会話内容等を把握することは極めて困難な集音結果群に基づいて音質パラメータ及び音量パラメータの取得が実行されるので、プライバシーを保護しつつ音を調整することができることは言うまでもない。 Even in the modified example described above, the sound quality parameter and the volume parameter are acquired based on the sound collection result group, which is extremely difficult to grasp the conversation content of the user, so the sound is adjusted while protecting privacy. It goes without saying that you can do it.
　ここで、本変形例では、パラメータ取得部２２４が音信号群及び集音結果群に基づく算出処理を自ら行うことで音質パラメータ及び音量パラメータが取得される。この構成によれば、パラメータの算出を含むシステム全体を貼付対象物の近傍に集約することができるので、システム構成を簡略化してコスト等を低減することができる。 Here, in this modified example, the sound quality parameter and the volume parameter are acquired by the parameter acquisition unit 224 performing the calculation process based on the sound signal group and the sound collection result group by itself. According to this configuration, the entire system including the calculation of parameters can be integrated in the vicinity of the object to be attached, so that the system configuration can be simplified and the cost or the like can be reduced.
　尚、本発明は、以上に説明した実施例や変形例に限定されるものではなく、本発明の目的が達成できる他の構成等を含み、以下に示すような変形等も本発明に含まれる。 The present invention is not limited to the examples and modifications described above, but includes other configurations that can achieve the object of the present invention, and the following modifications are also included in the present invention. ..
　例えば、上述した実施例及び変形例では、振動システム１，２の適用例として、バス停留所の案内標識Ａ１、公園等の案内標識Ａ２、Ａ型スタンド看板Ａ３、及び案内看板Ａ４、への適用例が例示されている。しかしながら、振動システムの適用例はこれらに限るものではなく、その具体的な適用例を問うものではない。 For example, in the above-described examples and modifications, as application examples of the vibration systems 1 and 2, application examples to the guide sign A1 of the bus stop, the guide sign A2 of the park, etc., the A-type stand sign A3, and the guide sign A4. Is illustrated. However, the application examples of the vibration system are not limited to these, and the specific application examples are not questioned.
　また、上述した実施例及び変形例では、２つまたは１つのマイクＭ１での集音結果が、音質パラメータや音量パラメータの取得だけでなく、対話形式での情報提供にも利用される振動システム１，２が例示されている。しかしながら、振動システムはこれらに限るものではなく、対話形式での情報提供を行わない構成としてもよい。また、マイクＭ１の接続数は２つまたは１つに限るものではなく、振動システムの設置状況に合わせて任意の数のマイクＭ１が接続されることとしてもよい。 Further, in the above-described embodiment and modification, the vibration system 1 in which the sound collection result by two or one microphone M1 is used not only for acquiring sound quality parameters and volume parameters but also for providing information in an interactive format. , 2 are illustrated. However, the vibration system is not limited to these, and may be configured not to provide information in an interactive manner. Further, the number of connected microphones M1 is not limited to two or one, and an arbitrary number of microphones M1 may be connected according to the installation situation of the vibration system.
　また、上述した実施例及び変形例では、振動子１１を１つ備えた振動システム１，２が例示されている。しかしながら、振動システムはこれらに限るものではなく、振動システムの設置状況に合わせて任意の数の振動子を備えることとしてもよい。 Further, in the above-described examples and modifications, vibration systems 1 and 2 provided with one vibrator 11 are exemplified. However, the vibration system is not limited to these, and an arbitrary number of vibrators may be provided according to the installation situation of the vibration system.
　また、上述した実施例及び変形例では、調整パラメータとして音質パラメータ及び音量パラメータを取得する振動システム１，２が例示されている。しかしながら、振動システムはこれらに限るものではなく、何れか一方のみを取得することとしてもよい。 Further, in the above-described examples and modifications, vibration systems 1 and 2 that acquire sound quality parameters and volume parameters as adjustment parameters are exemplified. However, the vibration system is not limited to these, and only one of them may be acquired.
　また、上述した実施例では、サーバ装置ＳＶ１における音質パラメータや音量パラメータの算出結果を取得するパラメータ取得部１２４が例示されている。更に、上述した変形例では、音質パラメータや音量パラメータを自ら算出するパラメータ取得部２２４が例示されている。しかしながら、パラメータ取得部はこれらに限るものではなく、音信号及び集音結果に基づいて各種パラメータを取得するものであれば、その具体的な取得態様を問うものではない。ただし、サーバ装置ＳＶ１から音質パラメータや音量パラメータを取得する構成とすることで、汎用性の高いシステムを構築することができる点は上述した通りである。また、音質パラメータや音量パラメータを自ら算出する構成とすることで、システム構成を簡略化してコスト等を低減することができる点も上述した通りである。 Further, in the above-described embodiment, the parameter acquisition unit 124 that acquires the calculation results of the sound quality parameter and the volume parameter in the server device SV1 is exemplified. Further, in the above-described modification, the parameter acquisition unit 224 that calculates the sound quality parameter and the volume parameter by itself is exemplified. However, the parameter acquisition unit is not limited to these, and does not ask a specific acquisition mode as long as it acquires various parameters based on the sound signal and the sound collection result. However, as described above, a highly versatile system can be constructed by configuring the server device SV1 to acquire sound quality parameters and volume parameters. Further, as described above, the system configuration can be simplified and the cost or the like can be reduced by adopting the configuration in which the sound quality parameter and the volume parameter are calculated by oneself.
　また、上述した実施例及び変形例では、瞬時集音結果の並び順を不規則に並び替えて集音結果群を生成する並替え処理部１２２が設けられた振動システム１，２が例示されている。しかしながら、振動システムはこれに限るものではなく、このような並替えは行わず、集音順に並ぶ瞬時集音結果をそのまま用いてパラメータを取得することとしてもよい。尚、並替えを行わない場合、音信号については、瞬時音信号の抽出を行わず、瞬時集音結果との同期を保ちつつ、そのまま調整パラメータの取得に用いてもよい。ただし、瞬時集音結果の並替えを行うことで、プライバシーを一層保護することができる点も上述した通りである。 Further, in the above-described examples and modifications, the vibration systems 1 and 2 provided with the rearrangement processing unit 122 that randomly rearranges the arrangement order of the instantaneous sound collection results to generate the sound collection result group are exemplified. There is. However, the vibration system is not limited to this, and the parameters may be acquired by using the instantaneous sound collection results arranged in the sound collection order as they are without performing such rearrangement. When the rearrangement is not performed, the sound signal may be used as it is for acquiring the adjustment parameter while maintaining the synchronization with the instantaneous sound collection result without extracting the instantaneous sound signal. However, as described above, privacy can be further protected by rearranging the results of instantaneous sound collection.
　また、上述した実施例及び変形例では、集音結果群を記憶し、後段の処理部によって記憶内容を読み取られる集音結果記憶部１２３が設けられた振動システム１，２が例示されている。しかしながら、振動システムはこれに限るものではなく、集音結果群の記憶は行わず、パラメータの取得後に直ちに破棄することとしてもよい。ただし、パラメータの取得の源泉としての集音結果群を記憶しておくことで、例えば後日のメンテナンス等に資することができる点も上述した通りである。 Further, in the above-described examples and modifications, the vibration systems 1 and 2 provided with the sound collection result storage unit 123 for storing the sound collection result group and reading the stored contents by the processing unit in the subsequent stage are exemplified. However, the vibration system is not limited to this, and the sound collection result group may not be stored and may be discarded immediately after the parameter is acquired. However, as described above, by storing the sound collection result group as the source of parameter acquisition, for example, it can contribute to maintenance at a later date.
　また、上述した実施例及び変形例では、集音結果群における複数の瞬時集音結果それぞれについて個別に算出されたパラメータの平均値として音質パラメータ及び音量パラメータが取得される振動システム１，２が例示されている。しかしながら、振動システムはこれに限るものではなく、例えば個別に算出されたパラメータのうちの最大値や最小値等の代表値を音質パラメータ及び音量パラメータとして取得することとしてもよい。ただし、平均値を求めることで精度の高いパラメータを得ることができる点も上述した通りである。 Further, in the above-described examples and modifications, the vibration systems 1 and 2 in which the sound quality parameter and the volume parameter are acquired as the average value of the parameters calculated individually for each of the plurality of instantaneous sound collection results in the sound collection result group are exemplified. Has been done. However, the vibration system is not limited to this, and for example, representative values such as the maximum value and the minimum value among the individually calculated parameters may be acquired as the sound quality parameter and the volume parameter. However, as described above, a highly accurate parameter can be obtained by obtaining the average value.
　１，２　　振動システム
　１１　　　振動子
　１２，２２　　駆動ユニット
　１１１　　振動アクチュエータ
　１１２　　信号電線
　１１３　　貼付部
　１２１　　集音結果取得部
　１２２　　並替え処理部
　１２３　　集音結果記憶部
　１２４，２２４　　パラメータ取得部
　１２５　　パラメータ記憶部
　１２６　　音信号生成部
　１２７　　調整部
　Ａ１　　　バス停留所の案内標識
　Ａ２　　　公園等の案内標識
　Ａ３　　　Ａ型スタンド看板
　Ａ４　　　案内看板
　Ｍ１　　　マイク
　Ｎ１　　　通信ネットワーク
　ＳＶ１　　サーバ装置 1, 2 Vibration system 11 Oscillator 12, 22 Drive unit 111 Vibration actuator 112 Signal wire 113 Attached part 121 Sound collection result acquisition unit 122 Sorting processing unit 123 Sound collection result storage unit 124,224 Parameter acquisition unit 125 Parameter storage unit 126 Sound signal generator 127 Adjustment unit A1 Bus stop guide sign A2 Park guide sign A3 A type stand sign A4 Guide sign M1 Microphone N1 Communication network SV1 Server device

Claims (9)

  1. 　貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる振動子と、
    　前記振動子の周辺における音の集音結果を取得する集音結果取得部と、
    　前記振動子が放射させる音を調整するための調整パラメータを、前記音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得するパラメータ取得部と、
    　前記調整パラメータを用いて前記振動子が放射させる音を調整する調整部と、
    を備えたことを特徴とする振動システム。     A vibrator that radiates sound by transmitting vibration based on a sound signal to the object to be attached,
    A sound collection result acquisition unit that acquires a sound collection result around the vibrator, and a sound collection result acquisition unit.
    A plurality of adjustment parameters for adjusting the sound radiated by the vibrator are collected at a predetermined discrete time, and a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as the sound signal and voice, are collected. The parameter acquisition part to acquire based on the group, and
    An adjustment unit that adjusts the sound emitted by the vibrator using the adjustment parameters,
    A vibration system characterized by being equipped with.
  2. 　前記パラメータ取得部が、前記音信号及び前記集音結果群に基づく算出処理を行うことで前記調整パラメータを取得することを特徴とする請求項１に記載の振動システム。 The vibration system according to claim 1, wherein the parameter acquisition unit acquires the adjustment parameter by performing a calculation process based on the sound signal and the sound collection result group.
  3. 　所定の通信ネットワークに接続されるサーバ装置において、前記音信号及び前記集音結果群に基づく前記調整パラメータの算出処理が実行され、
    　前記パラメータ取得部が、前記通信ネットワークを介して前記サーバ装置に前記音信号及び前記集音結果群を送り、当該サーバ装置での算出結果を、前記通信ネットワークを介して受け取ることで前記調整パラメータを取得することを特徴とする請求項１に記載の振動システム。     In the server device connected to the predetermined communication network, the calculation process of the adjustment parameter based on the sound signal and the sound collection result group is executed.
    The parameter acquisition unit sends the sound signal and the sound collection result group to the server device via the communication network, and receives the calculation result of the server device via the communication network to obtain the adjustment parameter. The vibration system according to claim 1, wherein the vibration system is acquired.
  4. 　集音順に並ぶ複数の前記瞬時集音結果について、その並び順を不規則に並び替えて前記集音結果群を生成する並替え処理部を、更に備え、
    　前記パラメータ取得部は、前記音信号、及び前記並替え処理部で生成された前記集音結果群に基づいて前記調整パラメータを取得することを特徴とする請求項１～３のうち何れか一項に記載の振動システム。     A rearrangement processing unit that randomly rearranges the arrangement order of the plurality of instantaneous sound collection results arranged in the sound collection order to generate the sound collection result group is further provided.
    Any one of claims 1 to 3, wherein the parameter acquisition unit acquires the adjustment parameter based on the sound signal and the sound collection result group generated by the rearrangement processing unit. The vibration system described in.
  5. 　前記集音結果群を記憶し、後段の処理部によって記憶内容を読み取られる集音結果記憶部を、を更に備えたことを特徴とする請求項１～４のうち何れか一項に記載の振動システム。 The vibration according to any one of claims 1 to 4, further comprising a sound collection result storage unit that stores the sound collection result group and can read the stored contents by a processing unit in the subsequent stage. system.
  6. 　前記パラメータ取得部が、前記集音結果群における複数の前記瞬時集音結果それぞれについて個別に算出されたパラメータの平均値を前記調整パラメータとして取得することを特徴とする請求項１～５のうち何れか一項に記載の振動システム。 Any of claims 1 to 5, wherein the parameter acquisition unit acquires an average value of parameters individually calculated for each of the plurality of instantaneous sound collection results in the sound collection result group as the adjustment parameter. The vibration system described in item 1.
  7. 　貼付対象物に、音信号に基づいた振動を伝達することで音を放射させる振動子の周辺における音の集音結果を取得する集音結果取得工程と、
    　前記振動子が放射させる音を調整するための調整パラメータを、前記音信号、及び音声としては判別不能な短時間に亘る瞬時集音結果が所定の離散時間を空けて複数集められた集音結果群に基づいて取得するパラメータ取得工程と、
    　前記調整パラメータを用いて前記振動子が放射させる音を調整する調整工程と、
    を備えたことを特徴とする振動方法。     The sound collection result acquisition process for acquiring the sound collection result around the vibrator that radiates sound by transmitting vibration based on the sound signal to the object to be attached, and the sound collection result acquisition process.
    A plurality of adjustment parameters for adjusting the sound radiated by the vibrator are collected at a predetermined discrete time, and a plurality of instantaneous sound collection results over a short period of time, which cannot be discriminated as the sound signal and voice, are collected. The parameter acquisition process to be acquired based on the group, and
    An adjustment step that adjusts the sound emitted by the vibrator using the adjustment parameters, and
    A vibration method characterized by being equipped with.
  8. 　請求項７に記載の振動方法を、コンピュータにより実行させることを特徴とする振動プログラム。 A vibration program characterized in that the vibration method according to claim 7 is executed by a computer.
  9. 　請求項８に記載の振動プログラムを記憶したことを特徴とする記憶媒体。 A storage medium characterized in that the vibration program according to claim 8 is stored.
PCT/JP2021/000983 2020-03-26 2021-01-14 Vibration system, vibration method, vibration program, and storage medium WO2021192517A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11331969A (en) * 1998-05-14 1999-11-30 Oosenteikku:Kk Panel speaker for display device
JP2013009236A (en) * 2011-06-27 2013-01-10 Kddi Corp Portable terminal device, and sound-adjustment method and program therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11331969A (en) * 1998-05-14 1999-11-30 Oosenteikku:Kk Panel speaker for display device
JP2013009236A (en) * 2011-06-27 2013-01-10 Kddi Corp Portable terminal device, and sound-adjustment method and program therefor

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