CN206619124U - A kind of holographic sound field recording communication device, system and exterior terminal based on bluetooth - Google Patents

Abstract

The utility model proposes a kind of holographic sound field recording communication device (1) based on bluetooth, system and exterior terminal (2), the collection and playback of holographic acoustic field signal are carried out using holographic sound field recording communication device (1), and carry out holographic sound field communication by the holographic sound field recording communication device (1) and with its exterior terminal (2) for carrying out bluetooth connection, the real sense of hearing and communication experience are brought to user, simultaneously, ensure the high-fidelity transfer of signal using the bluetooth uplink means for being adapted to the holographic acoustic field signal transmission, effectively improve the record of holographic acoustic field signal, share and ability to communicate.

Description

A kind of holographic sound field recording communication device, system and exterior terminal based on bluetooth

Technical field

The utility model belongs to electroacoustic and communication field, more particularly to a kind of holographic sound field recording communication dress based on bluetooth Put and system.

Background technology

Traditional way of recording includes single Mike's recording, stereophonic recording (AB, XY, MS, ORTF).Single Mike's recording is the simplest Just, but sound field is also the most dull；The original intention of stereophonic recording is to build the stereophonic field of more horn of plenty, in microphone arrangement Occur in that diversified mode, be try to simulate two ears of people to the perception characteristic of sound, such as delay, amplitude difference, Phase etc., but be simply difficult to reach the real auditory perceptual of simulation by microphone putting position.

On the other hand, the fast development of mobile broadband, the common tool such as mobile phone, the tablet personal computer of ordinary consumer is except beating There is audio frequency and video to record ability outside phone, and many digital product recording pen, the camera that can image etc. are big These equipment are all based on internal microphone and carry out recorded voice in most cases, and these built-in microphone one side tonequality compare Difference, while to show ability also excessively poor for sound field.

Some interface equipments that stereophonic recording is provided for equipment such as mobile phones are also occurred in that at present, these equipment interfaces are from upper State professional stereophony microphone and also have very big distance, let alone immersion three-dimensional sound field.In video monitoring, online education, net The fields such as network audio/video communication, or having plenty of simple monophonic audio without audio capability at all, have plenty of common stand Body sound, in a word, audio experience do not reach demand on the spot in person much.

Utility model content

In order to overcome the defect of prior art, the utility model proposes a kind of holographic sound field recording communication dress based on bluetooth Put, holographic acoustic field signal can be recorded by the device, further also holographic acoustic field signal can be reset by the device, to user with Carry out real audio experience, meanwhile, ensure signal using the bluetooth uplink means for being adapted to the holographic acoustic field signal transmission High-fidelity transfer, effectively improves the record of holographic acoustic field signal, shares and ability to communicate.

A kind of holographic sound field recording communication device (1) based on bluetooth is proposed, including two microphone units (11) are respectively It is used to gather three-dimensional sound field signal near left and right duct, collection signal processing unit (12) handles collection signal And data signal is converted into, foregoing digital signals are inputted to holographic acoustic field signal processing unit (13), holographic acoustic field signal processing Unit (13) is handled acoustic field signal, after the encoded unit of the signal after processing (14) coding compression, passes through the first bluetooth The up transmission of holographic acoustic field signal to exterior terminal (2), the signal is recorded by exterior terminal (2) by transmitting element (15), wherein, Holographic acoustic field signal is carried out by up send using blue tooth RFCOMM passage.

Further, the device also includes loudspeaker unit (19), for resetting holographic acoustic field signal, wherein, it is outside whole (2) are held to send holographic acoustic field signal, holophonic to holographic sound field recording communication device (1) by the second bluetooth transmitting element (21) The Bluetooth receptions unit (16) of field recording communication device (1) receives signal, is inputted after the decoded unit of signal (17) decoding holographic Acoustic field signal processing unit (13), holographic acoustic field signal processing unit (13) outputs signal to replay signal processing unit (18), The playback of holographic sound field is further carried out by loudspeaker unit (19).

Holography sound field recording communication device (1) as claimed in claim 2, is characterised by：Loudspeaker unit (19) is two Individual, two loudspeaker units (19) are gathered into earplug with two microphone units (11) respectively；Loudspeaker unit (19) Can as audio amplifier a part.

Further, the holographic acoustic field signal of microphone unit (11) collection, acquired signal processing unit (12) to holography Acoustic field signal processing unit (13), holographic acoustic field signal processing unit (13) sends the signal to replay signal processing unit (18), then by loudspeaker unit (19) holographic acoustic field signal reset to realize monitoring winding.

In addition, holographic acoustic field signal processing unit (13) holographic acoustic field signal can be carried out gain control, equilibrium, noise reduction, One or more of processing in speech enhan-cement, hearing correction.

Further, holographic sound field recording communication device (1) can be operated under recording mode, replay mode, listening mode, Holographic sound field recording communication device (1) is provided with mode control button, wherein, holographic audio frequency is recorded replay device and is simultaneously operable In recording mode and listening mode.

A kind of holographic sound field recording communication system based on bluetooth is proposed, is included in the above-mentioned holographic sound field record at network two ends Sound communication device (1), exterior terminal (2), the holographic acoustic field signal of holographic sound field recording communication device (1) collection of network one end, Holographic acoustic field signal is transmitted upstream to by exterior terminal (2) by blue tooth RFCOMM passage, exterior terminal (2) will be complete by network Breath acoustic field signal is sent to the exterior terminal (2) in the network other end, then by the exterior terminal (2) that holographic acoustic field signal is descending Send to the holographic sound field recording communication device (1) of the network other end, and by the holographic sound field recording communication device of the other end (1) holographic acoustic field signal is reset；Equally, the holographic sound field recording communication device (1) of the network other end and exterior terminal (2) also may be used Reverse communication is carried out by network.

A kind of holographic sound field recording communication exterior terminal (2) based on bluetooth is finally proposed, it includes bluetooth Transmit-Receive Unit (21,22), audio treatment unit (23), memory, communication module, are characterised by：Also have and coordinate above-mentioned holographic sound field recording Communication device (1) and/or holographic sound field recording communication systematic difference program (24), it can be received and dispatched by the bluetooth of exterior terminal Unit (21,22), audio treatment unit (23), memory, communication module realize to the recording of holographic sound field, playbacks, monitoring, lead to The control of news, and control audio treatment unit (23) carry out gain control, equilibrium, noise reduction, voice increasing to holographic acoustic field signal By force, one or more of processing in hearing correction.

Brief description of the drawings

Fig. 1 is the system block diagram of holographic sound field recording communication device and connected exterior terminal of the present utility model

Fig. 2 is the schematic diagram communicated using holographic sound field recording communication device of the present utility model

Embodiment

With reference to accompanying drawing 1, holographic sound field recording communication device 1 of the present utility model includes two microphone units 11, holography Acoustic field signal processing unit 13, two microphone units 11 are located near left and right duct respectively to be used to gather three-dimensional sound field signal. 12 pairs of collection signals of collection signal processing unit are carried out being processed and converted to data signal, and foregoing digital signals are inputted to holophonic Field signal processing unit 13, holographic acoustic field signal processing unit 13 is handled acoustic field signal, and the signal after processing is encoded After the coding compression of unit 14, by bluetooth transmitting element 15 by the up transmission of holographic acoustic field signal to exterior terminal 2, by outside whole End 2 records the signal, wherein, holographic acoustic field signal is carried out by up send using blue tooth RFCOMM passage.

Further, the holographic sound field recording communication device 1 also includes loudspeaker unit 19, for resetting holographic sound field letter Number, wherein, exterior terminal 2 sends holographic acoustic field signal by bluetooth transmitting element 21 to holographic sound field recording communication device 1, entirely The Bluetooth receptions unit 16 for ceasing sound field recording communication device 1 receives signal, and the decoded unit 17 of signal inputs holophonic after decoding Field signal processing unit 13, holographic acoustic field signal processing unit 13 outputs signal to replay signal processing unit 18, and by raising Sound device unit 19 carries out the playback of holographic sound field.

Further, loudspeaker unit 19 be two, two loudspeaker units 19 respectively with two microphone units 11 Gather into earplug (shown in accompanying drawing 2), user is worn to ears, then gathering holographic sound field by two microphone units 11 believes Number, reset holographic acoustic field signal by two loudspeaker units 19；Loudspeaker unit 19 also can as audio amplifier a part.

Further, holographic sound field recording communication device 1 can also synchronize monitoring, the collection holophonic of microphone unit 11 Field signal, acquired signal processing unit 12 to holographic acoustic field signal processing unit 13, holographic acoustic field signal processing unit 13 will Signal is sent to replay signal processing unit 18, then is monitored back the progress playback of holographic acoustic field signal so as to realize by loudspeaker 19 Ring；Wherein, holographic acoustic field signal processing unit 13 can carry out gain control, equilibrium, noise reduction, voice increasing to holographic acoustic field signal By force, the processing such as hearing correction.

Holographic sound field recording communication device 1 can be operated in recording mode, replay mode, listening mode, holographic sound field recording Communication device 1 is provided with mode control button.Holographic audio frequency records replay device and may be simultaneously operated in recording mode and monitoring Pattern, those skilled in the art be will be appreciated that, monitoring is synchronized while Double-ear type sound-recording, person for recording can be made to grasp in real time The change of realistic acoustic field environment, when in face of possible accident, can quickly make a response, and improve security during recording With reliability.

With reference to accompanying drawing 2, another embodiment of the present utility model provides a kind of holographic audio frequency communication system, including network one The holographic sound field recording communication device 1 of side gathers holographic acoustic field signal, by blue tooth RFCOMM passage by holographic acoustic field signal Row is transferred to exterior terminal 2, and exterior terminal 2 sends holographic acoustic field signal to the exterior terminal 2 of network opposite side by network, Again by the exterior terminal 2 by the holographic sound field recording communication device 1 of the descending transmission of holographic acoustic field signal to network opposite side, and by The holographic sound field recording communication device (1) of the other end resets holographic acoustic field signal；Equally, the holographic sound field record of network opposite side Sound communication device 1 and exterior terminal 2 also can carry out reverse communication by network, so as to realize that holographic sound field of the present utility model is led to News.

Have in exterior terminal 2 and coordinate what holographic sound field recording communication device 1 and holographic sound field recording communication system were used Application program 24, it can be by the bluetooth Transmit-Receive Unit 21 of exterior terminal 2,22, audio treatment unit 23, memory (in figure not Show), communication module (not shown) realize to the recording of holographic acoustic field signal, reset, monitor, share, Communication Control；Equally, Also it can control the holographic acoustic field signal of 23 pairs of audio treatment unit and carry out gain control, equilibrium, noise reduction, speech enhan-cement, hearing correction Deng processing.

Further change as the uplink of the holographic acoustic field signal of the present utility model based on blue tooth RFCOMM passage Enter, one of audio coding decoding mode is using SBC, OPUS, Apt-X, AAC, to realize the low delay of uplink, Whole frequency band and many Channel transfer, greatly promotes the fidelity of upward signal；Specifically, Bluetooth transmission of the present utility model can be real based on CSR platforms It is existing, wherein RFCOMM channel datas are sent to DSP processing, processing by the protocol stack processing unit (stack) of CSR platforms Protocol stack processing unit (stack) is returned after finishing, then is transmitted.

Claims (10)

1. a kind of holographic sound field recording communication device (1) based on bluetooth, including two microphone units (11) be located at respectively it is left, It is used to gather three-dimensional sound field signal near right ear canal, collection signal processing unit (12) is processed and converted to collection signal Data signal, foregoing digital signals are inputted to holographic acoustic field signal processing unit (13), holographic acoustic field signal processing unit (13) Acoustic field signal is handled, after the encoded unit of the signal after processing (14) coding compression, passes through the first bluetooth transmitting element (15) the up transmission of holographic acoustic field signal is recorded into the signal to exterior terminal (2) by exterior terminal (2), wherein, using bluetooth Holographic acoustic field signal is carried out up send by RFCOMM passages.

2. the holographic sound field recording communication device (1) as claimed in claim 1 based on bluetooth, is characterised by：Including loudspeaker Unit (19), for resetting holographic acoustic field signal, wherein, exterior terminal (2) is by the second bluetooth transmitting element (21) to holography Sound field recording communication device (1) sends holographic acoustic field signal, the Bluetooth receptions unit (16) of holographic sound field recording communication device (1) Signal is received, is inputted after the decoded unit of signal (17) decoding at holographic acoustic field signal processing unit (13), holographic acoustic field signal Reason unit (13) outputs signal to replay signal processing unit (18), further carries out holographic sound field by loudspeaker unit (19) Playback.

3. the holographic sound field recording communication device (1) as claimed in claim 2 based on bluetooth, is characterised by：Loudspeaker unit (19) it is two, two loudspeaker units (19) are gathered into earplug with two microphone units (11) respectively.

4. holography sound field recording communication device (1) as claimed in claim 2, is characterised by：Loudspeaker unit (19) is used as sound A part for case.

5. the holographic sound field recording communication device (1) based on bluetooth as described in one of claim 2-4, is characterised by：It is transaudient The holographic acoustic field signal of device unit (11) collection, the extremely holographic acoustic field signal processing unit (13) of acquired signal processing unit (12), Holographic acoustic field signal processing unit (13) sends the signal to replay signal processing unit (18), then will by loudspeaker unit (19) Holographic acoustic field signal reset realizing monitoring winding.

6. the holographic sound field recording communication device (1) as claimed in claim 5 based on bluetooth, is characterised by：Holographic sound field letter Number processing unit (13) can carry out one in gain control, equilibrium, noise reduction, speech enhan-cement, hearing correction to holographic acoustic field signal Item or multinomial processing.

7. the holographic sound field recording communication device (1) as claimed in claim 5 based on bluetooth, is characterised by：The holographic sound field Recording communication device (1) can be operated under recording mode, replay mode, listening mode, the holographic sound field recording communication device (1) It is provided with mode control button.

8. the holographic sound field recording communication device (1) as claimed in claim 5 based on bluetooth, is characterised by：Holographic audio frequency is recorded Replay device processed is simultaneously operable in recording mode and listening mode.

9. a kind of holographic sound field recording communication system based on bluetooth, be included in network two ends as described in claim 2-8 Holographic sound field recording communication device (1), exterior terminal (2), holographic sound field recording communication device (1) collection of network one end are holographic Acoustic field signal, exterior terminal (2) is transmitted upstream to by blue tooth RFCOMM passage by holographic acoustic field signal, exterior terminal (2) by Holographic acoustic field signal is sent to the exterior terminal (2) in the network other end by network, then by the exterior terminal (2) by holophonic Field signal is descending to be sent to the holographic sound field recording communication device (1) of the network other end, and is recorded by the holographic sound field of the other end Sound communication device (1) resets holographic acoustic field signal；Equally, the holographic sound field recording communication device (1) of the network other end and outside Terminal (2) also can carry out reverse communication by network.

10. a kind of holographic sound field recording communication exterior terminal (2) based on bluetooth, it includes bluetooth Transmit-Receive Unit (21,22), sound Frequency processing unit (23), memory, communication module, are characterised by：Also include the holophonic coordinated as described in claim 1-8 Field recording communication device (1) and/or holographic sound field recording communication systematic difference program (24) as claimed in claim 9, its It can be realized by the bluetooth Transmit-Receive Unit (21,22) of exterior terminal, audio treatment unit (23), memory, communication module to complete The recording for ceasing sound field, the control resetting, monitor, sharing, communicating, and control audio treatment unit (23) is to holographic acoustic field signal Carry out one or more of processing in gain control, equilibrium, noise reduction, speech enhan-cement, hearing correction.