CN104168534A - Holographic audio device and control method - Google Patents
Holographic audio device and control method Download PDFInfo
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- CN104168534A CN104168534A CN201410440363.7A CN201410440363A CN104168534A CN 104168534 A CN104168534 A CN 104168534A CN 201410440363 A CN201410440363 A CN 201410440363A CN 104168534 A CN104168534 A CN 104168534A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
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Abstract
The invention relates to a holographic audio device and a control method. A microphone unit collects a three-dimensional sound field signal, a collected signal processing module is used for processing the collected signal and converting the collected signal into a digital signal, the digital signal is input into a holographic sound field signal processing unit, the holographic sound field signal processing unit processes a sound field signal, and the processed signal is transmitted to a host through a network after source coding compression. The host transmits the signal to the holographic audio device through the network, the signal is input into the holographic sound field signal processing unit after source decoding, the holographic sound field signal processing unit outputs the signal to a playback signal processing module, and audio playback is performed through an audio playback unit.
Description
Technical field
The present invention relates to a kind of holographic audio frequency device and control method.
Background technology
The tradition way of recording comprises single Mike's recording, stereophonic recording (AB, XY, MS, ORTF).Single Mike's recording is the easiest, but sound field is also dull; The original intention of stereophonic recording is to build the more stereophonic field of horn of plenty, in microphone arrangement, there is diversified mode, all the apperceive characteristic of two ears to sound of attempting to simulate people, such as time delay, amplitude difference, phase place etc., but be to be just difficult to reach the real auditory perceptual of simulation by microphone putting position.Emulation number of people recording energy is enough realized the embodiment true to nature of immersion three-dimensional sound field, but being mainly still present at present some specialized laboratories uses as testing tool, record for audio frequency and video widely, the one, be very inconvenient to use, also simultaneously very expensive (to comprise the emulation number of people, sound pick-up outfit, 1,000,000 Euros of left and right of a set of needs such as treatment facility), in addition, the current emulation number of people is mainly used in the test of the communication apparatus, be not intended to the perception of people's ear stereophonic field object make, its quality, still there is very large difference with the true number of people in structure, these differences can finally affect the sound field effect of recording.
On the other hand, the fast development of mobile broadband, the common tool such as mobile phone, panel computer of ordinary consumer has had audio frequency and video to record ability except making a phone call, and a lot of digital products such as recording pen, the camera that can make a video recording etc. in most cases these equipment all carry out recorded voice based on internal microphone, tonequality is poor on the one hand for these built-in microphones, and sound field represents also non-constant of ability simultaneously.
Also occurred that at present some provide the interface equipment of stereophonic recording for equipment such as mobile phones, these equipment interfaces also have very large distance from above-mentioned professional stereophony microphone, let alone immersion three-dimensional sound field.Except audio recording playback, in the video record playback such as conventional mobile phone, be also there is no the collection playback of sound field and the ability of control, cause video tastes entirety not good.In fields such as video monitoring, online education, network audio-video communications, or there is no at all audio capability, have plenty of simple monophonic audio, have plenty of common stereoly, in a word, the demand on the spot in person that do not reach is experienced in the sense of hearing far away.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of holographic audio frequency device and control method, can realize recording and playback holophonic field signal.
Based on same inventive concept, the present invention has two independently technical schemes:
1, a holographic audio frequency device, comprises the microphone unit that can gather three-dimensional sound field, it is characterized in that: the signal output part of microphone unit connects collection signal processing module, and the signal output part of collection signal processing module connects holophonic field signal processing unit; The signal output part of holophonic field signal processing unit takes back discharge signal processing module, and the signal output part of playback signal processing module connects voice reproducing unit; Holophonic field signal processing unit is circumscribed with information source coding module and source coding module.
Holophonic field signal processing unit is connected to memory module.
2, a control method for said apparatus, is characterized in that:
Microphone unit gathers three-dimensional sound field signal, collection signal processing module processes and converts to digital signal to collection signal, aforementioned digital signal inputs to holophonic field signal processing unit, holophonic field signal processing unit is processed acoustic field signal, signal after treatment, after information source compression coding, is sent to main frame by network;
Main frame is by network to holographic audio frequency device transmitted signal, and signal is inputted holophonic field signal processing unit after source coding, and holophonic field signal processing unit outputs signal to playback signal processing module, carries out voice reproducing by voice reproducing unit.
It can be WIFI, cable network, WAPI, bluetooth that network between main frame and holographic audio frequency device is connected.
Main frame can be computer, mobile phone.
Main frame is provided with audio processing modules, for acoustic signal being carried out to background noise elimination, echo inhibition processing.
On main frame, can carry out the following application operating relevant to sound field,
Sound field record, store, monitor playback; The video record, monitoring, the playback that comprise sound field; The network communication of sound field; Background noise is eliminated, hearing diagnosis; Strengthen the healthy application of binaural audio based on sound field.
The beneficial effect that the present invention has:
The present invention can effectively realize recording and playback of holophonic field signal.The microphone unit of holographic audio frequency device can gather three-dimensional sound field signal, and holophonic field signal processing unit is processed acoustic field signal, and signal after treatment, after information source compression coding, is sent to main frame by network; The acoustic field signal that main frame also can transmit by network holographic audio frequency device is recorded, and holophonic field signal processing unit is connected to memory module, also can deposit the acoustic field signal of recording.Main frame can be by network to holographic audio frequency device transmitted signal, and signal is inputted holophonic field signal processing unit after source coding, carries out voice reproducing by voice reproducing unit.Holographic audio frequency device also can be monitored separately playback.
Main frame of the present invention can be computer, mobile phone, and it can be WIFI, cable network, WAPI, bluetooth that the network between main frame and holographic audio frequency device is connected, and further facilitates recording and playback of holophonic field signal.Main frame of the present invention is provided with audio processing modules, can carry out background noise elimination, echo inhibition processing to acoustic signal, can effectively promote the quality of acoustic field signal.
Brief description of the drawings
Fig. 1 is the schematic block circuit diagram of holographic audio frequency device of the present invention and main frame.
Embodiment
As shown in Figure 1, holographic audio frequency device comprises the microphone unit that can gather three-dimensional sound field, microphone unit comprise based on earphone or based on dummy head, but be not limited to this.Carry out sound field collection based on microphone unit, can monitor timely winding simultaneously.
The signal output part of microphone unit connects collection signal processing module, and the signal output part of collection signal processing module connects holophonic field signal processing unit; The signal output part of holophonic field signal processing unit takes back discharge signal processing module, and the signal output part of playback signal processing module connects voice reproducing unit; Holophonic field signal processing unit is circumscribed with information source coding module and source coding module.Holophonic field signal processing unit is circumscribed with WIFI module, and holophonic field signal processing unit is connected to memory module.
Microphone unit gathers three-dimensional sound field signal, collection signal processing module processes and converts to digital signal to collection signal, aforementioned digital signal inputs to holophonic field signal processing unit, holophonic field signal processing unit is processed acoustic field signal, signal after treatment, after information source compression coding, is sent to main frame by network; The acoustic field signal that main frame can transmit by network holographic audio frequency device is recorded, and holophonic field signal processing unit is connected to memory module, also deposits the acoustic field signal of recording.
Main frame is by network to holographic audio frequency device transmitted signal, and signal is inputted holophonic field signal processing unit after source coding, and holophonic field signal processing unit outputs signal to playback signal processing module, carries out voice reproducing by voice reproducing unit.Holographic audio frequency device also can be monitored separately playback.
Main frame can be computer, mobile phone, in the present embodiment, adopts mobile phone as main frame.It can be WIFI, cable network, WAPI, bluetooth that network between main frame and holographic audio frequency device is connected.Main frame is provided with audio processing modules, for acoustic signal being carried out to background noise elimination, echo inhibition processing.
On main frame, can carry out the following application operating relevant to sound field,
Sound field record, store, monitor playback; The video record, monitoring, the playback that comprise sound field; The network communication of sound field; Background noise is eliminated, hearing diagnosis; Strengthen the healthy application of binaural audio based on sound field.
As application scenarioss such as sound field communication, monitoring playback, sound field need to be rebuild out at user side, sound field rebuilding end might not be recorded end for same equipment with sound field.When playback end is during based on earphone, be personal audio and communication scenes, if now with record end for same equipment, need to process the acoustics isolation of microphone and headphone unit, and the thorough and acoustic echo Processing for removing that will carry out of isolation; When playback end is when recording end and do not overlap and be speaker system, corresponding is entertainment medium system, does not need to carry out the processing of real-time echo elimination; When playback end is speaker system, and with record hold together with time (such as the sound field real time communication based on speaker system), need to carry out comparatively complicated acoustic echo Processing for removing.
Claims (7)
1. a holographic audio frequency device, comprises the microphone unit that can gather three-dimensional sound field, it is characterized in that: the signal output part of microphone unit connects collection signal processing module, and the signal output part of collection signal processing module connects holophonic field signal processing unit; The signal output part of holophonic field signal processing unit takes back discharge signal processing module, and the signal output part of playback signal processing module connects voice reproducing unit; Holophonic field signal processing unit is circumscribed with information source coding module and source coding module.
2. holographic audio frequency device according to claim 1, is characterized in that: holophonic field signal processing unit is connected to memory module.
3. a control method for device described in claim 1, is characterized in that:
Microphone unit gathers three-dimensional sound field signal, collection signal processing module processes and converts to digital signal to collection signal, aforementioned digital signal inputs to holophonic field signal processing unit, holophonic field signal processing unit is processed acoustic field signal, signal after treatment, after information source compression coding, is sent to main frame by network;
Main frame is by network to holographic audio frequency device transmitted signal, and signal is inputted holophonic field signal processing unit after source coding, and holophonic field signal processing unit outputs signal to playback signal processing module, carries out voice reproducing by voice reproducing unit.
4. method according to claim 3, is characterized in that: it can be WIFI, cable network, WAPI, bluetooth that the network between main frame and holographic audio frequency device is connected.
5. method according to claim 4, is characterized in that: main frame can be computer, mobile phone.
6. method according to claim 5, is characterized in that: main frame is provided with audio processing modules, for acoustic signal being carried out to background noise elimination, echo inhibition processing.
7. method according to claim 6, is characterized in that: on main frame, can carry out the following application operating relevant to sound field,
Sound field record, store, monitor playback; The video record, monitoring, the playback that comprise sound field; The network communication of sound field; Background noise is eliminated, hearing diagnosis; Strengthen the healthy application of binaural audio based on sound field.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440363.7A CN104168534A (en) | 2014-09-01 | 2014-09-01 | Holographic audio device and control method |
| PCT/CN2015/000557 WO2016033918A1 (en) | 2014-09-01 | 2015-08-04 | Holographic audio device and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410440363.7A CN104168534A (en) | 2014-09-01 | 2014-09-01 | Holographic audio device and control method |
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| CN104168534A true CN104168534A (en) | 2014-11-26 |
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| CN201410440363.7A Pending CN104168534A (en) | 2014-09-01 | 2014-09-01 | Holographic audio device and control method |
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| WO (1) | WO2016033918A1 (en) |
Cited By (6)
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| WO2016033918A1 (en) * | 2014-09-01 | 2016-03-10 | 北京塞宾科技有限公司 | Holographic audio device and control method |
| WO2016033919A1 (en) * | 2014-09-01 | 2016-03-10 | 北京塞宾科技有限公司 | Holographic audio recording and playback method |
| WO2016033920A1 (en) * | 2014-09-01 | 2016-03-10 | 北京塞宾科技有限公司 | Video and audio acquisition method |
| WO2016045233A1 (en) * | 2014-09-28 | 2016-03-31 | 北京塞宾科技有限公司 | Communication device capable of collecting acoustic field information and communication method |
| CN106126185A (en) * | 2016-08-18 | 2016-11-16 | 北京塞宾科技有限公司 | A kind of holographic sound field recording communication Apparatus and system based on bluetooth |
| CN109660347A (en) * | 2019-02-24 | 2019-04-19 | 陕西师范大学 | A kind of Digital Audio Transmission system based on quantum cryptography |
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| CN101001485A (en) * | 2006-10-23 | 2007-07-18 | 中国传媒大学 | Finite sound source multi-channel sound field system and sound field analogy method |
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| Publication number | Publication date |
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| WO2016033918A1 (en) | 2016-03-10 |
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Application publication date: 20141126 |