CN206640740U - Wear-type audio collecting device and headphone - Google Patents

Abstract

The utility model provides a kind of wear-type audio collecting device and headphone.Wherein, in wear-type audio collecting device, audio signal is gathered in the first pickup passage by the first sound pick-up, by way of the second sound pick-up gathers audio signal in the second pickup passage, quieted down environment so as to simulate human ear；And wear-type audio collecting device need not use headform and can directly be worn on the real number of people and use, so as to solve the problems, such as that 3D audio collections lack portability in correlation technique, improve the portability of harvester while 3D audio collections are realized.

Description

Wear-type audio collecting device and headphone

Technical field

Audio collection field is the utility model is related to, in particular to wear-type audio collecting device and wear-type ear Machine.

Background technology

3D audios, it is that audience can experience the music transmitted from all directions, music transmits from left side sometimes, sometimes again The crown has been arrived, or has been moved from left to right, and has been risen slowly from bottom to top sometimes, has there is spatial impression.3D audios, i.e. audio reduce people Auditory effect of the ear to audio.

The basic sound positioning principle of human ear is Interaural Intensity Difference (Interaural Intensity Difference, referred to as IID) and ITD (Interaural Time Difference, referred to as ITD).Ear beyond IID spans are relatively near from source of sound, the intensity of sound received is higher than opposite side, feels that sound is bigger by one A bit.ITD refers to the difference in orientation, the time that sound reaches two ears is had difference, people can think that sound is located at arrival time earlier Beyond, IID+ITD result be source of sound navigate to using the ear of hearer two this line as the cone of axis within the scope of.Figure 1 is according to the schematic diagram of the 3D audios of correlation technique, as shown in figure 1, the distance of sound source to the left and right ear of intelligent is different, is reached Time is different, and having time is poor, is exactly ITD described above；Meanwhile the intensity of sound of sound source arrival left and right ear is also different, just It is that our usually described volumes are different, is exactly IID described above.These differences are although small, but our human ear It is still to differentiate, by differentiating these differences, we are with regard to that can orient the information such as the position of sound source, size, distance.

In addition influence us and judge transmission function (the Head Related for also having head association of sound positioning Transfer Function, referred to as HRTF).HRTF describes transmitting procedure of the sound wave from sound source to ears.In fact from certain The acoustical signal that the sound source in one orientation is sent have passed through the transmitting procedure of complexity, acoustical signal and hearer before the ear-drum of hearer is reached Head, shoulder and trunk, there occurs the acoustics effect such as reflection, refraction, diffraction and scattering, these positions pair of human body for auricle The modulating action of acoustical signal can be unified represent the transfer function H RTF associated with head with a function.

If we quiet down, recorded, these IID, ITD and HRTF Data Enters of sound can also be entered, then broadcast When putting, just user's 3d space audio can be given.

IID, ITD and HRTF information of prior art sound intermediate frequency are by headform come what is gathered, and this acquisition mode is only Suitable for fixed place, portable 3D audio collections can not be realized.

Utility model content

The utility model provides a kind of wear-type audio collecting device and headphone, at least to solve correlation technique Middle 3D audio collections lack the problem of portability.

According to one side of the present utility model, there is provided a kind of wear-type audio collecting device, including the first earmuff, Two earmuffs and the head beam for connecting first earmuff and second earmuff, the wear-type audio collecting device also include：Sound Frequency acquisition component, the audio collection component include：First audio collection component, the second audio collection component and audio transmission list Member, wherein,

The first audio collection component is arranged on the outside on first earmuff；The second audio collection component is set Put the outside on second earmuff；

The first audio collection component includes：First pickup passage and be arranged in the first pickup passage first Sound pick-up；The second audio collection component includes：Second pickup passage and be arranged in the second pickup passage second Sound pick-up；

The audio transmission unit electrically connects with first sound pick-up and second sound pick-up, for by described first The audio signal that sound pick-up and second sound pick-up collect is stored and transferred out.

Alternatively, the shape of the first pickup passage and the second pickup passage is similar to the shape of human body external auditory meatus Shape, length are 1.5cm~2.5cm.

Alternatively, the shape of the first pickup passage and the second pickup passage is approximately tubulose, length 1.5cm ~2.5cm.

Alternatively, first sound pick-up is arranged on the one end on the close head of the first pickup passage；Described second Sound pick-up is arranged on the one end on the close head of the second pickup passage.

Alternatively, the first pickup passage and the second pickup passage are silica gel material.

Alternatively, the first audio collection component also includes：With the one end on the remote head of the first pickup passage First pickup of connection is wide；The second audio collection component also includes：With the one of the remote head of the second pickup passage Hold the second pickup of connection wide.

Alternatively, the wide profile of wide and described second pickup of first pickup is cylinder, the conical surface, hyperboloid, hyperbolic throwing Any one in object plane or Irregular Boundary Surface.

Alternatively, the wear-type audio collecting device also includes：Audio processing chip, for receiving and handling described The audio signal that one audio collection component and the second audio collection component collect.

Alternatively, the audio transmission unit includes：The wire transmission list of audio signal is sent by wire transmission mode Member, and/or, pass through the wireless transmission unit of wireless transmission method transmission audio signal.

According to other side of the present utility model, there is provided a kind of headphone, including above-mentioned wear-type audio Harvester.

By the utility model, the wear-type audio collecting device of use includes audio collection component, the audio collection group First audio collection component of part is arranged on the outside on the first earmuff, and the second audio collection component is arranged on the second earmuff Outside；First audio collection component includes：First pickup passage and the first sound pick-up being arranged in the first pickup passage；Second Audio collection component includes：Second pickup passage and the second sound pick-up being arranged in the second pickup passage；Audio transmission unit Electrically connected with the first sound pick-up and the second sound pick-up, the audio signal for the first sound pick-up and the second sound pick-up to be collected is deposited Store up and transfer out.The utility model gathers audio signal by the first sound pick-up in the first pickup passage, by the second ten Sound device gathers the mode of audio signal in the second pickup passage, is quieted down environment so as to simulate human ear；And wear-type audio Harvester need not use headform and can directly be worn on the real number of people and use, so as to solve in correlation technique 3D audio collections lack the problem of portability, and the portability of harvester is improved while 3D audio collections are realized.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application, Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper Limit.In the accompanying drawings：

Fig. 1 is the schematic diagram according to the 3D audios of prior art；

Fig. 2 is the structural representation according to the wear-type audio collecting device of the utility model embodiment.

Embodiment

Describe the utility model in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not rushing In the case of prominent, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing, " second " etc. is for distinguishing similar object, without for describing specific order or precedence.

A kind of wear-type audio collecting device is provided in the present embodiment.Fig. 2 is according to the utility model embodiment The structural representation of wear-type audio collecting device, as shown in Fig. 2 the device includes：First earmuff 10, the second earmuff 20, with And the head beam 30 of the first earmuff 10 of connection and the second earmuff 20；First earmuff 10 and the second earmuff 20 is mutually symmetrical is arranged on a beam 30 both sides.

The wear-type audio collecting device also includes：It is arranged on the first audio collection component 40 in the outside of the first earmuff 10； It is arranged on the second audio collection component 50 in the outside of the second earmuff 20；And for storing and transmitting the first audio collection component 40 The audio transmission unit 60 of the audio signal collected with the second audio collection component 50.

Audio transmission unit 60 can be arranged on inside the first earmuff 10, inside the second earmuff 20 or inside head beam 30 Optional position, and by the wire inside head beam 30 respectively with the first audio collection component 40 and the second audio collection component 50 electrical connections.

Above-mentioned wear-type audio collecting device, which can be worn on headform, to be used, and can also be worn on the real number of people Upper use.In order to simulate the effect that human ear quiets down, IID, ITD and HRTF information of audio are collected, in the present embodiment, is employed The the first audio collection component 40 and the second audio collection component 50 of special construction.

Its structure will be described and be illustrated by taking the first audio collection component 40 as an example below, the second audio collection component 50 and first audio collection component 40 be symmetricly set on two earmuffs of wear-type audio collecting device；Second audio collection group Part 50 is identical with the structure of the first audio collection component 40, therefore, will not be described in great detail the structure of the second audio collection component 40.

Reference picture 2, the first audio collection component 40 include：First pickup passage 41 and it is arranged on the first pickup passage 41 The first interior sound pick-up 42.The effect of the first pickup passage 41 is that simulation human ear quiets down environment, and the first sound pick-up 42 is placed in the Simulated person's ear quiets down in environment in one pickup passage 41, you can to collect the audio signal of similar human ear uppick, these Audio signal carries IID, ITD and HRTF information of audio.

Just because of the wear-type audio collecting device in the present embodiment when gathering audio, it is not necessary to reuse auditory model And can directly be worn on the real number of people and use, or be placed on the support suitable with true people's area of bed, so that While being collected 3D audio collections, the portability of device is enhanced.The enhancing of the device portability, contribute to the device It is combined with traditional headset equipment, so as to realize the application of more scenes.For example, the wear-type audio collecting device is with showing Some head machines are combined, and an equipment is enhanced recording effect and voice frequency listening for 3D audio collections and 3D audio playback functions Experience.

Alternatively, the shape of the first pickup passage 41 and the second pickup passage 51 is similar to the shape of human body external auditory meatus, can To be made of the pour mask of real human body external auditory meatus, material is preferably silica gel, and its length also simulates the length of real human body external auditory meatus Degree, grown for 1.5cm~2.5cm.The other parts use of earmuff outside first pickup passage 41 and the second pickup passage 51 every Either sponge or the colloid filling of sound material.

In order to reduce design and manufacture difficulty, the shape of the first pickup passage 41 and the second pickup passage 51 can be reduced to The shape of approximate tubulose, with easy to process.Its length simulates the length of real human body external auditory meatus, is grown for 1.5cm~2.5cm.

Alternatively, the first sound pick-up 42 is arranged on the one end on the close head of the first pickup passage 41, i.e. the first pickup is led to The bottom in road 41；Second sound pick-up 52 is arranged on the one end on the close head of the second pickup passage 51, i.e. the second pickup passage 51 Bottom.

Using the wear-type audio collecting device with the first pickup passage 41 and the second pickup passage 51 of the present embodiment, The environment that quiets down of human ear external auditory meatus can be simulated；In real human ear quiets down, sound also suffer from the enhancing of auricle, reflection, Stop etc. influences., can also be in one of the first pickup passage 41 away from head in order to further simulate influence of the auricle to sound End, i.e. the pickup of external connection first of the first pickup passage 41 is wide, in second one end of pickup passage 51 away from head, i.e., second The pickup of external connection second of pickup passage 51 is wide.Wherein, the profile that the first pickup is wide and the second pickup is wide is cylinder, the conical surface, Any one in hyperboloid, hyperbolic-parabolic or Irregular Boundary Surface.First pickup is wide and the second pickup exterior feature can protrude earmuff, Can also be by the way that the housing depressions of earmuff be formed into corresponding curved surface.

Alternatively, the wear-type audio collecting device in the present embodiment also includes：Audio processing chip, the audio frequency process core Piece is connected with audio transmission unit, for receiving and handling the first audio collection component and the second audio collection component collects Two-way audio signal.Audio processing chip uses 3D audio processing chips commonly known in the art, the processing to audio signal The coding that is including but not limited to carried out using known technology, compression, storage, and decoding to 3D audio files, decompression etc. Processing.

Alternatively, audio transmission unit can send the audio signal collected to sound using wired or wireless mode Frequency process chip.It is for instance possible to use Wireless Fidelity (WIFI) module or bluetooth module realize the Wireless transceiver of audio signal.

A kind of headphone is additionally provided in the present embodiment, and the headphone is adopted including above-mentioned wear-type audio Acquisition means.Wherein, the earmuff of the left earphone of headphone is the first above-mentioned earmuff, the earmuff of the right earphone of headphone For the second above-mentioned earmuff.By said structure, 3D audio collection functions are added in headphone.

In order that the description of the utility model embodiment is clearer, it is described and says with reference to preferred embodiment It is bright.

People has two ears, can but position the sound from three dimensions, and this has benefited from analysis of the human ear to voice signal System, i.e. HRTF.The signal that human ear (before eardrum) is passed to from space any point can be described with a filtering system, sound What source+wave filter obtained is exactly the voice signal before two ear drum membranes.This Transmission system is a flight data recorder, and we need not be concerned about Sound is how to be delivered to ears, and need to only be concerned about the difference of source of sound and binaural signal.It is empty that if we obtain this group description Between information wave filter (transmission function), i.e. HRTF, just can reduce the voice signal from this orientation of space and (such as pass through alliteration Road earphone).It is understood that mono- critically important factor of HRTF, is exactly that there occurs reflection, folding for auricle except IID and ITD is acted on Penetrate, the acoustics effect such as diffraction and scattering.Sound wave can rebound when running into object.

Our ear is interior empty oval type；Therefore, the sound wave of different wave length produces different effects in external ear accordingly Should.One section 2 centimetres of passage between eardrum and auricle, resonance caused by hollow structure can great gain 5kHz news Number, the exactly most sensitive frequency range of people's sense of hearing.External auditory meatus is the position most sensitive to voice signal.The other end of external auditory meatus is drum Film is closed, and forms the closed tube chamber in one end, and any closed or open tube chamber has a fixed resonant frequency, duct also not example Outside.This causes the sound into human ear to strengthen.Using this human ear aufbauprinciple, can be used for preferably collecting sound.

In the preferred embodiment, two emulation external auditory meatus are placed respectively in the outside of left and right earphone (on being respectively equivalent to The the first pickup passage 41 and the second pickup passage 51 stated).Length can be similar to human ear external auditory meatus length, i.e. and 1.5cm~ 2.5cm.Model structure, shape are identical with human body external auditory meatus.Then respectively left and right emulation the most inboard of external auditory meatus model put Microphone (i.e. sound pick-up), i.e. left and right each one, totally two.So emulation external auditory meatus model, which can not only strengthen microphone, to receive The sound of collection, moreover it is possible to more really simulate the acoustic information received by human ear.

So 3D quiets down technology, is exactly in radio reception, just contains these influence factors of IID/ITD.Because gather audio When, for two microphones just in left and right ear both sides, they arrive the position of sound source, experience the intensity of sound source, and HRTF is to sound The effect (because setting emulation external auditory meatus) of frequency, is much the same with our voice datas of human ear impression.Thus can be with The fully environmental data and sound bearing of record at that time, forms 3D voice datas.

Voice data is transported to intelligent earphone or the audio frequency processing system of outside, by specific algorithm, so as to synthesize The audio of one two-channel, is stored.When playing, because we have recorded various voice datas when quieting down, During broadcasting, the experience sense of user's 3D audios will be given.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of wear-type audio collecting device, including the first earmuff, the second earmuff and connection first earmuff and described the The head beam of two earmuffs, the wear-type audio collecting device also include：Audio collection component, it is characterised in that the audio is adopted Collection component includes：First audio collection component, the second audio collection component and audio transmission unit, wherein,

The first audio collection component is arranged on the outside on first earmuff；The second audio collection component is arranged on Outside on second earmuff；

The first audio collection component includes：First pickup passage and the first pickup being arranged in the first pickup passage Device；The second audio collection component includes：Second pickup passage and the second pickup being arranged in the second pickup passage Device；

The audio transmission unit electrically connects with first sound pick-up and second sound pick-up, for by first pickup The audio signal that device and second sound pick-up collect is stored and transferred out.

2. device according to claim 1, it is characterised in that the shape of the first pickup passage and the second pickup passage Shape is similar to the shape of human body external auditory meatus, and length is 1.5cm~2.5cm.

3. device according to claim 1, it is characterised in that the shape of the first pickup passage and the second pickup passage Shape is approximately tubulose, and length is 1.5cm~2.5cm.

4. according to Claims 2 or 3 described device, it is characterised in that first sound pick-up is arranged on first pickup and led to The one end on the close head in road；Second sound pick-up is arranged on the one end on the close head of the second pickup passage.

5. device according to claim 1, it is characterised in that the first pickup passage and the second pickup passage are equal For silica gel material.

6. according to the device any one of claim 1,2,3 or 5, it is characterised in that the first audio collection component Also include：The first pickup being connected with the one end on the remote head of the first pickup passage is wide；The second audio collection group Part also includes：The second pickup being connected with the one end on the remote head of the second pickup passage is wide.

7. device according to claim 6, it is characterised in that outside the wide and described second pickup exterior feature of first pickup Shape is any one in cylinder, the conical surface, hyperboloid, hyperbolic-parabolic or Irregular Boundary Surface.

8. device according to claim 6, it is characterised in that the wear-type audio collecting device also includes：At audio Chip is managed, the audio letter collected for receiving and handling the first audio collection component and the second audio collection component Number.

9. device according to claim 8, it is characterised in that the audio transmission unit includes：By wire transmission side Formula sends the wire transmission unit of audio signal, and/or the wireless transmission unit of audio signal is sent by wireless transmission method.

10. a kind of headphone, it is characterised in that adopted including wear-type audio as claimed in any one of claims 1-9 wherein Acquisition means.