CN205911012U - Modified emulation number of people recording device - Google Patents
Modified emulation number of people recording device Download PDFInfo
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- CN205911012U CN205911012U CN201620545163.2U CN201620545163U CN205911012U CN 205911012 U CN205911012 U CN 205911012U CN 201620545163 U CN201620545163 U CN 201620545163U CN 205911012 U CN205911012 U CN 205911012U
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Abstract
The utility model provides a modified emulation number of people recording device, including the emulation number of people to and symmetrical the setting in the class people ear collection sound ware of these emulation number of people both sides, wherein the auricle of type people's ear collection sound ware is bigger by 13 than true man auricle, and the symmetrical type people's ear collection sound ware that sets up level respectively slopes forward 30~45. In this way, the utility model discloses can strengthen the sound sensitivity in front and back position when the pickup, the acoustic ratio example is poor around increaseing for the 3D effect sound recorded position resolution around the audio -video is showing and is strengthening.
Description
Technical field
The utility model is related to 3d sound processing techniques field, more particularly to a kind of improved emulation number of people recording dress
Put.
Background technology
Emulation number of people recording is a kind of advanced 3d audio sound-recording technical solution, and this recording technology can pass through ear
Acquisition auditory localization effect listened to by machine, reappears virtual sound and becomes closer to truly, so that hearer experiences real sound
Field sense.Existing number of people recording technology is based on headform, using record type sound pick-up being placed into number of people ear location,
Or sound pick-up is placed into the record type of simulation people's ear drum membrane position.
Through studying actual test, it is obvious to there are some in making with using in aforementioned two class emulation number of people recording devices
Shortcoming so that be also easy to produce in smudgy before and after acoustic image in audition, motion positioning not clear situations such as.
Utility model content
The utility model, mainly solving the technical problems that providing a kind of improved emulation number of people recording device, can make 3d
Sound is smudgy before and after acoustic image in making, be also easy to produce the not clear effect of positioning in motion significantly improves.
For solving above-mentioned technical problem, the technical scheme that the utility model adopts is: provides a kind of improved emulation
Number of people recording device, including the emulation number of people, and is symmetricly set in the described class human ear sound collector emulating number of people both sides, described class
The length and width of the auricle of human ear sound collector is bigger by 1/3 than the length mean value of true man auricle and width mean value respectively, described
Symmetrically arranged class human ear sound collector respectively horizontal forward tilt 30 °～45 °.
Wherein, one end of described class human ear sound collector is trumpet-shaped auricle, and the other end is connected with microphone, between two ends
In rod-like structure.
Preferably, the distance between the auricle center of described class human ear sound collector and microphone are 3.4cm.
Preferably, the distance between described symmetrically arranged class human ear sound collector is 15cm.
It is different from the situation of prior art, the beneficial effects of the utility model are: the sound to front and back position in pickup
Sensitivity is strengthened, and before and after increasing, acoustic ratio example difference is so that the 3d effect sound recorded significantly increases in acoustic image front and back position resolution capability.
Brief description
Fig. 1 is a kind of schematic diagram of common emulation number of people recording device；
Fig. 2 is a kind of schematic diagram of the front view of improved emulation number of people recording device of the utility model embodiment；
Fig. 3 is a kind of schematic diagram of the top view of improved emulation number of people recording device of the utility model embodiment；
Fig. 4 is the schematic diagram of class human ear sound collector in the utility model embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of the utility model protection.
So-called emulation number of people recording is it is simply that be placed in one and the several leading living vacation of true man two microtelephones
Close to the position of people's ear drum membrane on the number of people or in duct, simulate the whole process that human ear hears sound.This headform and true man
Similar, the influential organ with audition such as the auricle of simulation people, duct, or even be also adopted by and human body at the aspect such as skin and bone
Closest material makes, and final purpose is as true as possible simulation human ear all hrtfs suffered when hearing sound
The impact of (head related transfer function, head-related transfer function).Generally, by this record
The voice signal that mixer is recorded to does not need plus excessive anaphase effect is processed, and just can produce virtual 3d effect sound, this
Effect sound almost can ideally reduce 360 ° of sound fields in recording place, makes auditor for example on the spot in person.
Common, emulation number of people recording device is made based on simulated person's ear structure, two miniature sound pick-ups, has
Body can be microphone, be placed in the position close to eardrum in the duct of the headform similar with true man, and simulation human ear is heard
The whole process of sound, makes sound that people hear and hears that in nature, various sound are the same, through auricle, external ear, duct,
It is transmitted to ear drum membrane, is perceived by cerebral nerve, as shown in Figure 1.
Mankind's audition be long-term in nature learning and form experience, the natural phonation inherently sound source of a 3d, people
The basic sound positioning principle of ear be based on both sides intensity of sound difference and both sides sound time delay difference be iid and itd.iid
Side ear institute close to source of sound for (interaural intensity difference, the Interaural Intensity Difference) span
The intensity of sound receiving is higher than opposite side, feels that sound is some larger.Itd (interaural time difference, both sides
Sound time postpones difference) refer to the difference in orientation, make the time that sound reaches two ears have difference, people can think that sound is located at arrival
Time earlier beyond, the result of iid+itd is that source of sound is navigated to the cone model as axis for the line between hearer two ear
Within enclosing.
When many, the sound that people hears not is that straight line enters ear, but has passed through several secondary reflections and just entered brain.
During Acoustic Wave Propagation, acoustic wave energy can weaken, and along with reflecting the noise reduction causing and delayed-action, sound has had
Change, the effect that this reflection mixes is referred to as interaction reverberation.Particularly among the environment of closing, can substantially experience sound
The change of tune is light.Against these changes, people just can judge sound whether through reflection, or even can judge the position of wall and door
The details such as opening and closing orientation, and so as to the environment around determining.
General emulation number of people recording device shown in Fig. 1 can simulate the audition state of human ear, in the left and right position reappearing sound source
Put, the aspect effect such as distance, spatial impression fair；But smudgy on acoustic image front and back position, motion in be also easy to produce positioning
Not clear situation.For example, sounding position, when auditor dead ahead or rear, does not have direction feeling；In moving sound motion, suspend
After sounding, during sounding, position positioning can be lost again.The reason produce this phenomenon is, during earphone audition, sounding point is in ear
Surface, is concentrated mainly on auricle central point, and general emulation number of people recording device is directly to simulate human ear morphological feature as much as possible,
Simply sound pick-up is put into eardrum position.Do not account for duct and can play conduction and the double action of resonance in audition；
Also ignore the difference of microphone and people's ear drum membrane, microphone receive information is comprehensive synthetic video, people's ear drum membrane is sensation
The various features such as sound frequency, phase place, time delay.
The frequency of sound wave scope that generally people can hear is theoretically 20hz to 20khz, the i.e. sound of 1.7 centimetres to 17 meters of wavelength
Ripple.Show, usually, people is most sensitive to the sound in about 2.5khz 5khz according to sound intensity theory and experiment, and low
Frequency and high frequency region susceptibility are lower.This device on the make, takes the 1/3 of most sensitive sound frequency wavelength average, making
Microphone position in duct is defined as 3.4cm, and that is, the distance of auricle central point to microphone is defined as 3.4cm.
Auricle plays an important role in positioning before and after sound, according to the different angles of sound, can strengthen/weaken sound wave energy
Amount, allows the position that people can more accurately judge.Because the binauricular distance of people is 15 cm, when wavelength is more than 15 centimetres
Iit and itd will weaken.The low sound waves of frequency are grown up, and are therefore difficult to judge the position of bass, but can differentiate high pitch easily
Orientation.In fact, auricle is for localization of sound, it is critical that a ring, the people of external ear is not had to judge what sound sent
Position can have difficulties.
Please also refer to Fig. 2 to Fig. 4, the utility model proposes a kind of improved emulation number of people recording device, including emulation
The number of people, and it is symmetricly set in the class human ear sound collector of described emulation number of people both sides, the length of the auricle of described class human ear sound collector
Degree and width are bigger by 1/3 than the length mean value of true man auricle and width mean value respectively, and wherein, normal adult auricle length is about
For 5 to 8 centimetres, width is about 3 to 5 centimetres；Described symmetrically arranged class human ear sound collector respectively horizontal forward tilt 30 °～
45°.
Wherein, one end of described class human ear sound collector is trumpet-shaped auricle, and the other end is connected with microphone, between two ends
In rod-like structure.
It is preferred that the distance between the auricle center of described class human ear sound collector and microphone are 3.4cm.
It is preferred that the distance between described symmetrically arranged class human ear sound collector is 15cm.
By the way, the improved emulation number of people recording device of the utility model embodiment in pickup to front and back
The acoustic sensitivity of position is strengthened, and before and after increasing, acoustic ratio example difference is so that the 3d effect sound recorded is in acoustic image front and back position resolution capability
Significantly increase；Can preferably rely on ears realize horizontal direction positioning, auricle determine before and after, vertical direction positioning, hrtf function
Effect before and after then determining and around sound field, can allow auditor recognize the orientation of enunciator, especially front and back position, motion road
Line isotropy feature.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
The equivalent structure made using the utility model specification and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are all included in the same manner in scope of patent protection of the present utility model.
Claims (4)
1. one kind is improved emulates number of people recording device it is characterised in that including the emulation number of people, and is symmetricly set in described imitative
The class human ear sound collector of true man's head both sides, the length and width of the auricle of described class human ear sound collector is longer than true man auricle respectively
Degree mean value and width mean value big 1/3, described symmetrically arranged class human ear sound collector respectively horizontal forward tilt 30 °～45 °.
2. improved emulation number of people recording device according to claim 1 is it is characterised in that described class human ear sound collector
One end is trumpet-shaped auricle, and the other end is connected with microphone, is in rod-like structure between two ends.
3. improved emulation number of people recording device according to claim 2 is it is characterised in that described class human ear sound collector
The distance between auricle center and microphone are 3.4cm.
4. improved emulation number of people recording device according to claim 1 is it is characterised in that described symmetrically arranged class people
The distance between ear sound collector is 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620545163.2U CN205911012U (en) | 2016-06-07 | 2016-06-07 | Modified emulation number of people recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620545163.2U CN205911012U (en) | 2016-06-07 | 2016-06-07 | Modified emulation number of people recording device |
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| CN205911012U true CN205911012U (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620545163.2U Expired - Fee Related CN205911012U (en) | 2016-06-07 | 2016-06-07 | Modified emulation number of people recording device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540916A (en) * | 2018-05-30 | 2018-09-14 | 出门问问信息科技有限公司 | Bluetooth headset detection method, device and headform based on headform |
| CN109936797A (en) * | 2017-12-15 | 2019-06-25 | 深圳市三诺数字科技有限公司 | Audio frequency apparatus based on human ear simulation architecture |
-
2016
- 2016-06-07 CN CN201620545163.2U patent/CN205911012U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936797A (en) * | 2017-12-15 | 2019-06-25 | 深圳市三诺数字科技有限公司 | Audio frequency apparatus based on human ear simulation architecture |
| CN108540916A (en) * | 2018-05-30 | 2018-09-14 | 出门问问信息科技有限公司 | Bluetooth headset detection method, device and headform based on headform |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20200607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |