CN103686499B

CN103686499B - Bionic pickup

Info

Publication number: CN103686499B
Application number: CN201310629868.3A
Authority: CN
Inventors: 殷业; 李丽
Original assignee: Shanghai Normal University
Current assignee: Shanghai Normal University
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2017-02-01
Anticipated expiration: 2033-11-29
Also published as: CN103686499A

Abstract

The invention relates to a sound recorder, in particular to a bionic pickup. An outer diaphragm (2) is disposed in a pickup head (1) and adhered to an inner diaphragm (5) through an artificial ossicle (3). The inner diaphragm (5) is hermetically disposed at one end of a simulation cochlea (8) which is a cylinder filled with liquid. A triangular elastic base film (6) is axially arranged inside the cylinder. One bottom edge of the base film (6) overlaps the bottom of the cylinder. A sharp corner of the base film (6) is adhered to the inner center of the inner diaphragm (5). From the sharp corner of the triangular base film (6) to the bottom of the cylinder, on one side wall of the simulation cochlea (8), a plurality of miniature microphones (7) are arranged at certain intervals. The miniature microphones (7) are lead out of the pickup through their respective leads (9). The artificial ossicle (3) is composed of three thin rods hinged in a Z shape through flexible hinges (4). The bionic pickup imitating the structural design of human ear can collect multiple voices under different frequencies, is better satisfactory to auditory reality in human, and is convenient for subsequent intelligent handling of data.

Description

A kind of bionic pickup

Technical field

A kind of sound of system of the present invention is recorded utensil, is specifically related to imitate a kind of pick up structure of people's ear structure.

Background technology

Although speech recognition and other sound Intelligent treatment technically have been achieved for very big progress, but still do not have Exceed the ability that human ear can reach.So the acoustical principles of research human ear, with bionics techniques, manufacture bionic pickup, can From information source end, to obtain the information being consistent with human auditory system, it is more beneficial for carrying out at bionical speech recognition and other sound intelligence Reason.The cochlea of human ear plays a natural sound filter effect, imitates cochlea design pick up, can make the number collecting According to the practical situation more meeting human auditory system, use such initial data, can process for follow-up data and identify etc. that work brings More facilitate.

Content of the invention

It is an object of the invention to provide a kind of imitate and the pick up structure close to human auditory system ability, so that for subsequently counting Create conditions according to the work such as process and identification and bring convenience.

The purpose of the present invention is solved by technical scheme below:

A kind of bionic pickup, the pick-up head including cylindrical shell and one end open it is characterised in that:

Configure outer vibrating diaphragm in pick-up head, sonic vibration is passed to interior vibrating diaphragm through ear bones by outer vibrating diaphragm, and interior vibrating diaphragm is closed in imitative One end of real ear snail,

Emulation cochlea is internal hydraulically full cylindrical drum, and arranging one along axis in the cylindrical drum of emulation cochlea is in three Angular elastic substrates film, basement membrane one base is overlapped with cylindrical drum bottom, a wedge angle and interior vibrating diaphragm medial center adhesion；

From the wedge angle of triangular basis counterdie to cylinder bottom, on the side wall of bionical cochlea, it is respectively separated certain distance Place some mini microphones, each mini microphone is drawn outside pick up by respective conductor combination respectively；

Described ear bones be three thin bars by flexible hinge hinged in z shape, one end is adhered to the inner side of outer vibrating diaphragm, one end is glued It is connected in the outside of interior vibrating diaphragm, make inner and outer system acoustic impedance match.

Although speech recognition technically has been achieved for very big progress, but still it is not above what human ear can reach Ability.So the acoustical principles of research human ear, and carry out bionical there is definite meaning.The cochlea of human ear play one natural Sound filter effect, using technical solution of the present invention, imitate cochlea design pick up, the data collecting can be made more to accord with Close the practical situation of human auditory system, use such original data source, can process for follow-up data and bring with work such as speech recognitions More facilitate.

Further, from the wedge angle of described triangular basis counterdie to cylinder bottom, it is respectively provided with some miniature Mikes by logarithmic relationship Wind.

Further, six mini microphones are set from the wedge angle of described triangular basis counterdie to cylinder bottom, and six distances are divided It is not: 0.69cm, 1.09cm, 1.38cm, 1.61cm, 1.79cm, 2.08cm.

Further, described emulation cochlea is diameter 1cm, the cylindrical drum of tube length 10cm.

Further, described ear bones is three little plastic pin, is formed as flexible hinge adhesion by elastic silica gel.

Imitate the pick up of human ear structure design, in speech signal collection, the sound of collection six road different frequencies, with biography The microphone of system is compared, and so obtain is the sound of 6 sound channel different frequency bands simultaneously, and this is for follow-up data processing and identification work Bring and much facilitate, the audition more meeting people is actual.

The superior effect of the present invention is: imitates the pick up of human ear structure design, in speech signal collection, gathers multichannel The sound of different frequency, compared with traditional microphone, so obtain is the sound of multichannel different frequency bands simultaneously, and this is for rear Continuous data processing and identification work bring and much facilitate, and the audition more meeting people is actual.

Brief description

Fig. 1 is a kind of a kind of embodiment structure top view of bionic pickup of the present invention.

Fig. 2 is a kind of a kind of embodiment structural front view of bionic pickup of the present invention.

In figure 1 is pick-up head, 2 be outer vibrating diaphragm, 3 be ear bones, 4 be flexible hinge, 5 be interior vibrating diaphragm, 6 be basement membrane, 7 be Mini microphone, 8 be emulation cochlea, 9 be wire.

Specific embodiment

Further describe the structure of the present invention below in conjunction with accompanying drawing.

As shown in figure 1, having opened many apertures on pick-up head 1, so that sound enters, when gathering voice signal, sound wave Outer vibrating diaphragm 2 is made to vibrate through metal pick-up head 1, the motion of outer vibrating diaphragm drives ear bones 3 to move, and ear bones 3 connects interior vibrating diaphragm 5, causes The vibration of interior vibrating diaphragm 5, interior vibrating diaphragm 5 causes the vibration of liquid and basement membrane 6 in emulation cochlea 8 again, thus causing traveling wave along substrate Film 6 is propagated, and basement membrane 6 is the design of apery ear basement membrane, head fine stern width, the different frequency of the sound diverse location on basement membrane There is formant, above basement membrane, respectively in interval logarithmic scale 0.69cm, 1.09cm, 1.38cm, 1.61cm, 1.79cm, Mini microphone 7 is installed at 2.08cm, 6 altogether, the sound of different frequency produces different traveling wave peak values and occurs in basement membrane 6 Diverse location, when frequency is relatively low, the amplitude peak of basement membrane 6 vibration occurs in the near-bottom of basement membrane 6, and frequency is higher When, the amplitude peak of basement membrane 6 vibration occurs in the near top of basement membrane 6 (near vibrating diaphragm), by 6 mini microphones 7 Collect the sound of six road different frequencies.

The size of ear bones is obtained by testing measurement, to ensure the acoustic impedance match between extraneous air and interior liquid.

Claims

1. a kind of bionic pickup, the pick-up head (1) including cylindrical shell and one end open it is characterised in that:

Configure outer vibrating diaphragm (2) in pick-up head (1), sonic vibration is passed to interior vibrating diaphragm (5) through ear bones (3), inside shakes by outer vibrating diaphragm (2) Film (5) is closed in one end of emulation cochlea (8),

Emulation cochlea (8) is internal hydraulically full cylindrical drum, arranges one along axis and be in the cylindrical drum of emulation cochlea (8) The elastic substrates film (6) of triangle, basement membrane (6) base is overlapped with cylindrical drum bottom, a wedge angle and interior vibrating diaphragm (5) medial center Adhesion；

From the wedge angle of triangular basis counterdie (6) to cylinder bottom, on the side wall of bionical cochlea (8), it is respectively separated a spacing From placing some mini microphones (7), each mini microphone (7) is combined by respective wire (9) respectively and draws outside pick up；

The wedge angle of described triangular basis counterdie (6), to cylinder bottom, is respectively provided with some mini microphones (7) by logarithmic relationship；

Described ear bones (3) be three thin bars by flexible hinge (4) hinged in z shape, one end is adhered to the inner side of outer vibrating diaphragm (2), One end is adhered to the outside of interior vibrating diaphragm (5).

2. according to claim 1 bionic pickup it is characterised in that from the wedge angle of described triangular basis counterdie (6) to cylinder bottom Six mini microphones (7) of setting, six distances are respectively as follows: 0.69cm, 1.09cm, 1.38cm, 1.61cm, 1.79cm, 2.08cm.

3. according to claim 1 bionic pickup it is characterised in that described emulation cochlea (8) be diameter 1cm, tube length 10cm Cylindrical drum.

4. according to claim 1 bionic pickup it is characterised in that described ear bones (3) be three little plastic pin, by elasticity Silica gel forms as flexible hinge (4) adhesion.