CN110099343A - A kind of earpiece and communication device with MEMS loudspeaker array - Google Patents
A kind of earpiece and communication device with MEMS loudspeaker array Download PDFInfo
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- CN110099343A CN110099343A CN201910450864.6A CN201910450864A CN110099343A CN 110099343 A CN110099343 A CN 110099343A CN 201910450864 A CN201910450864 A CN 201910450864A CN 110099343 A CN110099343 A CN 110099343A
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- 238000004891 communication Methods 0.000 title claims abstract description 10
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000001934 delay Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/003—Mems transducers or their use
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
This application discloses a kind of earpiece and communication device with MEMS loudspeaker array, wherein, MEMS loudspeaker array in the earpiece includes the MEMS loudspeaker of multiple array arrangements, to realize the purpose for increasing the sound radiation pressure of loudspeaker array MEMS loudspeaker array.In addition, position sensor cooperates MEMS loudspeaker array, so that the pulse of each array element transmitting has the different delays time in MEMS loudspeaker array, change phase relation when sound wave is reached by acoustic target TA, realize the variation of focus and sound beam direction, to realize the deflection and focusing of sound wave, so that the acoustic beam of MEMS loudspeaker array transmitting emits to by acoustic target, the focusing of acoustic beam not only increases sound pressure sensitivity, acoustic beam directive property is increased simultaneously, the poor problem of privacy caused by avoiding due to directive property difference.
Description
Technical field
This application involves acoustic equipment technical fields, more specifically to a kind of listening with MEMS loudspeaker array
Cylinder and communication device.
Background technique
Sound is generated by object vibration, and the object just in sounding is called sound source by we.The pressure that object vibration generates
Reeb vibrates the phonophore of inner ear by air movement, these vibrations are converted into small electronics E.E.G by phonophore, from
And people is enabled to perceive sound.
Loudspeaker, also known as loudspeaker, are a kind of common electro-acoustic transducer devices, and effect is to convert electrical signals to sound letter
Number, and outwardly transmitted acoustical signal by way of vibration, to realize the transmitting of sound.
MEMS (MEMS, Micro-Electro-MechanicalSystem) loudspeaker has low in energy consumption, size
The advantages that small, small in size and consistency is good is the developing direction in loudspeaker field.But due to the sound radiation pressure of MEMS loudspeaker
Sound radiation pressure compared to traditional loudspeaker reduces, and the acoustic pressure in transmission sensitivity of existing MEMS loudspeaker can't be complete
Meets the needs of practical.Still further aspect, existing conventional loudspeakers are due to the problem that sound is big, directive property is poor, so that passing
The privacy of loudspeaker in use of uniting is poor.
Summary of the invention
In order to solve the above technical problems, this application provides a kind of earpiece with MEMS loudspeaker array and communication dresses
It sets, to realize the practicability for promoting MEMS loudspeaker, and promotes the directive property with the earpiece of MEMS loudspeaker array, thus
Promote the purpose of the privacy of the earpiece with MEMS loudspeaker array.
To realize the above-mentioned technical purpose, the embodiment of the present application provides following technical solution:
A kind of earpiece with MEMS loudspeaker array, comprising:
Position sensor, for obtaining the location information by acoustic target；
MEMS loudspeaker array, the phonation unit including multiple array arrangements, the phonation unit are MEMS loudspeaker, and
And the MEMS loudspeaker array has the array angle information of each MEMS loudspeaker；
The array element control module being electrically connected with the position sensor, for the array according to the MEMS loudspeaker array
Angle information and the location information by acoustic target control the transmitting electricity of each phonation unit in the MEMS loudspeaker array
Road delay, so that the acoustic beam of MEMS loudspeaker array transmitting is emitted to described by acoustic target.
Optionally, the array element control module includes: to receive circuit and Phased-array circuit；Wherein,
The reception circuit, for receiving the location information and the array angle information and to the Phased-array circuit
Transmit acoustic beam deflection information；
The Phased-array circuit controls the MEMS loudspeaker array for the acoustic beam deflection information based on the received
In each phonation unit transmit circuit delay.
Optionally, the MEMS loudspeaker array includes multiple phonation units in one-dimensional array arrangement.
Optionally, the one-dimensional array includes stripe array.
Optionally, the MEMS loudspeaker array includes multiple phonation units in two-dimensional array arrangement.
Optionally, the two-dimensional array includes rectangular array, circular array or annular array.
Optionally, the position sensor includes laser range sensor, contact position sensor, proximity position biography
Sensor or Hall sensor.
Optionally, the MEMS loudspeaker is electromagnetic type MEMS loudspeaker or piezoelectric type MEMS loudspeaker.
Optionally, further includes: the package casing with multiple acoustic aperture out；
The package casing is for the array element control module and MEMS loudspeaker array to be packaged together, the MEMS
Loudspeaker array is spoken facing towards the acoustic aperture setting out.
A kind of communication device, comprising: at least one earpiece as described in any one of the above embodiments with MEMS loudspeaker array.
It can be seen from the above technical proposal that the embodiment of the present application provides a kind of earpiece with MEMS loudspeaker array
And communication device, wherein the earpiece with MEMS loudspeaker array is raised by position sensor, array element control module and MEMS
Sound device array is constituted, wherein the MEMS loudspeaker array includes the MEMS loudspeaker of multiple array arrangements, to realize increasing
The sound radiation pressure for adding MEMS loudspeaker array meets the purpose of the practicability demand of loudspeaker.In addition, the position sensor is used
In obtaining the location information by acoustic target, the array element control module is used to obtain the array angle information of phonation unit, and root
According to the array angle information and the location information, the transmitting electricity of each phonation unit in the MEMS loudspeaker array is controlled
Road delay so that the pulse of each array element transmitting has the different delays time in MEMS loudspeaker array, change sound wave reach by
Phase relation when acoustic target realizes the variation of focus and sound beam direction, so that the deflection and focusing of sound wave are realized, so that described
The acoustic beam of MEMS loudspeaker array transmitting is emitted to described by acoustic target, and the focusing of acoustic beam not only increases sound pressure sensitivity, together
When increase acoustic beam directive property, avoid traditional loudspeaker due to the poor problem of privacy caused by directive property difference.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural representation for earpiece with MEMS loudspeaker array that one embodiment of the application provides
Figure；
Fig. 2 is a kind of arrangement schematic diagram for MEMS loudspeaker array that one embodiment of the application provides；
Fig. 3 is that a kind of application scenarios for earpiece with MEMS loudspeaker array that one embodiment of the application provides show
It is intended to；
Fig. 4 is that a kind of position sensor that one embodiment of the application provides is illustrated with the positional relationship by acoustic target
Figure；
Fig. 5 is a kind of structural representation for earpiece with MEMS loudspeaker array that another embodiment of the application provides
Figure；
Fig. 6 is a kind of operation principle schematic diagram for reception circuit that one embodiment of the application provides；
Fig. 7 is a kind of probe parameter schematic diagram for Phased-array circuit that one embodiment of the application provides；
Fig. 8-Figure 11 is the arrangement schematic diagram of phonation unit in MEMS loudspeaker array provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
" embodiment " mentioned by this specification or similar term indicate characteristic related with embodiment, structure or feature,
Including in at least embodiment of the application.Therefore, this specification occurs term " in one embodiment " " is being implemented
In example " and similar to term possibility but it is not necessarily all direction identical embodiment.
Furthermore herein described characteristic, structure or feature can combine in any way in one or more embodiments.
Illustrate to provide many specific details below to provide the understanding to the embodiment of the present application.However the ordinary skill of related fields
Personnel will be seen that the application, even if not utilizing wherein one or more specific details, or utilize other methods, component, material
Deng also implementable.It on the other hand, is the application that avoids confusion, well known structure, material or operation do not have a detailed description.
The embodiment of the present application provides a kind of earpiece with MEMS loudspeaker array, and as depicted in figs. 1 and 2, Fig. 1 is tool
There is the structural schematic diagram of the earpiece of MEMS loudspeaker array, Fig. 2 is a kind of MEMS loudspeaker array provided by the embodiments of the present application
The arrangement schematic diagram of phonation unit in 30, the earpiece with MEMS loudspeaker array include:
Position sensor 20, for obtaining the location information by acoustic target；
With reference to Fig. 2, MEMS loudspeaker array 30 includes the phonation unit 31 of multiple array arrangements, and the phonation unit 31 is
MEMS loudspeaker；
The array element control module 10 being electrically connected with the position sensor 20, for according to the MEMS loudspeaker array
Array angle information and the location information by acoustic target control each phonation unit 31 in the MEMS loudspeaker array 30
Transmit circuit delay so that the MEMS loudspeaker array 30 transmitting acoustic beam to it is described by acoustic target TA emit.
In the present embodiment, the earpiece with MEMS loudspeaker array is by position sensor 20, array element control module
10 and MEMS loudspeaker array 30 is constituted, wherein the MEMS loudspeaker array 30 includes the MEMS loudspeaking of multiple array arrangements
Device meets the purpose of the practicability demand of loudspeaker to realize the sound radiation pressure for increasing MEMS loudspeaker array 30.Separately
Outside, the position sensor 20 is used to obtain the location information by acoustic target TA, and the array element control module 10 is for obtaining hair
Sound cellular array angle information, and according to the array angle information and the location information, control the MEMS loudspeaker
The transmit circuit delay of each phonation unit in array 30, so that the pulse of each array element transmitting has in MEMS loudspeaker array
The different delays time changes phase relation when sound wave is reached by acoustic target TA, realizes the variation of focus and sound beam direction, thus
Realize the deflection and focusing of sound wave, so that the acoustic beam of the MEMS loudspeaker array 30 transmitting is emitted to described by acoustic target TA,
The focusing of acoustic beam not only increases sound pressure sensitivity, while increasing acoustic beam directive property, avoids traditional loudspeaker due to referring to
The poor problem of privacy caused by tropism difference.
In addition, Fig. 3 is a kind of applied field of typically earpiece with MEMS loudspeaker array 30 with reference to Fig. 3 and Fig. 4
Scape, Fig. 4 give position sensor 20 and the positional diagram by acoustic target TA, the test surface of the position sensor 20
21 towards predeterminated position, and the predeterminated position has the earpiece of MEMS loudspeaker array 30 in use for described in, by sound
The position target TA.
For example, referring still to Fig. 3, it is assumed that the earpiece with MEMS loudspeaker array 30 is applied to mobile communication
In equipment MB (such as mobile phone), in mobile communication equipment MB use process, the earpiece with MEMS loudspeaker array 30
It is located proximate to the ear position of user, in this usage scenario, the ear of user is described with MEMS loudspeaker
The earpiece of array 30 by acoustic target TA.Likewise, described can will have MEMS loudspeaker array in this usage scenario
The test surface of the position sensor 20 of 30 earpiece towards user ear so that the position sensor 20 can be accurate
The location information detected where the ear of user, and to the array element control module 10 transmit.
Optionally, the position sensor 20 can be laser range sensor, contact position sensor 20, proximity
One of position sensor 20 or Hall sensor.
When the position sensor 20 is Hall sensor, letter that the Hall sensor is triggered during the work time
Number be hall signal, it is also necessary to scale parameter is determined according to the parameter of Hall sensor, according to scale parameter and hall signal
Product, determine by acoustic target TA and position sensor 20 relative positional relationship.Due to Hall sensor detecting location information
Concrete operating principle be well known to those skilled in the art, this will not be repeated here by the application.
In addition, it is necessary to explanation, the array angle information of the phonation unit is in addition to the sounding including MEMS loudspeaker
Face towards except angle, further include position of the MEMS loudspeaker in MEMS loudspeaker array 30.The MEMS loudspeaking
Position of the device in MEMS loudspeaker array 30 can be obtained by technologies such as gyroscopes, and the application does not limit this
It is fixed.
On the basis of the above embodiments, in one embodiment of the application, as shown in figure 5, the array element controls mould
Block 10 includes: to receive circuit 12 and Phased-array circuit 11；Wherein,
The reception circuit 12, for receiving the location information and the array angle information and to phased array electricity
Transmit acoustic beam deflection information in road 11；
The Phased-array circuit 11 controls the MEMS loudspeaker battle array for the acoustic beam deflection information based on the received
The transmit circuit delay of each phonation unit 31 in column 30.
With reference to Fig. 6, Fig. 6 is the operation principle schematic diagram for receiving circuit 12, and the reception circuit 12 is by received position
Confidence breath and array angle information carry out information conversion, the two information are converted to the acoustic beam deflection letter of electrical signal form
Breath, and the acoustic beam deflection information of electrical signal form is emitted to Phased-array circuit 11, so that the Phased-array circuit 11 is according to institute
State the transmit circuit delay that electric signal controls each phonation unit in the MEMS loudspeaker array 30.
The probe schematic diagram of the Phased-array circuit 11 is shown with reference to Fig. 7, Fig. 7, wherein main probe parameter includes:
In frequency f, number of wafers n, cell array direction aperture A, chip machine direction width H, single wafer width E and two chips
The distance between heart P etc..The concrete operating principle of the Phased-array circuit 11 has been well known to those skilled in the art, the application
This will not be repeated here.
On the basis of the above embodiments, in some embodiments of the present application, the MEMS loudspeaker array is given
30 specific arrangement mode.
Optionally, the MEMS loudspeaker array 30 includes multiple phonation units 31 in one-dimensional array arrangement.
With reference to Fig. 8 and Fig. 9, the one-dimensional array is stripe array or annular array.In fig. 8, the one-dimensional array packet
Include stripe array.In Fig. 9, the one-dimensional array includes annular array.
Optionally, the MEMS loudspeaker array 30 includes multiple phonation units 31 in two-dimensional array arrangement.
With reference to Figure 10 and Figure 11, the two-dimensional array is rectangular array or circular array.In Figure 10, the two-dimensional array
Including rectangular array.In Figure 11, the two-dimensional array includes circular array.
On the basis of the above embodiments, in another embodiment of the application, the MEMS loudspeaker is electromagnetic type
MEMS loudspeaker or piezoelectric type MEMS loudspeaker.
On the basis of the above embodiments, described that there is MEMS loudspeaker array in the further embodiment of the application
30 earpiece further include: the package casing with multiple acoustic aperture out；
The package casing is described for the array element control module 10 and MEMS loudspeaker array 30 to be packaged together
MEMS loudspeaker array 30 is spoken facing towards the acoustic aperture setting out.
Correspondingly, the embodiment of the present application also provides a kind of communication devices, comprising: the tool as described in above-mentioned any embodiment
There is the earpiece of MEMS loudspeaker array.
In conclusion the embodiment of the present application provides a kind of earpiece and communication device with MEMS loudspeaker array,
In, the earpiece with MEMS loudspeaker array is made of position sensor, array element control module and MEMS loudspeaker array,
Wherein, the MEMS loudspeaker array includes the MEMS loudspeaker of multiple array arrangements, increases MEMS loudspeaker to realize
The sound radiation pressure of array meets the purpose of the practicability demand of loudspeaker.In addition, the position sensor is for obtaining by sound mesh
Target location information, the array element control module are used to obtain the array angle information of phonation unit, and according to the array angle
Information and the location information are spent, the transmit circuit delay of each phonation unit in the MEMS loudspeaker array is controlled, so that
The pulse of each array element transmitting has the different delays time in MEMS loudspeaker array, changes when sound wave is reached by acoustic target TA
Phase relation realizes the variation of focus and sound beam direction, so that the deflection and focusing of sound wave are realized, so that the MEMS loudspeaker
The acoustic beam of array emitter is emitted to described by acoustic target, and the focusing of acoustic beam not only increases sound pressure sensitivity, while increasing sound
Beam directive property avoids traditional loudspeaker due to the poor problem of privacy caused by directive property difference.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of earpiece with MEMS loudspeaker array characterized by comprising
Position sensor, for obtaining the location information by acoustic target；
MEMS loudspeaker array, the phonation unit including multiple array arrangements, the phonation unit are MEMS loudspeaker, and institute
State the array angle information that MEMS loudspeaker array has each MEMS loudspeaker；
The array element control module being electrically connected with the position sensor, for the array angle according to the MEMS loudspeaker array
Information and the location information by acoustic target, the transmit circuit for controlling each phonation unit in the MEMS loudspeaker array prolong
When, so that the acoustic beam of MEMS loudspeaker array transmitting is emitted to described by acoustic target.
2. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that the array element control module
It include: to receive circuit and Phased-array circuit；Wherein,
The reception circuit, for receiving the location information and the array angle information and being transmitted to the Phased-array circuit
Acoustic beam deflection information；
The Phased-array circuit controls every in the MEMS loudspeaker array for the acoustic beam deflection information based on the received
The transmit circuit of a phonation unit is delayed.
3. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that the MEMS loudspeaker battle array
Column include multiple phonation units in one-dimensional array arrangement.
4. the earpiece according to claim 3 with MEMS loudspeaker array, which is characterized in that the one-dimensional array includes
Stripe array.
5. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that the MEMS loudspeaker battle array
Column include multiple phonation units in two-dimensional array arrangement.
6. the earpiece according to claim 5 with MEMS loudspeaker array, which is characterized in that the two-dimensional array includes
Rectangular array, circular array or annular array.
7. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that the position sensor packet
Include laser range sensor, contact position sensor, proximity position sensor or Hall sensor.
8. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that the MEMS loudspeaker is
Electromagnetic type MEMS loudspeaker or piezoelectric type MEMS loudspeaker.
9. the earpiece according to claim 1 with MEMS loudspeaker array, which is characterized in that further include: have multiple
The package casing of acoustic aperture out；
The package casing is for the array element control module and MEMS loudspeaker array to be packaged together, the MEMS loudspeaking
Device array is spoken facing towards the acoustic aperture setting out.
10. a kind of communication device characterized by comprising at least one has MEMS as claim 1-9 is described in any item
The earpiece of loudspeaker array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450864.6A CN110099343A (en) | 2019-05-28 | 2019-05-28 | A kind of earpiece and communication device with MEMS loudspeaker array |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450864.6A CN110099343A (en) | 2019-05-28 | 2019-05-28 | A kind of earpiece and communication device with MEMS loudspeaker array |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910450864.6A Pending CN110099343A (en) | 2019-05-28 | 2019-05-28 | A kind of earpiece and communication device with MEMS loudspeaker array |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112261563A (en) * | 2020-10-22 | 2021-01-22 | 常州元晶电子科技有限公司 | Mems digital loudspeaker system and working method thereof |
| WO2021227980A1 (en) * | 2020-05-14 | 2021-11-18 | 京东方科技集团股份有限公司 | Sound production device and driving method therefor, and display panel and display device |
| WO2024067570A1 (en) * | 2022-09-30 | 2024-04-04 | 维沃移动通信有限公司 | Wearable device, and control method and control apparatus for wearable device |
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