CN102456341A - Microphone device and voice processing method - Google Patents
Microphone device and voice processing method Download PDFInfo
- Publication number
- CN102456341A CN102456341A CN2010105277760A CN201010527776A CN102456341A CN 102456341 A CN102456341 A CN 102456341A CN 2010105277760 A CN2010105277760 A CN 2010105277760A CN 201010527776 A CN201010527776 A CN 201010527776A CN 102456341 A CN102456341 A CN 102456341A
- Authority
- CN
- China
- Prior art keywords
- microphone
- sound
- signal
- reception signal
- acoustic beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention relates to a microphone device and a voice processing method. The microphone device comprises a machine body, a main microphone and a reference microphone arranged on the machine body and used for receiving a voice from a sound source and a noise received from the outside of the sound source. The main microphone and the reference microphone are arranged vertical to each other and are facing the sound source.
Description
Technical field
The present invention relates to microphone apparatus, relate in particular to sound processing method.
Background technology
Microphone is a kind of sensor (or being called sensor), in order to convert tones into electronic signal.Microphone has various application, for example, can be applicable to occasions such as phone, video recorder, osophone, cartoon making, live recording engineering, radio or television broadcasting and VoIP.
Microphone array has any amount of microphone.One of application of microphone array promptly is the microphone array system, and it can be specially adapted to phone, voice identification system in order to from environmental noise, to capture the sound input, and among the osophone.In this mode, microphone array technology capable of using is to eliminate non-static noise.
Yet in order to improve the voice recognition performance of communication quality and microphone, except the position of microphone was very important, the sound processing method of employing also can not be ignored.
Summary of the invention
The present invention provides a kind of microphone apparatus, comprising: a body; And a main microphone and a reference microphone, be disposed on this body, in order to receiving a sound, and outside this source of sound, receive a noise from a source of sound, wherein this main microphone and this reference microphone are homeotropic alignment, and towards this source of sound.
The present invention also provides a kind of sound processing method, comprising: with a main microphone and a reference microphone homeotropic alignment and towards a source of sound, wherein this main microphone and this reference microphone receive a sound in order to this source of sound certainly, and outside this source of sound, receive a noise.
Description of drawings
Fig. 1 is according to the microphone arrangement figure in one embodiment of the invention microphone apparatus 100.
Fig. 2 is the pole diagram of microphone 120 and 130.
Fig. 3 is microphone apparatus 100 synoptic diagram according to one embodiment of the invention.
Fig. 4 is acoustic beam formation device 320 synoptic diagram according to one embodiment of the invention.
Fig. 5 is according to sound processing method process flow diagram of the present invention.
Fig. 6 is the included detailed step of step S508 of the present invention.
[main element symbol description]
100～microphone apparatus;
110～fuselage;
120～main microphone;
130～reference microphone;
P1～first plane;
P2～second plane;
160～keyboard;
140～speaker;
150～straight line;
301～the one ADC;
302～the 2nd ADC;
310～sensitivity of microphone correcting unit;
320～acoustic beam forms device;
R1～first receives signal;
R2～second receives signal;
C0～correction signal;
B0～acoustic beam forms signal;
410～the first sound variation detecting devices;
420～the second sound variation detecting devices;
412～reference channel forms the unit;
422～adaptability noise eliminating unit;
V1～first sound detection signals;
V2～second sound detection signals;
R1～first receives signal;
R2～second receives signal;
S0～reference channel signal;
B0～acoustic beam forms signal.
Embodiment
Hereinafter is for introducing the preferred embodiments of the present invention.Each embodiment is in order to explaining principle of the present invention, but non-in order to restriction the present invention.Scope of the present invention is when being as the criterion with appending claims.
Fig. 1 is according to the microphone arrangement figure in one embodiment of the invention microphone apparatus 100.Microphone apparatus 100 of the present invention comprises a body 110, one a main microphone 120 and a reference microphone 130 at least.
According to the present invention, main microphone 120 is to be disposed on the fuselage 110 with reference microphone 130, and is homeotropic alignment (being arranged on the straight line 150).For example, the fuselage 110 of microphone apparatus 100 comprises one first plane P 1 and one second plane P 2 at least, and wherein first plane P 1 and 2 of second plane P have an angle, and for example, angle is 90 degree.In one embodiment, main microphone 120 can be disposed at respectively on first plane P 1 and second plane P 2 with reference microphone 130.In more detail, microphone apparatus 100 can be mobile phone, and keyboard 160 is disposed on first plane P 1 of fuselage 110 usually, like Fig. 1 institute.Therefore, main microphone 120 is configurable among keyboard 160 (i.e. first plane P 1), the then configurable bottom in mobile phone 100 of reference microphone 130 (second plane P 2).Be familiar with this skill personage and can recognize that the present invention needn't be as limit.
The main microphone 120 that is disposed on the fuselage 110 can receive sound in order to go up from source of sound (for example the speaker 140) with reference microphone 130, and (for example context schemes not show) receives noise outside source of sound.In this embodiment, main microphone 120 than reference microphone 130 more near speaker 140.Therefore, the sound that main microphone 120 is collected from speaker 140 is more than the noise of from environment, collecting, and the noise that reference microphone 130 is collected from environment is then more than the sound of collecting from speaker 140.Among the present invention, main microphone 120 is homeotropic alignment with reference microphone 130 and towards speaker 140.Therefore can promote the usefulness that receives sound from speaker 140.In this embodiment; Being familiar with this skill personage can recognize; Main microphone 120 and reference microphone 130 are homeotropic alignment and towards speaker 140 mouth region, and the conical acoustic beam 170 (as shown in Figure 1) that microphone 120 and 130 is throwed is contained speaker 140 mouth region.
Fig. 2 is the pole diagram (polar pattern) of microphone 120 and 130.In the present invention, main microphone 120 is all omni-directional microphone with reference microphone 130.As shown in Figure 2, it is heart-shaped that microphone 120 and 130 acoustic beam are, and with zero position (null) 210 towards source of sound 140.Those skilled in the art can recognize that microphone 120 and 130 is being kept low sensitivity on source of sound 140 directions, and keeps high sensitivity in other directions.
Fig. 3 is microphone apparatus 100 synoptic diagram according to one embodiment of the invention.Microphone apparatus 100 comprises that also one first analog-to-digital converter (analog-digital converter, ADC) 301), one the 2nd ADC302, a sensitivity of microphone correcting unit 310 and an acoustic beam form device 320.Main microphone 120 receives this sound and this noise, and provides one first to receive signal R1 according to this sound and this noise, and reference microphone 130 receives this sound and this noise, and provides one second to receive signal R2 according to this sound and this noise.This first and second ADC301 and 302 is digital signal with this first reception signal R1 and this second reception signal R2 from analog signal conversion respectively.Sensitivity of microphone correcting unit 310 carries out sensitivity correction in order to the first reception signal R1 and second that is received is received signal R2, and provides a correction signal C0 to form device 320 to this acoustic beam.Have much owing to proofread and correct the sensitivity of method of main microphone 120 and reference microphone 130, and these methods have been known in the art, so this paper will repeat no more for simplified illustration.Acoustic beam forms device 320 in order to receive signal R1 and correction signal C0 output acoustic beam formation signal B0 according to first.Hereinafter will specify this acoustic beam and form device 320.
Fig. 4 is acoustic beam formation device 320 synoptic diagram according to one embodiment of the invention.Acoustic beam forms device 320 and comprises that also one first sound variation detecting device 410, one second sound variation detecting device 420, a reference channel form a unit 412 and an adaptability noise eliminating unit 422.
The first sound variation detecting device 410 is in order to provide the first sound detection signals V1 to this acoustic beam formation device 320 according to this first reception signal R1 and this correction signal C0.This first sound detection signals V1 forms unit 412 in order to control this reference channel, and is as shown in Figure 4.This reference channel forms unit 412 in order to provide a reference channel signal S0 to this reference channel formation unit 412 according to this first reception signal R1, this correction signal C0 and this first sound detection signals V1.This reference channel signal S0 has more noise information but not acoustic information.This second sound variation detecting device 420 is in order to provide one second sound detection signals V2 to this adaptability noise eliminating unit 422 according to this first reception signal R1 and this reference channel signal S0.As shown in Figure 4, the second sound detection signals V2 is in order to control this adaptability noise eliminating unit 422.This adaptability noise eliminating unit 422 is in order to provide this acoustic beam to form signal B0 to this adaptability noise eliminating unit 422 according to this first reception signal R1, reference channel signal S0 and this second sound detection signals V2.This adaptability noise eliminating unit 422 first receives this reference channel signal S0 the signal R1 and removes from this this, and exports this acoustic beam and form signal B0.This acoustic beam forms device 320 and produces these acoustic beams and form signal B0, and this this acoustic beam forms signal B0 and can represent from the collected original sound of this source of sound 140.
The present invention also provides a sound processing method.Fig. 5 is according to sound processing method process flow diagram of the present invention.With reference to Fig. 5 and Fig. 1, in step S502, main microphone 120 is homeotropic alignment with reference microphone 130; And towards source of sound; For example the speaker 140, and wherein this main microphone 120 and this reference microphone 130 be in order to receiving sound on this speaker 140 certainly, and outside this speaker 140, receive noise.In step S504, main microphone 120 receives signal R1 in order to produce first according to this sound and this noise; Receive signal R2 with this reference microphone 130 in order to produce second according to this sound and noise.In step S506, this first reception signal R1 and this second reception signal R2 that is received carried out sensitivity correction to produce a correction signal C0 to this acoustic beam formation device 320.In step S508, according to this first reception signal R1 and this correction signal C0 one acoustic beam is formed signal B0 and export this acoustic beam formation device 320 to.
Fig. 6 is the included detailed step of step S508 of the present invention.In step S602, produce one first sound detection signals V1 according to this first reception signal R1 and this correction signal C0.In step S604, produce reference channel signal S0 according to this first reception signal R1, this correction signal C0 and this first sound detection signals V1.In step S606, first receive signal R1 and this reference channel signal S0 produces one second sound detection signals V2 according to this, wherein this reference channel signal S0 have more about this noise information but not about the data of this sound.At step S608, produce an acoustic beam according to this first reception signal R1, this reference channel signal S0 and this second sound detection signals V2 and form signal B0.As stated; Reference channel signal S0 (having the information about this noise) will remove from this first reception signal R1 (having the information about this sound and this noise); Form signal B0 to produce acoustic beam, and this this acoustic beam forms signal B0 and can represent collected sound from the source of sound 140.
Though the present invention with preferred embodiment openly as above; So it is not in order to limit scope of the present invention; Those skilled in the art are not breaking away from the spirit and scope of the present invention, and when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the appended claims person of defining.
Claims (20)
1. microphone apparatus comprises:
One body; And
An one main microphone and a reference microphone are disposed on this body, in order to receiving a sound from a source of sound, and outside this source of sound, receive a noise,
Wherein this main microphone and this reference microphone are homeotropic alignment, and towards this source of sound.
2. microphone apparatus as claimed in claim 1, wherein this main microphone than this reference microphone more near this source of sound.
3. microphone apparatus as claimed in claim 1, this main microphone arrangement relative position intermediate on this body wherein, and this reference microphone is disposed on this body the position of bottom relatively.
4. microphone apparatus as claimed in claim 1, wherein this main microphone is exported one first according to this sound and this noise and is received signal, and this reference microphone is exported one second reception signal according to this sound and this noise.
5. microphone apparatus as claimed in claim 4 comprises that also a sensitivity of microphone correcting unit is in order to carry out sensitivity correction and to export a correction signal this first reception signal and this second reception signal.
6. microphone apparatus as claimed in claim 5 comprises that also an acoustic beam forms device and forms signal in order to export an acoustic beam according to this first reception signal and this correction signal.
7. microphone apparatus as claimed in claim 6, wherein this acoustic beam formation device also comprises one first sound variation detecting device, in order to according to this first reception signal and this correction signal one first sound detection signals to be provided.
8. microphone apparatus as claimed in claim 7, wherein this acoustic beam formation device comprises that also a reference channel forms the unit, in order to according to this first reception signal, this correction signal and this first sound detection signals one reference channel signal to be provided.
9. microphone apparatus as claimed in claim 8, wherein this acoustic beam formation device also comprises one second sound variation detecting device, in order to according to this first reception signal and this reference channel signal one second sound detection signals to be provided.
10. microphone apparatus as claimed in claim 9, wherein this acoustic beam formation device also comprises an adaptability noise eliminating unit, in order to provide this acoustic beam to form signal according to this first reception signal, this reference channel signal and this second sound detection signals.
11. microphone apparatus as claimed in claim 1, wherein this main microphone and this reference microphone are all omni-directional microphone.
12. microphone apparatus as claimed in claim 1, wherein this body comprises staggered at least one first plane and one second plane at angle, and wherein this main microphone arrangement is on this first plane, and this reference microphone is disposed on this second plane.
13. a sound processing method comprises:
With a main microphone and a reference microphone homeotropic alignment and towards a source of sound, wherein this main microphone and this reference microphone receive a sound in order to this source of sound certainly, and outside this source of sound, receive a noise.
14. sound processing method as claimed in claim 13 also comprises:
Utilize this main microphone to receive signal to produce one first according to this sound and this noise; And
Utilize this reference microphone to receive signal to produce one second according to this sound and this noise.
15. sound processing method as claimed in claim 14 also comprises:
This first reception signal and this second reception signal are carried out sensitivity correction to produce a correction signal.
16. sound processing method as claimed in claim 15 also comprises:
Export an acoustic beam according to this first reception signal and this correction signal and form signal.
17. sound processing method as claimed in claim 16 also comprises:
According to this first reception signal and this correction signal one first sound detection signals is provided.
18. sound processing method as claimed in claim 17 also comprises:
According to this first reception signal, this correction signal and this first sound detection signals one reference channel signal is provided.
19. sound processing method as claimed in claim 18 also comprises:
According to this first reception signal and this reference channel signal one second sound detection signals is provided.
20. sound processing method as claimed in claim 19 also comprises:
Provide this acoustic beam to form signal according to this first reception signal, this reference channel signal and this second sound detection signals.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60713810A | 2010-10-28 | 2010-10-28 | |
| US12/607,138 | 2010-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102456341A true CN102456341A (en) | 2012-05-16 |
Family
ID=46039468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105277760A Pending CN102456341A (en) | 2010-10-28 | 2010-10-28 | Microphone device and voice processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102456341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247298A (en) * | 2013-04-28 | 2013-08-14 | 华为技术有限公司 | Sensitivity calibration method and audio frequency apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05134679A (en) * | 1991-11-13 | 1993-05-28 | Matsushita Electric Ind Co Ltd | Adaptive type noise suppressing device |
| US5978824A (en) * | 1997-01-29 | 1999-11-02 | Nec Corporation | Noise canceler |
| CN101873363A (en) * | 2010-06-09 | 2010-10-27 | 中兴通讯股份有限公司 | Method and terminal for restraining noise by using double microphones |
| CN102348156A (en) * | 2010-07-29 | 2012-02-08 | 美商富迪科技股份有限公司 | Voice processing apparatus and method thereof |
-
2010
- 2010-10-28 CN CN2010105277760A patent/CN102456341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05134679A (en) * | 1991-11-13 | 1993-05-28 | Matsushita Electric Ind Co Ltd | Adaptive type noise suppressing device |
| US5978824A (en) * | 1997-01-29 | 1999-11-02 | Nec Corporation | Noise canceler |
| CN101873363A (en) * | 2010-06-09 | 2010-10-27 | 中兴通讯股份有限公司 | Method and terminal for restraining noise by using double microphones |
| CN102348156A (en) * | 2010-07-29 | 2012-02-08 | 美商富迪科技股份有限公司 | Voice processing apparatus and method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247298A (en) * | 2013-04-28 | 2013-08-14 | 华为技术有限公司 | Sensitivity calibration method and audio frequency apparatus |
| CN103247298B (en) * | 2013-04-28 | 2015-09-09 | 华为技术有限公司 | A kind of sensitivity correction method and audio frequency apparatus |
| US9374651B2 (en) | 2013-04-28 | 2016-06-21 | Huawei Technologies Co., Ltd. | Sensitivity calibration method and audio device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10343287B2 (en) | Robot voice direction-seeking turning system and method | |
| CN106098078B (en) | Voice recognition method and system capable of filtering loudspeaker noise | |
| CN105284129A (en) | Audio recording and playback apparatus | |
| RU2573225C2 (en) | Method and system for near field communication | |
| CN104065798A (en) | Sound signal processing method and device | |
| CN101770320B (en) | Differential detecting capacitance type touch control method and system | |
| EP2236744A3 (en) | Digital signal processing recievers, systems and methods for identifying decoded signals | |
| US20090280800A1 (en) | Testing system and method for testing mobile phone | |
| CN102668601A (en) | An apparatus | |
| CN107004426A (en) | The method and mobile terminal of the sound of admission video recording object | |
| US20210152216A1 (en) | Data transmission from a user terminal to another apparatus | |
| JP2005250397A (en) | Robot | |
| CN106548783A (en) | Sound enhancement method, device and intelligent sound box, intelligent television | |
| CN103915083A (en) | String instrument tone tuning method and device | |
| CN102957978B (en) | Microphone array and microphone array method for building up | |
| KR20100092256A (en) | Method for recognizing a text from an image | |
| CN102456341A (en) | Microphone device and voice processing method | |
| TW201127081A (en) | Microphone apparatus and sound processing method | |
| CN107592600B (en) | Pickup screening method and pickup device based on distributed microphones | |
| CN105188008A (en) | Method and device for testing audio output unit | |
| US11140484B2 (en) | Terminal, audio cooperative reproduction system, and content display apparatus | |
| CN103780757A (en) | System based on audio terminal opening application and opening method thereof | |
| JP2010193017A (en) | Video communication apparatus | |
| TW200622805A (en) | Medical media capture system and method | |
| CN107770679B (en) | Method for processing signals and corresponding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |