CN107087239B - The processing method and processing device of voice signal, microphone - Google Patents
The processing method and processing device of voice signal, microphone Download PDFInfo
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- CN107087239B CN107087239B CN201710217002.XA CN201710217002A CN107087239B CN 107087239 B CN107087239 B CN 107087239B CN 201710217002 A CN201710217002 A CN 201710217002A CN 107087239 B CN107087239 B CN 107087239B
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
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- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a kind of processing method and processing devices of voice signal, microphone, microphone is provided with the first sound hole and the second sound hole, this method comprises: the first voice signal and second sound signal that will be entered by the first sound hole, the third voice signal and falling tone sound signal entered by the second sound hole is converted to corresponding first electric signal, the second electric signal, third electric signal and the 4th electric signal；According to the receiving time information of aforementioned four voice signal, it is the signal of opposite in phase by the first electric signal and the second Electric signal processing, it and by third electric signal and the 4th Electric signal processing is the identical signal of phase, or, it is the signal of opposite in phase by third electric signal and the 4th Electric signal processing, and by the first electric signal and the second Electric signal processing is the identical signal of phase；Differential amplification processing is carried out to treated the first electric signal and the second electric signal and third electric signal and the 4th electric signal respectively, obtains output electric signal.
Description
Technical field
The present invention relates to microphone techniques fields, processing method and processing device, wheat more particularly, to a kind of voice signal
Gram wind.
Background technique
Microphone (Microphone) is a kind of energy converter for converting tones into electronic signal.Microphone is by initially passing through
Resistance is converted acoustic-electric development and is converted into inductance, condenser type, and a large amount of new microphone techniques have gradually developed.
In the prior art, when microphone setting is there are two when sound hole, sound enters from the two sound holes, then, right
Voice signal is converted, the electric signal after being converted, which is the voice signal conversion entered by two sound holes
It forms, since voice signal comes from both direction, the output for the voice signal that can not be singly directed toward.
Summary of the invention
It is an object of the present invention to provide a kind of processing method and processing devices of voice signal, the new technology side of microphone
Case.
According to the first aspect of the invention, a kind of processing unit of voice signal is provided, microphone, the wheat are applied to
Gram wind is provided with the first sound hole and the second sound hole, comprising:
Signal conversion part, for the first voice signal and rising tone message of first sound hole entrance will to be passed through
Number, and corresponding first telecommunications is converted to by the third voice signal and falling tone sound signal of second sound hole entrance
Number, the second electric signal, third electric signal and the 4th electric signal；
Delay process component, for being believed according to first voice signal, the second sound signal, the third sound
Number and the falling tone sound signal receiving time information, be phase by first electric signal and second Electric signal processing
Opposite signal, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase, alternatively, by institute
State the signal that third electric signal and the 4th Electric signal processing are opposite in phase, and by first electric signal and described the
Two Electric signal processings are the identical signal of phase；
Differential amplification processing component, for being carried out at differential amplification to treated the first electric signal and the second electric signal
Reason, and differential amplification processing is carried out to treated third electric signal and the 4th electric signal, obtain output electric signal.
Optionally, the delay process component is also used to:
If the receiving time of first voice signal and the second sound signal earlier than the third voice signal and
It is then opposite in phase by first electric signal and second Electric signal processing when receiving time of the falling tone sound signal
Signal, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase；
If the receiving time of the third voice signal and the falling tone sound signal earlier than first voice signal and
It is then opposite in phase by the third electric signal and the 4th Electric signal processing when receiving time of the second sound signal
Signal, and by first electric signal and second Electric signal processing be the identical signal of phase.
Optionally, the signal conversion part includes the first signal conversion part and second signal converting member, wherein institute
State voice signal of first signal conversion part for that will enter by first sound hole and by second sound hole
The voice signal of entrance is respectively converted into corresponding electric signal, the second signal converting member for will by described first into
The voice signal and corresponding electric signal is respectively converted by the voice signal that second sound hole enters that acoustic aperture enters.
Optionally, first signal conversion part includes the first vibrating diaphragm and the first pole plate, the second signal converter section
Part includes the second vibrating diaphragm and the second pole plate.
Optionally, first signal conversion part is disposed in proximity to the position of first sound hole, second letter
Number converting member is disposed in proximity to the position of second sound hole.
According to the second aspect of the invention, a kind of microphone is provided, the microphone is provided with the first sound hole and
Two sound holes, the processing unit including the voice signal as described in any of the above-described.
According to the third aspect of the invention we, a kind of processing method of voice signal is provided, microphone, the wheat are applied to
Gram wind is provided with the first sound hole and the second sound hole, which comprises
The first voice signal and second sound signal that will be entered by first sound hole, and pass through described second
The third voice signal and falling tone sound signal that sound hole enters are converted to corresponding first electric signal, the second electric signal, third
Electric signal and the 4th electric signal；
According to first voice signal, the second sound signal, the third voice signal and the falling tone sound
First electric signal and second Electric signal processing are the signal of opposite in phase by the receiving time information of signal, and
Be the identical signal of phase by the third electric signal and the 4th Electric signal processing, alternatively, by the third electric signal and
4th Electric signal processing is the signal of opposite in phase, and is by first electric signal and second Electric signal processing
The identical signal of phase；
Differential amplification processing carried out to treated the first electric signal and the second electric signal, and to treated third electricity
Signal and the 4th electric signal carry out differential amplification processing, obtain output electric signal.
Optionally, according to first voice signal, the second sound signal, the third voice signal and described
First electric signal and second Electric signal processing are the letter of opposite in phase by the receiving time information of four voice signals
Number, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase, alternatively, by the third electricity
Signal and the 4th Electric signal processing are the signal of opposite in phase, and by first electric signal and second electric signal
Processing is the identical signal of phase, comprising:
If the receiving time of first voice signal and the second sound signal earlier than the third voice signal and
It is then opposite in phase by first electric signal and second Electric signal processing when receiving time of the falling tone sound signal
Signal, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase；
If the receiving time of the third voice signal and the falling tone sound signal earlier than first voice signal and
It is then opposite in phase by the third electric signal and the 4th Electric signal processing when receiving time of the second sound signal
Signal, and by first electric signal and second Electric signal processing be the identical signal of phase.
Processing method, device and the microphone of voice signal provided in an embodiment of the present invention, by will be converted to
One electric signal and the second Electric signal processing are the signal of opposite in phase, and by third electric signal and the 4th Electric signal processing are phase
The identical signal in position, alternatively, be the signal of opposite in phase by third electric signal and the 4th Electric signal processing, and by the first telecommunications
Number and the second Electric signal processing be the identical signal of phase, then carry out differential amplification processing again so that pass through two sound holes
In the voice signal that enters of a sound hole be eliminated, be amplified by the voice signal that another sound hole enters, it is real
The output of the voice signal of single direction is showed.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 shows the structural schematic diagram of microphone according to an embodiment of the invention.
Fig. 2 shows the structural schematic diagrams of the processing unit of voice signal according to an embodiment of the invention.
Fig. 3 shows the structural schematic diagram of signal conversion part according to an embodiment of the invention.
Fig. 4 shows another structural schematic diagram of microphone according to an embodiment of the invention.
Fig. 5 shows the process flow diagram of the processing method of voice signal according to an embodiment of the invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
An embodiment provides a kind of processing units of voice signal.The processing unit of the voice signal is answered
For microphone, wherein the microphone is provided with the first sound hole and the second sound hole.Fig. 1 shows one according to the present invention
The structural schematic diagram of the microphone of embodiment.Referring to Fig. 1, microphone includes front housing 110, rear shell 120 and circuit board module
130, wherein be provided with the first sound hole 110a on front housing 110, the second sound hole 120a is provided in rear shell.Fig. 2 shows
The structural schematic diagram of the processing unit of voice signal according to an embodiment of the invention.Referring to fig. 2, the processing of voice signal
Device includes at least: signal conversion part 210, delay process component 220 and differential amplification processing component 230.Signal conversion part
First voice signal and second sound signal of the part 210 for will be entered by the first sound hole, and pass through the second sound hole
The third voice signal and falling tone sound signal of entrance are converted to corresponding first electric signal, the second electric signal, third electric signal
With the 4th electric signal.Delay process component 220, for according to the first voice signal, second sound signal, third voice signal and
First electric signal and the second Electric signal processing are the signal of opposite in phase by the receiving time information of falling tone sound signal, and
It is the identical signal of phase by third electric signal and the 4th Electric signal processing, alternatively, by third electric signal and the 4th electric signal
Reason is the signal of opposite in phase, and by the first electric signal and the second Electric signal processing is the identical signal of phase.Differential amplification
Processing component 230, for carrying out differential amplification processing to treated the first electric signal and the second electric signal, and to processing after
Third electric signal and the 4th electric signal carry out differential amplification processing, obtain output electric signal.
The processing unit of voice signal provided in an embodiment of the present invention passes through the first electric signal that will be converted to and second
Electric signal processing is the signal of opposite in phase, and by third electric signal and the 4th Electric signal processing is the identical signal of phase,
Alternatively, be the signal of opposite in phase by third electric signal and the 4th Electric signal processing, and by the first electric signal and the second telecommunications
Number processing is the identical signal of phase, then carries out differential amplification processing again, so that by one in two sound holes into sound
The voice signal that hole enters is eliminated, and is amplified by the voice signal that another sound hole enters, and is realized and is singly directed toward
The output of voice signal.
In one embodiment of the present of invention, signal conversion part 210 includes that the first signal conversion part and second signal turn
Change component.Microphone provided in an embodiment of the present invention is provided with the first sound hole and the second sound hole, so that the first signal is converted
Component had not only received the voice signal entered by the first sound hole, but also received the sound letter entered by the second sound hole
Number and second signal converting member not only received the voice signal entered by the first sound hole, but also receive by second
The voice signal that sound hole enters.When the first signal conversion part receives the voice signal entered by the first sound hole and leads to
When crossing the voice signal of the second sound hole entrance, receive two voice signals are converted into corresponding electric signal respectively.When
Second signal converting member receives the voice signal entered by the first sound hole and the sound entered by the second sound hole
When signal, receive two voice signals are converted into corresponding electric signal respectively.
In one embodiment of the present of invention, Fig. 3 shows the knot of signal conversion part according to an embodiment of the invention
Structure schematic diagram.Referring to Fig. 3, signal conversion part includes the first signal conversion part 310 and second signal converting member 320.The
One signal conversion part 310 includes at least the first vibrating diaphragm 3110 and the first pole plate 3120.Second signal converting member includes at least
Second vibrating diaphragm 3210 and the second pole plate 3220.Wherein, the first vibrating diaphragm 3110 and the second vibrating diaphragm 3210 are per se with charge, when first
When vibrating diaphragm 3110 and the second vibrating diaphragm 3210 are vibrated, due to vibration so that the distance of the first vibrating diaphragm 3110 and the first pole plate 3120
The distance of change and the second vibrating diaphragm 3210 and the second pole plate 3220 changes, i.e. capacitor C changes, and then causes the variation of voltage.
The size of voltage change, reflects the power of acoustic pressure, and the frequency of voltage change reflects the frequency of external sound.The present invention is implemented
In example, the first vibrating diaphragm 3110 and the second vibrating diaphragm 3210 are preferably perfluoroethylene-propylene.In addition, the first pole plate 3120 and the second pole plate
3220 can be two pieces of pole plates being independently arranged, and be first with needing to add explanation alternatively, can also be integrated the pole plate of type setting
Insulating layer is provided between pole plate 3120 and the second pole plate 3220.
In one embodiment of the present of invention, the first signal conversion part is disposed in proximity to the position of the first sound hole, and second
Signal conversion part is disposed in proximity to the position of the second sound hole；Alternatively, the first signal conversion part be disposed in proximity to second into
The position of acoustic aperture, second signal converting member are disposed in proximity to the position of the first sound hole.In this regard, the present invention does not do any limit
It is fixed.
In one embodiment of the present of invention, for sound source close to the first sound hole, the first signal conversion part is disposed in proximity to
The position of one sound hole, second signal converting member are disposed in proximity to the position of the second sound hole.The voice signal that sound source issues
It can be entered by the first sound hole and the second sound hole.First signal conversion part receives the sound entered by the first sound hole
Sound signal, as the first voice signal, second signal converting member receives the voice signal entered by the first sound hole, makees
For second sound signal.First signal conversion part receives the voice signal entered by the second sound hole, as third sound
Sound signal, second signal converting member receives the voice signal entered by the second sound hole, as falling tone sound signal.The
One voice signal, second sound signal, third voice signal and falling tone sound signal receiving time be different so that first
The second electric signal that the first electric signal, the second sound signal that voice signal is converted to are converted to, third voice signal turn
There are phase differences for the phase for the 4th electric signal that the third electric signal got in return, falling tone sound signal are converted to.I.e. due to sound
Source is close to the first sound hole, when so that passing through the reception after the first voice signal and second sound signal that the first sound hole enters
Between earlier than by the second sound hole enter third voice signal and falling tone sound signal receiving time so that corresponding first
Electric signal, the second electric signal, third electric signal and the 4th electric signal phase there are phase differences.Delay process component 220 is by
One electric signal and the second electric signal become the signal of opposite in phase, and third electric signal and the 4th electric signal are become phase phase
Same signal.Then, differential amplification processing component 230 carries out differential amplification to treated the first electric signal and the second electric signal
Processing, obtain the first electric signal or the second electric signal be amplified twice after electric signal, and to treated third electric signal
Differential amplification processing, the electric signal being eliminated are carried out with the 4th electric signal, the electric signal of final output is the first electric signal
Or second electric signal be amplified twice after electric signal.The electric signal of final output is the sound by being entered by the first sound hole
What signal processing obtained, it is eliminated by the voice signal that the second sound hole enters, realizes the voice signal being singly directed toward
Output.
In one embodiment of the present of invention, for sound source close to the second sound hole, the first signal conversion part is disposed in proximity to
The position of one sound hole, second signal converting member are disposed in proximity to the position of the second sound hole.First signal conversion part connects
The voice signal entered by the first sound hole is received, as the first voice signal, second signal converting member, which receives, to be passed through
The voice signal that first sound hole enters, as second sound signal.First signal conversion part is received by second into sound
The voice signal that hole enters, as third voice signal, second signal converting member is received through the entrance of the second sound hole
Voice signal, as falling tone sound signal.First voice signal, second sound signal, third voice signal and falling tone message
Number receiving time be different so that the first electric signal, second sound signal that the first voice signal is converted to are converted
To the second electric signal, the 4th electricity that is converted to of the third electric signal that is converted to of third voice signal, falling tone sound signal
There are phase differences for the phase of signal.I.e. since sound source is close to the second sound hole, so that the third sound entered by the second sound hole
The receiving time of sound signal and falling tone sound signal is earlier than the first voice signal and second sound entered by the first sound hole
The receiving time of signal so that corresponding first electric signal, the second electric signal, third electric signal and the 4th electric signal phase deposit
In phase difference.Third electric signal and the 4th electric signal are become the signal of opposite in phase by delay process component 220, and by first
Electric signal and the second electric signal become the identical signal of phase.Then, third is electric to treated for differential amplification processing component 230
Signal and the 4th electric signal carry out differential amplification processing, obtain third electric signal or the 4th electric signal be amplified twice after telecommunications
Number, and differential amplification processing, the electric signal being eliminated are carried out to treated the first electric signal and the second electric signal.Most
The electric signal exported eventually is the electric signal after third electric signal or the 4th electric signal are amplified twice.The electric signal of final output is
It is obtained by the sound signal processing entered by the second sound hole, is eliminated by the voice signal that the first sound hole enters
Fall, realizes the output for the voice signal being singly directed toward.
Based on the same inventive concept, the present invention also provides a kind of microphones.Fig. 4 shows an implementation according to the present invention
Another structural schematic diagram of the microphone of example.Referring to fig. 4, microphone 400 includes at least the sound that any of the above-described embodiment provides
The processing unit 410 of sound signal.
Based on the same inventive concept, the present invention also provides a kind of processing methods of voice signal.This method is applied to wheat
Gram wind, the microphone are provided with the first sound hole and the second sound hole.Fig. 5 shows sound according to an embodiment of the invention
The process flow diagram of the processing method of signal.Referring to Fig. 5, this method includes at least step S502 to step S506.
Step S502, the first voice signal and second sound signal that will be entered by the first sound hole, and pass through the
The third voice signal and falling tone sound signal that two sound holes enter are converted to corresponding first electric signal, the second electric signal, the
Three electric signals and the 4th electric signal；
Step S504, according to connecing for the first voice signal, second sound signal, third voice signal and falling tone sound signal
Temporal information is received, is the signal of opposite in phase by the first electric signal and the second Electric signal processing, and by third electric signal and the
Four Electric signal processings are the identical signal of phase, alternatively, being the letter of opposite in phase by third electric signal and the 4th Electric signal processing
Number, and by the first electric signal and the second Electric signal processing be the identical signal of phase；
Step S506 carries out differential amplification processing to treated the first electric signal and the second electric signal, and to processing
Third electric signal and the 4th electric signal afterwards carries out differential amplification processing, obtains output electric signal.
In one embodiment of the present of invention, if above-mentioned steps S504 is specially the first voice signal and second sound signal
When receiving time is earlier than the receiving time of third voice signal and falling tone sound signal, then by the first electric signal and the second electric signal
Processing is the signal of opposite in phase, and by third electric signal and the 4th Electric signal processing is the identical signal of phase；If third
When the receiving time of voice signal and falling tone sound signal is earlier than the receiving time of the first voice signal and second sound signal, then
It is the signal of opposite in phase by third electric signal and the 4th Electric signal processing, and by the first electric signal and the second Electric signal processing
For the identical signal of phase.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (6)
1. a kind of processing unit of voice signal, be applied to microphone, the microphone be provided with the first sound hole and second into
Acoustic aperture characterized by comprising
Signal conversion part, the first voice signal and second sound signal for will be entered by first sound hole, with
And the third voice signal and falling tone sound signal entered by second sound hole is converted to corresponding first electric signal, the
Two electric signals, third electric signal and the 4th electric signal；
Delay process component, for according to first voice signal, the second sound signal, the third voice signal and
First electric signal and second Electric signal processing are opposite in phase by the receiving time information of the falling tone sound signal
Signal, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase, alternatively, by described the
Three electric signals and the 4th Electric signal processing are the signal of opposite in phase, and will first electric signal and described second electric
Signal processing is the identical signal of phase；
Differential amplification processing component, for carrying out differential amplification processing to treated the first electric signal and the second electric signal, with
And differential amplification processing is carried out to treated third electric signal and the 4th electric signal, obtain output electric signal, wherein
The delay process component is also used to:
If the receiving time of first voice signal and the second sound signal is earlier than the third voice signal and described
It is then the letter of opposite in phase by first electric signal and second Electric signal processing when receiving time of falling tone sound signal
Number, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase；
If the receiving time of the third voice signal and the falling tone sound signal is earlier than first voice signal and described
It is then the letter of opposite in phase by the third electric signal and the 4th Electric signal processing when receiving time of second sound signal
Number, and by first electric signal and second Electric signal processing be the identical signal of phase.
2. the apparatus according to claim 1, which is characterized in that the signal conversion part includes the first signal conversion part
With second signal converting member, wherein sound of first signal conversion part for will be entered by first sound hole
Sound signal and corresponding electric signal is respectively converted by the voice signal that second sound hole enters, the second signal turns
Component is changed for that will believe by the voice signal of first sound hole entrance and by the sound that second sound hole enters
Number it is respectively converted into corresponding electric signal.
3. the apparatus of claim 2, which is characterized in that first signal conversion part includes the first vibrating diaphragm and the
One pole plate, the second signal converting member include the second vibrating diaphragm and the second pole plate.
4. the apparatus of claim 2, which is characterized in that first signal conversion part is disposed in proximity to described
The position of one sound hole, the second signal converting member are disposed in proximity to the position of second sound hole.
5. a kind of microphone, the microphone is provided with the first sound hole and the second sound hole, which is characterized in that including such as right
It is required that the processing unit of any voice signal of 1-4.
6. a kind of processing method of voice signal, be applied to microphone, the microphone be provided with the first sound hole and second into
Acoustic aperture, which is characterized in that the described method includes:
The first voice signal and second sound signal that will be entered by first sound hole, and pass through described second into sound
The third voice signal and falling tone sound signal that hole enters are converted to corresponding first electric signal, the second electric signal, third telecommunications
Number and the 4th electric signal；
According to first voice signal, the second sound signal, the third voice signal and the falling tone sound signal
Receiving time information, be the signal of opposite in phase by first electric signal and second Electric signal processing, and by institute
Stating third electric signal and the 4th Electric signal processing is the identical signal of phase, alternatively, by the third electric signal and described
4th Electric signal processing is the signal of opposite in phase, and by first electric signal and second Electric signal processing is phase
Identical signal；
Differential amplification processing carried out to treated the first electric signal and the second electric signal, and to treated third electric signal
Differential amplification processing is carried out with the 4th electric signal, obtains output electric signal, wherein
According to first voice signal, the second sound signal, the third voice signal and the falling tone sound signal
Receiving time information, be the signal of opposite in phase by first electric signal and second Electric signal processing, and by institute
Stating third electric signal and the 4th Electric signal processing is the identical signal of phase, alternatively, by the third electric signal and described
4th Electric signal processing is the signal of opposite in phase, and by first electric signal and second Electric signal processing is phase
Identical signal, comprising:
If the receiving time of first voice signal and the second sound signal is earlier than the third voice signal and described
It is then the letter of opposite in phase by first electric signal and second Electric signal processing when receiving time of falling tone sound signal
Number, and by the third electric signal and the 4th Electric signal processing be the identical signal of phase；
If the receiving time of the third voice signal and the falling tone sound signal is earlier than first voice signal and described
It is then the letter of opposite in phase by the third electric signal and the 4th Electric signal processing when receiving time of second sound signal
Number, and by first electric signal and second Electric signal processing be the identical signal of phase.
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| CN108156545B (en) * | 2018-02-11 | 2024-02-09 | 北京中电慧声科技有限公司 | Array microphone |
| CN112769981A (en) * | 2019-11-06 | 2021-05-07 | 北京小米移动软件有限公司 | Electronic device and audio output method |
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| CN105611474B (en) * | 2014-11-24 | 2019-01-29 | 山东共达电声股份有限公司 | A kind of silicon capacitor microphone |
| CN106162475A (en) * | 2015-03-23 | 2016-11-23 | 钰太芯微电子科技（上海）有限公司 | Identification of sound source system based on mike and intelligent appliance equipment |
| CN204795237U (en) * | 2015-07-31 | 2015-11-18 | 合肥赛为智能有限公司 | Intercom system isolation transformer antisidetone circuit |
| CN205847530U (en) * | 2016-07-06 | 2016-12-28 | 微鲸科技有限公司 | Audio-frequence player device |
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2017
- 2017-04-05 CN CN201710217002.XA patent/CN107087239B/en active Active
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Effective date of registration: 20200612 Address after: 261031 building 10, Geer phase II Industrial Park, No. 102, Ronghua Road, Ronghua community, Xincheng street, high tech Zone, Weifang City, Shandong Province Patentee after: Weifang goer Microelectronics Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: GOERTEK Inc. |