CN106162435A - A kind of mike monomer suppressing resonance - Google Patents
A kind of mike monomer suppressing resonance Download PDFInfo
- Publication number
- CN106162435A CN106162435A CN201510206440.7A CN201510206440A CN106162435A CN 106162435 A CN106162435 A CN 106162435A CN 201510206440 A CN201510206440 A CN 201510206440A CN 106162435 A CN106162435 A CN 106162435A
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- Prior art keywords
- amplifier
- coupled
- outfan
- equalizer
- mike
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Abstract
The present invention relates to technical field of electronic equipment, particularly relate to a kind of mike monomer suppressing resonance, by building a mike monomer including voltage input end, induction apparatus, biasing circuit, amplifier, equalizer, buffer and wave filter, this equalizer is arranged between amplifier and buffer, pass through the technical program, meet the mike requirement to frequency response, reach high frequency to be inhibited, the frequency eliminated is needed to be eliminated, audio signal is produced a desired effect by the regulation of equalizer, is effectively increased the quality after audio signal transmission.
Description
Technical field
The present invention relates to technical field of electronic equipment, particularly relate to a kind of mike suppressing resonance
Monomer.
Background technology
Mike requires to have certain requirement in actual applications to frequency response, and e.g., high frequency needs
Suppressing, certain frequency signal needs to eliminate, and wind is made an uproar, car is made an uproar or the power frequency of 50HZ is made an uproar
Needing suppression etc., in prior art, mike is mainly (integrated by the IC being integrated on pcb board
Circuit) and the amplifier that is encapsulated in a box-shape and buffer constitute, be encapsulated in metal
The effect playing radio shielding on pcb board it is arranged on, it is impossible to complete frequency response in shell
Requirement.
Put into metal-back due to sensor and will produce Andy Holmes resonance point, can allow frequency response upwards
Sticking up, additionally the car of low frequency is made an uproar, the power frequency of wind-dryness or 50HZ is made an uproar and when loudspeaker and mike
Loudspeaker are passed in the noise warning mike amplification produced time close again, form primary Ioops, increase
Add noise, therefore, how to have suppressed producing above-mentioned phenomenon and become what those skilled in the art faced
A great problem.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of mike monomer suppressing resonance, by
Directly add one between amplifier and buffer and include first order circuit, second level circuit and the third level
The equalizer of circuit, makes the sensing signal after amplifier amplifies become more mild, this skill
Art scheme particularly as follows:
A kind of mike monomer suppressing resonance, wherein, described mike monomer includes:
Power input；
Biasing circuit, is coupled to described power input, to export bias voltage；
Induction apparatus, one end is connected with described biasing circuit, to receive and to sense described bias voltage,
Obtain sensing signal and output it；
Amplifier, is connected with the other end of described induction apparatus, is amplified described sensing signal
Rear output；
Equalizer, is coupled to described amplifier, with regulation sensing letter after amplifier amplifies
Number；
Buffer, is connected with described equalizer, passes through with the sensing signal after ensureing described amplification
Data synchronization transmissions after described equalizer；
Wave filter, is coupled to described buffer, is filtered through the sensing after described buffer processes
Signal.
Above-mentioned mike monomer, wherein, first order circuit that described equalizer includes being sequentially connected with,
Second level circuit and tertiary circuit, wherein:
First order circuit is connected with the outfan of described amplifier；
Tertiary circuit is connected with the input of described buffer.
Above-mentioned mike monomer, wherein, described first order circuit also includes:
First amplifier, the normal phase input end of described first amplifier and one first voltage connect；
First electric capacity, described first be capacitively coupled to described first amplifier inverting input and
Outfan；
One resistance, described resistance is in parallel with described first electric capacity.
Above-mentioned mike monomer, wherein, described second level circuit also includes:
Second amplifier, the normal phase input end of described second amplifier and one second voltage connect；
The inverting input of described second amplifier is coupled to the outfan of described first amplifier；
One resistance, is coupled to inverting input and the outfan of described second amplifier.
Above-mentioned mike monomer, wherein, described tertiary circuit also includes:
3rd amplifier, described 3rd amplifier normal phase input end and a tertiary voltage connect；
One electric capacity, is coupled to inverting input and the outfan of described 3rd amplifier；
The inverting input of described 3rd amplifier is coupled to the outfan of described second amplifier.
Above-mentioned mike monomer, wherein, described induction apparatus is a capacitive sensing device.
Preferably, the first voltage, the second voltage, tertiary voltage are equal.
The beneficial effect that the present invention has the advantage that and can reach:
By using the technical program, effectively prevent the generation of echo, effectively inhibit simultaneously
A part during low frequency wind is made an uproar, car is made an uproar or the power frequency of 50HZ is made an uproar, makes the audio frequency of output believe
Number more mild, effectively inhibit the generation of noise, reach the requirement to frequency response.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, this
Bright and characteristic shape and advantage will become more apparent.Labelling identical in whole accompanying drawings
Indicate identical part.Can not be drawn to scale accompanying drawing, it is preferred that emphasis is the present invention is shown
Purport.
Fig. 1 is prior art mike internal components structural representation；
Fig. 2 is mike internal components structural representation in the embodiment of the present invention；
Fig. 3 is equalizer internal circuit diagram in the embodiment of the present invention.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings, but not
Restriction as the present invention.
Structure shown in Figure 1, in traditional method, mike internal components structure chart, specifically wraps
Include an induction apparatus 1, biasing circuit 2, amplifier 3, buffer 4 and wave filter 5, the most partially
The voltage that voltage input end VDD inputs is converted to bias voltage by circuits, and induction apparatus 1 can
Being a capacitance inductor, the biasing voltage signal that biasing circuit provides is transmitted by induction apparatus 1
To amplifier 3, the sensing signal after amplifier amplifies eventually passes filter through buffer 4
Ripple device 5 filters out some clutters, then exports.
See structure shown in accompanying drawing 2, for the embodiment of the present invention includes the Mike of suppression resonance
Wind monomer internal components structural representation, mainly includes voltage input end VDD, induction apparatus 1,
Biasing circuit 2, amplifier 3, equalizer 6, buffer 4 and wave filter 5, wherein:
Biasing circuit 2, is coupled to voltage input end VDD, to export bias voltage；
Induction apparatus 1, one end is connected with the outfan of biasing circuit 2, to receive and to sense biasing
The bias voltage of circuit 2 output, obtains sensing signal and outputs it；
Amplifier 3, be coupled to induction apparatus 1 relative to the one end being connected with biasing circuit 2
The other end, the sensing signal obtaining the induction apparatus 1 got exports after being amplified；
Equalizer 6, is coupled to another relative to the one end being connected with induction apparatus 1 of amplifier 3
One end, with regulation sensing signal after amplifier 3 amplifies；
Buffer 4, the input of this buffer is connected with the outfan of equalizer 6, to ensure
Sensing signal synchronous transfer after equalizer equalizes；
Wave filter 5, is coupled to the outfan of buffer, is filtered through the sense after buffer processes
Survey signal.
As a preferred embodiment of the invention, structure shown in Figure 3, equalizer 6 includes
First order circuit 7, second level circuit 8 and tertiary circuit 9.
On this basis, further, first order circuit 7 specifically includes:
First amplifier 10, the normal phase input end of the first amplifier 10 and one first voltage connect；
First electric capacity, first is capacitively coupled to inverting input and the outfan of the first amplifier；
Resistance R2, this resistance and the first electric capacity are in parallel.
Second level circuit 8 is a scaling circuit, specifically includes:
Second amplifier 11, the normal phase input end of the second amplifier 11 and one second voltage connect；
The inverting input of the second amplifier 11 is coupled to the outfan of the first amplifier；
One resistance R4, is coupled to inverting input and the outfan of the second amplifier 11.
Tertiary circuit 9 specifically includes:
3rd amplifier 12, the normal phase input end of the 3rd amplifier 12 and a tertiary voltage connect；
One electric capacity, this inverting input being capacitively coupled to the 3rd amplifier 12 and outfan；
The inverting input of the 3rd amplifier 12 is coupled to the outfan of the second amplifier 11.
As a preferred embodiment of the invention, the first voltage, the second voltage, tertiary voltage are equal
Equal.
As a preferred embodiment of the invention, the second amplifier 11 and the first amplifier 10 it
Between connect have a resistance R3.
As a preferred embodiment of the invention, the reverse input end of the 3rd amplifier 12 and
The outfan of two amplifiers 11 connects a resistance R5.
As a preferred embodiment of the invention, equalizer also comprises a negative feedback resistor R6,
This negative feedback resistor is connected between the input of equalizer and outfan.
In sum, the present invention is by building a mike monomer including equalizer so that wind
Dry, car is made an uproar etc. and to be eliminated, and effectively inhibits high frequency, effectively allows audio signal pass through this
Equalizer is adjusted thus gets a desired effect.
It should be appreciated by those skilled in the art that those skilled in the art combine prior art and
Above-described embodiment can realize described change case, does not repeats at this.Such change case is not
Affect the flesh and blood of the present invention, do not repeat them here.
Above presently preferred embodiments of the present invention is described.It is to be appreciated that the present invention
Being not limited to above-mentioned particular implementation, the equipment and the structure that do not describe in detail the most to the greatest extent should
It is interpreted as being practiced with the common mode in this area；Any it is familiar with those skilled in the art
Member, without departing under technical solution of the present invention ambit, the method that all may utilize the disclosure above
With technology contents, technical solution of the present invention made many possible variations and modification, or be revised as
The Equivalent embodiments of equivalent variations, this has no effect on the flesh and blood of the present invention.Therefore, every
Without departing from the content of technical solution of the present invention, the technical spirit of the foundation present invention is to above example
Any simple modification, equivalent variations and the modification done, all still falls within technical solution of the present invention and protects
The scope protected.
Claims (6)
1. the mike monomer suppressing resonance, it is characterised in that described mike monomer
Including:
Power input；
Biasing circuit, is coupled to described power input, to export bias voltage；
Induction apparatus, one end is connected with described biasing circuit, to receive and to sense described bias voltage,
Obtain sensing signal and output it；
Amplifier, is connected with the other end of described induction apparatus, is amplified described sensing signal
Rear output；
Equalizer, is coupled to described amplifier, with regulation sensing letter after amplifier amplifies
Number；
Buffer, is connected with described equalizer, passes through with the sensing signal after ensureing described amplification
Data synchronization transmissions after described equalizer；
Wave filter, is coupled to described buffer, is filtered through the sensing after described buffer processes
Signal.
2. mike monomer as claimed in claim 1, it is characterised in that described equalizer bag
Include first order circuit, second level circuit and the tertiary circuit being sequentially connected with, wherein:
First order circuit is connected with the outfan of described amplifier；
Tertiary circuit is connected with the input of described buffer.
3. mike monomer as claimed in claim 2, it is characterised in that described first order electricity
Road also includes:
First amplifier, the normal phase input end of described first amplifier and one first voltage connect；
First electric capacity, described first be capacitively coupled to described first amplifier inverting input and
Outfan；
One resistance, described resistance is in parallel with described first electric capacity.
4. mike monomer as claimed in claim 2, it is characterised in that described second level electricity
Road also includes:
Second amplifier, the normal phase input end of described second amplifier and one second voltage connect；
The inverting input of described second amplifier is coupled to the outfan of described first amplifier；
One resistance, is coupled to inverting input and the outfan of described second amplifier.
5. mike monomer as claimed in claim 2, it is characterised in that described third level electricity
Road also includes:
3rd amplifier, described 3rd amplifier normal phase input end and a tertiary voltage connect；
One electric capacity, is coupled to inverting input and the outfan of described 3rd amplifier；
The inverting input of described 3rd amplifier is coupled to the outfan of described second amplifier.
6. mike monomer as claimed in claim 1, it is characterised in that described induction apparatus is
One capacitive sensing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206440.7A CN106162435A (en) | 2015-04-24 | 2015-04-24 | A kind of mike monomer suppressing resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206440.7A CN106162435A (en) | 2015-04-24 | 2015-04-24 | A kind of mike monomer suppressing resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106162435A true CN106162435A (en) | 2016-11-23 |
Family
ID=57346920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206440.7A Pending CN106162435A (en) | 2015-04-24 | 2015-04-24 | A kind of mike monomer suppressing resonance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658287A (en) * | 2016-11-11 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
| CN106658303A (en) * | 2016-12-01 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646873A (en) * | 1986-03-04 | 1987-03-03 | Electro-Voice, Inc. | Microphone and acoustic equalizer therefor |
| JPH1069280A (en) * | 1996-06-17 | 1998-03-10 | Yamaha Corp | Sound field control unit and sound field controller |
| US5768398A (en) * | 1995-04-03 | 1998-06-16 | U.S. Philips Corporation | Signal amplification system with automatic equalizer |
| JP2001189988A (en) * | 1999-12-28 | 2001-07-10 | Matsushita Electric Ind Co Ltd | Microphone unit and wireless unit having the microphone unit |
| CN1304230A (en) * | 1999-11-24 | 2001-07-18 | 赵锦伟 | Voice-frequency signal preprocessing device of radio sound transmitting equipment |
| US20080298621A1 (en) * | 2007-06-01 | 2008-12-04 | Infineon Technologies Ag | Module including a micro-electro-mechanical microphone |
| US20100158268A1 (en) * | 2008-12-23 | 2010-06-24 | Tandberg Telecom As | Toroid microphone apparatus |
| CN203027447U (en) * | 2012-10-19 | 2013-06-26 | 深圳Tcl新技术有限公司 | Microphone audio output circuit and microphone |
| US20140294226A1 (en) * | 2011-02-25 | 2014-10-02 | Nokia Corporation | Transducer apparatus with a tension actuator |
| CN204929209U (en) * | 2015-04-24 | 2015-12-30 | 钰太芯微电子科技（上海）有限公司 | Microphone monomer that restraines resonance |
-
2015
- 2015-04-24 CN CN201510206440.7A patent/CN106162435A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646873A (en) * | 1986-03-04 | 1987-03-03 | Electro-Voice, Inc. | Microphone and acoustic equalizer therefor |
| US5768398A (en) * | 1995-04-03 | 1998-06-16 | U.S. Philips Corporation | Signal amplification system with automatic equalizer |
| JPH1069280A (en) * | 1996-06-17 | 1998-03-10 | Yamaha Corp | Sound field control unit and sound field controller |
| CN1304230A (en) * | 1999-11-24 | 2001-07-18 | 赵锦伟 | Voice-frequency signal preprocessing device of radio sound transmitting equipment |
| JP2001189988A (en) * | 1999-12-28 | 2001-07-10 | Matsushita Electric Ind Co Ltd | Microphone unit and wireless unit having the microphone unit |
| US20080298621A1 (en) * | 2007-06-01 | 2008-12-04 | Infineon Technologies Ag | Module including a micro-electro-mechanical microphone |
| US20100158268A1 (en) * | 2008-12-23 | 2010-06-24 | Tandberg Telecom As | Toroid microphone apparatus |
| US20140294226A1 (en) * | 2011-02-25 | 2014-10-02 | Nokia Corporation | Transducer apparatus with a tension actuator |
| CN203027447U (en) * | 2012-10-19 | 2013-06-26 | 深圳Tcl新技术有限公司 | Microphone audio output circuit and microphone |
| CN204929209U (en) * | 2015-04-24 | 2015-12-30 | 钰太芯微电子科技（上海）有限公司 | Microphone monomer that restraines resonance |
Non-Patent Citations (1)
| Title |
|---|
| 黄小平: "MED25101数字卡拉OK音频处理器", 《电子技术》, pages 523 - 526 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658287A (en) * | 2016-11-11 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
| CN106658303A (en) * | 2016-12-01 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
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