CN108134974A - A kind of microphone and promotion overload acoustic pressure method - Google Patents
A kind of microphone and promotion overload acoustic pressure method Download PDFInfo
- Publication number
- CN108134974A CN108134974A CN201711446334.1A CN201711446334A CN108134974A CN 108134974 A CN108134974 A CN 108134974A CN 201711446334 A CN201711446334 A CN 201711446334A CN 108134974 A CN108134974 A CN 108134974A
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- China
- Prior art keywords
- microphone
- threshold
- output voltage
- control signal
- threshold value
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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
- 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
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention discloses a kind of microphone, including monitoring and controlling module, monitors the output voltage of microphone, forms first control signal according to output voltage and the threshold value of setting and second control signal exports；Pumping source is electrically connected with capacitor, and driving voltage is reduced according to first control signal；It can also include amplifier, be electrically connected with capacitor, output voltage amplification factor is reduced according to second control signal.By the effect of pumping source and amplifier, microphone overload acoustic pressure performance is promoted, microphone is made to enter high sound pressure protected mode.The invention also discloses a kind of promotions based on microphone to overload acoustic pressure method.The present invention can promote the high sound pressure tolerance of microphone products, so as to which the voice signal picked up be avoided to be distorted when user is higher using the acoustic pressure of microphone.
Description
Technical field
The present invention relates to sound signal processing technical fields, more particularly, to a kind of microphone and promote overload acoustic pressure
Method.
Background technology
When user is using microphone, song is excessive, voice is excessively high, when causing output voltage higher, is such as higher than 130dBSPL
The corresponding voltage of acoustic pressure, the microphone signal voltage being exaggerated has exceeded the best effort range of sound treatment circuit, so as to lead
The voice signal picked up distortion is caused, microphone property reduces.
Accordingly, it is desirable to provide a kind of microphone and promotion overload acoustic pressure method.
Invention content
It is an object of the present invention to provide a kind of microphones.
It is another object of the present invention to provide a kind of promotions based on microphone to overload acoustic pressure method.
In order to achieve the above objectives, the present invention uses following technical proposals：
A kind of microphone, including capacitor, including
Monitoring and controlling module monitors the output voltage of microphone, and the is formed according to the output voltage and the threshold value of setting
One control signal output；
Pumping source is electrically connected with capacitor, and driving voltage is reduced according to first control signal.
Preferably, the threshold value includes first threshold and second threshold, is more than first threshold, and institute in the output voltage
Duration of the output voltage more than first threshold is stated more than in the state of second threshold, the monitoring and controlling module exports first
Control signal.
Preferably, the microphone further comprises the amplifier being electrically connected with the capacitor；
The monitoring and controlling module further forms second control signal output according to the output voltage and the threshold value；
The amplifier reduces the output voltage amplification factor to capacitor according to second control signal.
Preferably, the threshold value includes first threshold and second threshold, is more than first threshold, and institute in the output voltage
Duration of the output voltage more than first threshold is stated more than in the state of second threshold, the monitoring and controlling module exports second
Control signal.
Preferably, the microphone further comprises the setting module being connect with monitoring and controlling module, the setting module
Input according to user is received sets monitoring and controlling mould threshold value in the block.
A kind of promotion overload acoustic pressure method based on microphone, including
S1. the output voltage of microphone is monitored, first control signal output is formed with reference to the threshold value of setting；
S2. driving voltage of the pump voltage to capacitor is reduced according to first control signal.
Preferably, the step S1 is specifically included
S1.1. the output voltage of microphone is monitored；
S1.2. given threshold, the threshold value include first threshold and second threshold；
S1.3. it is more than first threshold in the output voltage, and output voltage is more than more than the duration of first threshold
In the state of second threshold, first control signal output is formed.
Preferably, the method further includes
S1. the output voltage of microphone is monitored, first control signal and second control signal are formed with reference to the threshold value of setting
Output；
S2. the driving voltage to capacitor of pumping source is reduced according to first control signal, is dropped according to second control signal
Low amplifier is to the output voltage amplification factor of capacitor.
Preferably, the step S1 is specially
S1.1. the output voltage of microphone is monitored；
S1.2. given threshold, the threshold value include first threshold and second threshold；
S1.3. it is more than first threshold in the output voltage, and output voltage is more than more than the duration of first threshold
In the state of second threshold, first control signal and second control signal output are formed.
Preferably, the threshold value is inputted according to user and is set.
Beneficial effects of the present invention are as follows：
Microphone pickup input encounter the acoustic pressure that changes greatly it is excessively high so as to cause output voltage when, passing through reduces pump electricity
Source to the output voltage amplification factor of capacitor, avoids pickup sound from losing the driving voltage and/or step-down amplifier of capacitor
Very, the acoustic pressure tolerance of microphone products is substantially improved, improves the sound quality of microphone output, while adapts to specific microphone
Usage scenario.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows to promote the microphone structure figure of overload acoustic pressure.
Fig. 2 shows the flow charts of the promotion overload acoustic pressure method based on microphone.
Fig. 3 shows the output voltage schematic diagram that monitoring and controlling module detects.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
In description given below, for purposes of illustration, in order to provide comprehensive reason to one or more embodiment
Solution, numerous specific details are set forth.It may be evident, however, that these realities can also be realized without these specific details
Apply mode.In other examples, one or more embodiment for ease of description, well known structure and equipment are with block diagram
Form show.
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
An embodiment provides a kind of microphone, as shown in Figure 1, the microphone includes capacitor, monitoring
Control module and pumping source can also further include amplifier, can also include setting module.
Monitoring and controlling module monitors the output voltage of microphone, and the is formed according to the output voltage and the threshold value of setting
One control signal output, can also further form second control signal output.
Setting module is connect with monitoring and controlling module, for inputting the threshold by setting monitoring and controlling module according to user
Value, so as to adapt to the demand of different acoustic pressure occasions.Setting module can be plectrum, knob or electronic curtain, only point out here several
Kind representative example.
Threshold value includes first threshold and second threshold, and first threshold is V0 voltages (during corresponding 130dBSPL inputs acoustic pressure
Output voltage), second threshold is the 1S duration.Monitoring and controlling module is more than first threshold, i.e. output voltage in output voltage
More than V0, meanwhile, the duration that first threshold is more than in output voltage is more than second threshold, i.e. the duration is more than the shape of 1S
Under state, the output voltage for judging microphone is high voltage, and microphone local environment is high sound pressure, forms first control signal, into
One step can also form second control signal output.
First control signal is to reduce pumping source to the signal of the driving voltage of capacitor, and second control signal is to reduce
Amplifier is to the signal of the output voltage amplification factor of capacitor.Equally there may also be other to control signal, is carried as long as playing
Microphone overload acoustic pressure effect is risen, two kinds of control signals in the present embodiment are not intended to limit control signal form, here only
Point out several representative examples.
The element of microphone, such as the pumping source in the present embodiment, there are being acted on during first control signal or amplifier,
There are being acted on during second control signal, so as to promote microphone overload acoustic pressure performance, microphone is made to enter high sound pressure protection mould
Formula is not acted in no control signal, so as to restore microphone overload acoustic pressure performance, microphone is made to exit high sound pressure protection mould
Formula.
Pumping source is electrically connected with power supply, capacitor, receives power input, and then to capacitor output drive voltage.The pump
Power supply receives first control signal, and the driving voltage to capacitor is reduced according to first control signal.
Amplifier is electrically connected as output port with ground wire, capacitor.The amplifier receives second control signal, according to
Second control signal reduces the output voltage amplification factor to capacitor.
In the present embodiment, microphone overload acoustic pressure performance is promoted, microphone is made to enter the means packet of high sound pressure protected mode
It includes by reducing driving voltage of the pumping source to capacitor, the output voltage amplification factor to capacitor is reduced by amplifier,
Reduce pumping source by pumping source reduces by amplifier to capacitor the driving voltage to capacitor of capacitor simultaneously
Output voltage amplification factor only points out several representative examples here.Those of ordinary skill in the art, equally can basis
The present invention promotes microphone overload acoustic pressure performance by the effect of other elements.
Reduction amplitude depends on output voltage size.
Capacitor is electrically connected with pumping source and amplifier, by acoustical signal being converted to electric signal, then put by amplifier
It is big to export to loud speaker.
An alternative embodiment of the invention additionally provides a kind of promotion overload acoustic pressure method based on microphone, such as Fig. 3 institutes
Show, including
S1. the output voltage of microphone is monitored, forms first control signal output with reference to threshold value, specially
S1.1. the output voltage of microphone is monitored, as output voltage V1 is raised to V2；
S1.2. given threshold, threshold value include first threshold and second threshold；Wherein, first threshold is voltage value, the second threshold
It is worth for duration value, in the present embodiment, first threshold V0, second threshold is the 1S duration；
S1.3 is more than first threshold in output voltage, and output voltage is more than the duration of first threshold more than the second threshold
In the state of value, first control signal output is formed, if output voltage is more than first threshold, if V1 rises to V2, V2 is more than V0, together
When output voltage be more than first threshold duration be more than second threshold in the state of, if the duration be 2S, held more than 1S
The continuous time forms first control signal output.
First control signal is to reduce pumping source to the signal of the driving voltage of capacitor, and second control signal is to reduce
The signal of amplifier output voltage amplification factor.
S2. it is to reduce driving voltage of the pumping source to capacitor according to first control signal, so as to promote microphone overload
Acoustic pressure performance makes microphone enter high sound pressure protected mode.
If output voltage from V2 is down to V3, V3 is less than V0, is unsatisfactory for step S2 conditions, it is defeated can not to form first control signal
Go out, therefore pumping source does not act on, therefore microphone exits high sound pressure protected mode.
In the present embodiment, microphone overload acoustic pressure performance is promoted, microphone is made to enter the means packet of high sound pressure protected mode
It includes by reducing driving voltage of the pumping source to capacitor, only points out a kind of representative example here.The common skill of fields
Art personnel equally can promote microphone overload acoustic pressure performance according to the present invention by the effect of other elements.
Yet another embodiment of the present invention additionally provides a kind of promotion overload acoustic pressure method based on microphone, such as Fig. 2-figure
Shown in 3, including
S1. the output voltage of microphone is monitored, first control signal and second control signal output, tool are formed with reference to threshold value
Body is
S1.1. the output voltage of microphone is monitored, as output voltage V1 is raised to V2；
S1.2. given threshold, threshold value include first threshold and second threshold；Wherein, first threshold is voltage value, the second threshold
It is worth for duration value, in the present embodiment, first threshold V0, second threshold is the 1S duration；
S1.3 is more than first threshold in output voltage, and output voltage is more than the duration of first threshold more than the second threshold
In the state of value, first control signal and second control signal output are formed, if output voltage is more than first threshold, as V1 rises to
In a state that V2, V2 are more than V0, while output voltage is more than second threshold more than the duration of first threshold, such as the duration
For 2S, more than the 1S duration, first control signal and second control signal output are formed.
First control signal is to reduce pumping source to the signal of the driving voltage of capacitor, and second control signal is to reduce
The signal of amplifier output voltage amplification factor.
S2. according to first control signal and second control signal, pumping source is reduced to the driving voltage of capacitor, is dropped simultaneously
Low amplifier, so as to promote microphone overload acoustic pressure performance, makes microphone to the signal of the output voltage amplification factor of capacitor
Into high sound pressure protected mode.
If output voltage from V2 is down to V3, V3 is less than V0, is unsatisfactory for step S2 conditions, can not be formed first control signal and
Second control signal exports, therefore pumping source and amplifier do not act on, therefore microphone exits high sound pressure protected mode.
In the present embodiment, microphone overload acoustic pressure performance is promoted, microphone is made to enter the means packet of high sound pressure protected mode
It includes by reducing driving voltage of the pumping source to capacitor, by step-down amplifier to the output voltage amplification factor of capacitor,
By reducing output voltage amplification factor of the pumping source to the driving voltage of capacitor while by step-down amplifier to capacitor,
Here several representative examples are only pointed out.Those of ordinary skill in the art equally can pass through other yuan according to the present invention
The effect of part promotes microphone overload acoustic pressure performance.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention for those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the row of protection scope of the present invention.
Claims (10)
1. a kind of microphone, including capacitor, which is characterized in that including
Monitoring and controlling module monitors the output voltage of microphone, and the first control is formed according to the output voltage and the threshold value of setting
Signal output processed；
Pumping source is electrically connected with capacitor, and driving voltage is reduced according to first control signal.
2. a kind of microphone according to claim 1, which is characterized in that the threshold value includes first threshold and the second threshold
Value is more than first threshold, and the output voltage is more than the duration of first threshold more than the second threshold in the output voltage
In the state of value, the monitoring and controlling module exports first control signal.
3. a kind of microphone according to claim 1, which is characterized in that the microphone further comprises and the capacitance
The amplifier of device electrical connection；
The monitoring and controlling module further forms second control signal output according to the output voltage and the threshold value；
The amplifier reduces the output voltage amplification factor to capacitor according to second control signal.
4. a kind of microphone according to claim 3, which is characterized in that the threshold value includes first threshold and the second threshold
Value is more than first threshold, and the output voltage is more than the duration of first threshold more than the second threshold in the output voltage
In the state of value, the monitoring and controlling module exports second control signal.
5. a kind of microphone according to claim 1, which is characterized in that the microphone further comprises and monitoring and controlling
The setting module of module connection, the setting module set monitoring and controlling mould threshold value in the block according to the input for receiving user.
A kind of 6. promotion overload acoustic pressure method based on microphone, which is characterized in that including
S1. the output voltage of microphone is monitored, first control signal output is formed with reference to the threshold value of setting；
S2. driving voltage of the pump voltage to capacitor is reduced according to first control signal.
A kind of 7. promotion overload acoustic pressure method based on microphone according to claim 6, which is characterized in that the step
S1 is specifically included
S1.1. the output voltage of microphone is monitored；
S1.2. given threshold, the threshold value include first threshold and second threshold；
S1.3. it is more than first threshold in the output voltage, and output voltage is more than the duration of first threshold more than second
In the state of threshold value, first control signal output is formed.
A kind of 8. promotion overload acoustic pressure method based on microphone according to claim 6, which is characterized in that the method
Further comprise
S1. the output voltage of microphone is monitored, first control signal and second control signal output are formed with reference to the threshold value of setting；
S2. the driving voltage to capacitor of pumping source is reduced according to first control signal, is put according to second control signal reduction
Big device is to the output voltage amplification factor of capacitor.
A kind of 9. promotion overload acoustic pressure method based on microphone according to claim 8, which is characterized in that the step
S1 is specially
S1.1. the output voltage of microphone is monitored；
S1.2. given threshold, the threshold value include first threshold and second threshold；
S1.3. it is more than first threshold in the output voltage, and output voltage is more than the duration of first threshold more than second
In the state of threshold value, first control signal and second control signal output are formed.
A kind of 10. promotion overload acoustic pressure method based on microphone according to claim 6, which is characterized in that the threshold
Value is inputted according to user and is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446334.1A CN108134974A (en) | 2017-12-27 | 2017-12-27 | A kind of microphone and promotion overload acoustic pressure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446334.1A CN108134974A (en) | 2017-12-27 | 2017-12-27 | A kind of microphone and promotion overload acoustic pressure method |
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| Publication Number | Publication Date |
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| CN108134974A true CN108134974A (en) | 2018-06-08 |
Family
ID=62393448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711446334.1A Pending CN108134974A (en) | 2017-12-27 | 2017-12-27 | A kind of microphone and promotion overload acoustic pressure method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184640A1 (en) * | 2022-04-01 | 2023-10-05 | 瑞声声学科技(深圳)有限公司 | Microphone circuit and microphone module, and method for raising acoustic overload point of microphone |
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| US4475230A (en) * | 1981-08-07 | 1984-10-02 | Rion Kabushiki Kaisha | Hearing aid |
| CN2462619Y (en) * | 2001-01-16 | 2001-11-28 | 黄福远 | intelligent protecting audio amplifier |
| CN201182004Y (en) * | 2008-03-26 | 2009-01-14 | 上海华平信息技术股份有限公司 | Microphone with automatic gain control function |
| US20110142261A1 (en) * | 2009-12-14 | 2011-06-16 | Analog Devices, Inc. | MEMS Microphone with Programmable Sensitivity |
| CN203416381U (en) * | 2013-07-02 | 2014-01-29 | 华平信息技术股份有限公司 | Sensitivity maintenance and adjustment system for microphone |
| CN104853280A (en) * | 2014-02-13 | 2015-08-19 | 北京卓锐微技术有限公司 | Microphone with expandable dynamic range and control method thereof |
-
2017
- 2017-12-27 CN CN201711446334.1A patent/CN108134974A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475230A (en) * | 1981-08-07 | 1984-10-02 | Rion Kabushiki Kaisha | Hearing aid |
| CN2462619Y (en) * | 2001-01-16 | 2001-11-28 | 黄福远 | intelligent protecting audio amplifier |
| CN201182004Y (en) * | 2008-03-26 | 2009-01-14 | 上海华平信息技术股份有限公司 | Microphone with automatic gain control function |
| US20110142261A1 (en) * | 2009-12-14 | 2011-06-16 | Analog Devices, Inc. | MEMS Microphone with Programmable Sensitivity |
| CN203416381U (en) * | 2013-07-02 | 2014-01-29 | 华平信息技术股份有限公司 | Sensitivity maintenance and adjustment system for microphone |
| CN104853280A (en) * | 2014-02-13 | 2015-08-19 | 北京卓锐微技术有限公司 | Microphone with expandable dynamic range and control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184640A1 (en) * | 2022-04-01 | 2023-10-05 | 瑞声声学科技(深圳)有限公司 | Microphone circuit and microphone module, and method for raising acoustic overload point of microphone |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200616 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 Applicant after: Weifang goer Microelectronics Co.,Ltd. Address before: 261031 No. 268 Dongfang Road, Weifang hi tech Development Zone, Shandong, Weifang Applicant before: GOERTEK Inc. |
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Application publication date: 20180608 |