CN105939503B - Multi-mode microphone - Google Patents
Multi-mode microphone Download PDFInfo
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- CN105939503B CN105939503B CN201610405854.7A CN201610405854A CN105939503B CN 105939503 B CN105939503 B CN 105939503B CN 201610405854 A CN201610405854 A CN 201610405854A CN 105939503 B CN105939503 B CN 105939503B
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- 230000004044 response Effects 0.000 claims abstract description 48
- 230000005236 sound signal Effects 0.000 claims abstract description 22
- 230000035945 sensitivity Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention relates to microphones, and more particularly to a multimode microphone. According to the invention, the sound signals collected in the sensing environment of the sound sensor are sensed, and the adjusting module outputs an adjusting signal which can adjust and determine the sensitivity and the frequency response range of the collected sound signals, so that the sound output by the microphone can be better adapted to the sensing environment.
Description
Technical Field
The present invention relates to microphones, and more particularly to a multimode microphone.
Background
Because the environments of the microphone for receiving sound are different, the requirements for the sound gain and the frequency response range are different, the existing microphone is mainly used for adjusting the power consumption through clock signals according to different environments, but the clock signals cannot adapt to the change of the environments in real time, and the receiving effect of a user on the sound of the microphone is poor.
Disclosure of Invention
In view of the problems of the prior art, a multi-mode microphone is now provided.
The specific technical scheme is as follows:
a multimode microphone, comprising:
the sound sensor is used for collecting and outputting sound signals;
the adjusting circuit is connected with the sound sensor and is used for outputting an adjusting signal according to the sound signal;
the amplifying circuit is respectively connected with the sound sensor and the regulating circuit and is used for amplifying the sound signal according to the regulating signal and outputting an amplified signal;
the frequency response analyzer is respectively connected with the amplifying circuit and the adjusting circuit, is used for receiving the amplifying signal, and is used for adjusting the frequency response range of the amplifying signal according to the adjusting signal and outputting an analog signal.
Preferably, also comprises
And the conversion circuit is connected with the frequency response analyzer and used for receiving and converting the analog signals.
Preferably, the conversion circuit is an analog-to-digital conversion circuit.
Preferably, the amplifying circuit includes an operational amplifier.
Preferably, the frequency response analyzer is integrated in an equalizer.
Preferably, the frequency response analyzer is integrated in a filter.
Preferably, the frequency response range of the frequency response analyzer is 200Hz-2.5KHz.
Preferably, the frequency response range of the frequency response analyzer is 200Hz-7.5KHz.
Preferably, the sensitivity of the amplified signal is-22 dBus to-18 dBus.
Preferably, the sensitivity of the amplified signal is-36 dBFS.
The beneficial effects of the technical scheme are as follows:
above-mentioned technical scheme can be through responding to the sound signal that gathers in the sensing environment of sound sensor, exports a regulating signal by a regulating module, and this regulating signal can adjust, confirm the sensitivity and the frequency response scope of the sound signal of gathering to the sound that makes microphone output can be better adaptation sensing environment.
Drawings
Fig. 1-2 are schematic diagrams of an embodiment of a multimode microphone according to the present invention.
Detailed Description
It should be noted that, under the condition of no conflict, the following technical schemes and technical features can be mutually combined.
The following describes the embodiments of the present invention further with reference to the accompanying drawings:
the present embodiment provides a multimode microphone, as shown in fig. 1, including:
the sound sensor is used for collecting and outputting sound signals;
the adjusting circuit is connected with the sound sensor and is used for outputting an adjusting signal according to the sound signal;
the amplifying circuit is respectively connected with the sound sensor and the regulating circuit and is used for amplifying the sound signal according to the regulating signal and outputting an amplified signal;
the frequency response analyzer is respectively connected with the amplifying circuit and the adjusting circuit, is used for receiving the amplifying signal, and is used for adjusting the frequency response range of the amplifying signal according to the adjusting signal and outputting an analog signal.
In this embodiment, the adjusting module can output an adjusting signal according to the sound signal in real time, that is, adjust the sound signal in real time, adjust the amplification factor of the sound signal, that is, adjust the gain of the sound, so that the sensitivity of the sound signal can adapt to the change of the sensing environment, and in addition, the frequency response range can be adjusted according to the adjusting signal, so that different power consumption is output for different sensing environments, and the multi-mode of the microphone is realized.
The frequency response analyzer in this embodiment may use the existing method for adjusting the frequency response range, and any technical scheme that can achieve adjustment of the frequency response may be applied to this embodiment.
The frequency response refers to a phenomenon that when an audio signal output at a constant voltage is connected with a system, sound pressure generated by a sound box increases or decays along with the change of frequency, and the phase changes along with the change of frequency, and the related change relation between the sound pressure and the phase and the frequency is called frequency response. Also referred to as the frequency range within which the sound system can reproduce within the range allowed by the amplitude, and the amount of change in the signal within this range is referred to as the frequency response, also referred to as the frequency characteristic. The ratio of the maximum to minimum of the output voltage amplitude is expressed in decibels (dB) over the nominal frequency range. The frequency response generally refers to the change in impedance of a system or a metering sensor with frequency in the power quality concept.
Steady state response characteristics of the system to sinusoidal signals. Steady state is the state of the motion of the system after the end of the transient process. The frequency response of the system consists of amplitude-frequency characteristics and phase-frequency characteristics. The amplitude-frequency characteristic represents the relation between the increase and decrease of the gain and the signal frequency; the phase frequency characteristics represent the phase distortion relationship at different signal frequencies. The ability of the system to reproduce the signal and the characteristics of the filtered noise can be evaluated relatively intuitively from the frequency response. In control theory, stability and other motion characteristics of the system can be analyzed relatively conveniently based on the frequency response. The concept of frequency response is also important in system design. The introduction of a correction means of a suitable form allows the characteristics of the frequency response to be adjusted, resulting in improved performance of the system. The analysis and design method based on the frequency response is called a frequency response method.
In a preferred embodiment of the present invention, as shown in FIG. 2, the present invention further comprises
And the conversion circuit is connected with the frequency response analyzer and used for receiving and converting the analog signals.
In a preferred embodiment of the present invention, the conversion circuit is an analog-to-digital conversion circuit.
In a preferred embodiment of the present invention, the amplifying circuit includes an operational amplifier.
In a preferred embodiment of the invention, the frequency response analyzer is integrated in an equalizer.
In a preferred embodiment of the invention, the frequency response analyzer is integrated in a filter.
In a preferred embodiment of the invention, the frequency response of the frequency response analyzer is adjusted to a frequency range of 200Hz-2.5KHz.
In a preferred embodiment of the invention, the frequency response of the frequency response analyzer is adjusted to a frequency range of 200Hz-7.5KHz.
In a preferred embodiment of the present invention, the sensitivity of the amplified signal is-22 dBus to-18 dBus.
In a preferred embodiment of the invention, the sensitivity of the amplified signal is-36 dBus.
In the above embodiment, for example, if the microphone is in a relatively quiet environment, the sensitivity and the frequency response range of the sound signal can be adaptively adjusted according to the quiet environment, for example, the gain of the sound signal can be reduced, so as to reduce the power consumption of the microphone, and then the analog signal is converted into the digital signal to be output.
In summary, the above technical scheme can be through responding to the sound signal that gathers in the sensing environment of sound sensor, export an adjusting signal by an adjusting module, and this adjusting signal can adjust, confirm the sensitivity and the frequency response scope of gathering the sound signal to the sound that makes microphone output can better adaptation sensing environment.
By way of illustration and the accompanying drawings, there is shown exemplary examples of specific structures of the embodiments and other variations may be made based on the spirit of the invention. While the above invention is directed to the presently preferred embodiments, such disclosure is not intended to be limiting.
Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalents and alternatives falling within the scope of the claims are intended to be embraced therein.
Claims (9)
1. A multimode microphone, comprising:
the sound sensor is used for collecting and outputting sound signals;
the adjusting circuit is connected with the sound sensor and is used for outputting an adjusting signal according to the sound signal;
the amplifying circuit is respectively connected with the sound sensor and the regulating circuit and is used for amplifying the sound signal according to the regulating signal and outputting an amplified signal;
the frequency response analyzer is respectively connected with the amplifying circuit and the adjusting circuit, and is used for receiving the amplifying signal, adjusting the frequency response range of the amplifying signal according to the adjusting signal and outputting an analog signal;
and the conversion circuit is connected with the frequency response analyzer and used for receiving and converting the analog signals.
2. A multimode microphone as recited in claim 1, wherein the conversion circuit is an analog-to-digital conversion circuit.
3. The multimode microphone of claim 1, wherein the amplification circuit comprises an operational amplifier.
4. The multimode microphone of claim 1, wherein the frequency response analyzer is integrated into an equalizer.
5. The multimode microphone of claim 1, wherein the frequency response analyzer is integrated into a filter.
6. A multimode microphone according to claim 1, wherein the frequency response analyzer adjusts the frequency response in the range of 200Hz-2.5KHz.
7. A multimode microphone according to claim 1, wherein the frequency response analyzer adjusts the frequency response in the range of 200Hz-7.5KHz.
8. The multimode microphone of claim 1, wherein the amplified signal has a sensitivity of-22 dBFS to-18 dBFS.
9. The multimode microphone of claim 1, wherein the amplified signal has a sensitivity of-36 dBFS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405854.7A CN105939503B (en) | 2016-06-08 | 2016-06-08 | Multi-mode microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405854.7A CN105939503B (en) | 2016-06-08 | 2016-06-08 | Multi-mode microphone |
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| Publication Number | Publication Date |
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| CN105939503A CN105939503A (en) | 2016-09-14 |
| CN105939503B true CN105939503B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610405854.7A Active CN105939503B (en) | 2016-06-08 | 2016-06-08 | Multi-mode microphone |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109246523B (en) * | 2018-08-02 | 2020-11-06 | 美律电子(深圳)有限公司 | Earphone set |
Citations (6)
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|---|---|---|---|---|
| CN201805538U (en) * | 2010-09-10 | 2011-04-20 | 康佳集团股份有限公司 | Circuit for improving play sound articulation according to ambient sound, and device thereof |
| JP2014086847A (en) * | 2012-10-23 | 2014-05-12 | Toshiba Corp | Acoustic processing device, electronic apparatus, and acoustic processing method |
| CN103873625A (en) * | 2014-03-31 | 2014-06-18 | 深圳市中兴移动通信有限公司 | Method and device for increasing volume of received voice and mobile terminal |
| CN104780259A (en) * | 2014-01-14 | 2015-07-15 | 深圳富泰宏精密工业有限公司 | Automatic adjustment system and method for call voice quality |
| CN205123952U (en) * | 2015-10-23 | 2016-03-30 | 钰太芯微电子科技（上海）有限公司 | Regulating circuit and microphone based on microphone |
| CN205883501U (en) * | 2016-06-08 | 2017-01-11 | 钰太芯微电子科技（上海）有限公司 | Multi -mode microphone |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM373617U (en) * | 2009-10-02 | 2010-02-01 | Mascot Electric Co Ltd | Waistband type wireless microphone transmitter unit |
| US20150281834A1 (en) * | 2014-03-28 | 2015-10-01 | Funai Electric Co., Ltd. | Microphone device and microphone unit |
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2016
- 2016-06-08 CN CN201610405854.7A patent/CN105939503B/en active Active
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| CN201805538U (en) * | 2010-09-10 | 2011-04-20 | 康佳集团股份有限公司 | Circuit for improving play sound articulation according to ambient sound, and device thereof |
| JP2014086847A (en) * | 2012-10-23 | 2014-05-12 | Toshiba Corp | Acoustic processing device, electronic apparatus, and acoustic processing method |
| CN104780259A (en) * | 2014-01-14 | 2015-07-15 | 深圳富泰宏精密工业有限公司 | Automatic adjustment system and method for call voice quality |
| CN103873625A (en) * | 2014-03-31 | 2014-06-18 | 深圳市中兴移动通信有限公司 | Method and device for increasing volume of received voice and mobile terminal |
| CN205123952U (en) * | 2015-10-23 | 2016-03-30 | 钰太芯微电子科技（上海）有限公司 | Regulating circuit and microphone based on microphone |
| CN205883501U (en) * | 2016-06-08 | 2017-01-11 | 钰太芯微电子科技（上海）有限公司 | Multi -mode microphone |
Non-Patent Citations (1)
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| 微腔光声探测技术及其成像方法;蔡秋霞;《光学学报》;全文 * |
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| CN105939503A (en) | 2016-09-14 |
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