CN205793138U - A kind of Radix Saposhnikoviae is made an uproar mike monomer and earphone - Google Patents
A kind of Radix Saposhnikoviae is made an uproar mike monomer and earphone Download PDFInfo
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- CN205793138U CN205793138U CN201620512776.6U CN201620512776U CN205793138U CN 205793138 U CN205793138 U CN 205793138U CN 201620512776 U CN201620512776 U CN 201620512776U CN 205793138 U CN205793138 U CN 205793138U
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- uproar
- radix saposhnikoviae
- mike
- pass filtering
- filtering circuit
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Abstract
The utility model discloses a kind of Radix Saposhnikoviae to make an uproar mike monomer and earphone, this Radix Saposhnikoviae mike monomer of making an uproar includes microphone body, high-pass filtering circuit, positive terminal and negative terminal, the positive pole of microphone body is connected with the electrode input end of high-pass filtering circuit, the negative pole of microphone body and the negative input of high-pass filtering circuit connect, the cathode output end of high-pass filtering circuit is connected with positive terminal, and the cathode output end of high-pass filtering circuit is connected with negative terminal.Radix Saposhnikoviae of the present utility model mike monomer of making an uproar is provided with high-pass filtering circuit, can filter most low frequency wind and make an uproar, and effectively promotes the effect that mike Radix Saposhnikoviae is made an uproar, and meanwhile, the program is easily achieved, and cost is relatively low.
Description
Technical field
This utility model relates to Radix Saposhnikoviae and makes an uproar field, more specifically, this utility model relates to one is provided with high-pass filtering electricity
The Radix Saposhnikoviae on road is made an uproar mike monomer and earphone.
Background technology
The generation that wind is made an uproar is owing to wind to Headphone structure and Headphone structure occur fricative turbulent flow sound, especially
The wind of the sound hole blowing to earphone outer covering is made an uproar, and such wind is made an uproar and is not only difficult to eliminate by above-mentioned active noise reduction function, on the contrary may be used
Can be lifted, affect noise reduction.
(the art is commonly referred to ECM wheat to use electret condenser microphone in the presence of wind or air blast
Gram wind) time, or when ECM mike is directly impacted in the expiration of talker, ECM mike produces one due to the fluctuation of blast
Plant the puff puff whiff of obvious low frequency impact.This whiff can seriously reduce the quality of acoustical signal.
In prior art, the Radix Saposhnikoviae of MEMS microphone effect of making an uproar is preferable, but MEMS microphone is expensive, adds production
Cost.
Utility model content
A purpose of the present utility model is to provide and a kind of can realize mike monomer and the earphone that Radix Saposhnikoviae is made an uproar.
According to first aspect of the present utility model, it is provided that a kind of Radix Saposhnikoviae is made an uproar mike monomer, including microphone body, height
Bandpass filter circuit, positive terminal and negative terminal, the positive pole of described microphone body is defeated with the positive pole of described high-pass filtering circuit
Entering end to connect, the negative pole of described microphone body and the negative input of described high-pass filtering circuit connect, described high-pass filtering
The cathode output end of circuit is connected with described positive terminal, the cathode output end of described high-pass filtering circuit and described negative terminal
Connect.
Optionally, described high-pass filtering circuit is passive filter circuit, including the first resistance being connected in series and the first electricity
Holding, wherein, described first electric capacity is connected between the positive pole of described microphone body and described positive terminal, described first resistance
It is connected between described positive terminal and described negative terminal.
Optionally, described Radix Saposhnikoviae make an uproar mike monomer also include bias voltage input, described bias voltage input
The positive pole of sub and described microphone body is connected.
Optionally, the sub and described positive terminal of described bias voltage input is connected, and described Radix Saposhnikoviae makes an uproar mike monomer also
Including the second resistance, described second resistance be connected to the sub positive pole with described microphone body of described bias voltage input it
Between.
Optionally, described Radix Saposhnikoviae mike monomer of making an uproar also includes the second electric capacity, and described second capacitances in series is at described positive pole
Between terminal and described negative terminal.
Optionally, described microphone body and described high-pass filtering circuit are encapsulated in a housing, described positive terminal
Sub and described negative terminal is outwards drawn.
According to second aspect of the present utility model, it is provided that a kind of earphone, the mike of described earphone is aforesaid Radix Saposhnikoviae
Make an uproar mike monomer.
Inventor of the present utility model finds, in the prior art, there is existing ECM mike and there is the problem that wind is made an uproar.
And in embodiment of the present utility model, Radix Saposhnikoviae of the present utility model mike monomer of making an uproar is provided with high-pass filtering circuit, permissible
Filtering most low frequency wind to make an uproar, effectively promote the effect that mike Radix Saposhnikoviae is made an uproar, meanwhile, the program is easily achieved, and cost is relatively low.
Therefore, this utility model is to be realized technical assignment or the those skilled in the art of technical problem is that to be solved never think
That arrive or it is not expected that, therefore this utility model is a kind of new technical scheme.
By detailed description to exemplary embodiment of the present utility model referring to the drawings, of the present utility model other
Feature and advantage thereof will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows embodiment of the present utility model, and
And be used for explaining principle of the present utility model together with its explanation.
Fig. 1 is the structural representation of a kind of embodiment of mike monomer of making an uproar according to this utility model Radix Saposhnikoviae；
Fig. 2 is that this utility model Radix Saposhnikoviae is made an uproar mike and existing ECM mike frequency response curve；
Fig. 3 is the circuit theory diagrams of a kind of embodiment according to this utility model high-pass filtering circuit；
Fig. 4 is the electrical block diagram of another embodiment of mike monomer of making an uproar according to this utility model Radix Saposhnikoviae；
Fig. 5 is the circuit theory diagrams of the third embodiment of mike monomer of making an uproar according to this utility model Radix Saposhnikoviae.
Description of reference numerals:
MIC: microphone body；U1: high-pass filtering circuit；
MIC+: positive terminal；MIC-: negative terminal；
The positive pole of p: microphone body；The negative pole of n: microphone body；
The electrode input end of In+: high-pass filtering circuit；
The negative input of In-: high-pass filtering circuit；
The cathode output end of Out+: high-pass filtering circuit；
The cathode output end of Out-: high-pass filtering circuit；
R1, R2: resistance；C1, C2: electric capacity；
V: bias voltage input；The frequency response curve of f1:ECM mike；
F2: this utility model Radix Saposhnikoviae is made an uproar the frequency response curve of mike.
Detailed description of the invention
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should also be noted that it is unless another
Illustrating outward, the parts illustrated the most in these embodiments and positioned opposite, the numerical expression of step and numerical value do not limit
Make scope of the present utility model.
Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
Any restriction that is novel and that apply or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of when, described technology, method and apparatus should be considered a part for description.
It is shown here that any occurrence should be construed as merely exemplary with in all examples discussed, and not
It is as restriction.Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it is further discussed in accompanying drawing subsequently.
This utility model solves existing ECM mike and there is the problem that wind is made an uproar, it is provided that a kind of Radix Saposhnikoviae is made an uproar mike list
Body, as it is shown in figure 1, include microphone body MIC, high-pass filtering circuit U1, positive terminal MIC+ and negative terminal MIC-, Mike
The positive pole p of wind body is connected with the electrode input end In+ of high-pass filtering circuit, and negative pole n is connected with negative input In-, high pass
The cathode output end Out+ of filter circuit is connected with positive terminal MIC+, and cathode output end Out-is connected with negative terminal MIC-,
Wherein, above-mentioned microphone body MIC can but be not limited to ECM mike, generally, the negative input of high-pass filtering circuit
It is connected with cathode output end, is used to ground connection.Wherein, this utility model Radix Saposhnikoviae makes an uproar mike by connecting high-pass filtering circuit
U1, it becomes possible to effectively promoting the effect that Radix Saposhnikoviae is made an uproar, and be easily achieved, cost is relatively low.
Frequency response, also known as bandwidth, refers to the scope of mike sensing frequency of sound wave, and acoustic wave energy is converted to electronics
The ability of signal.
The energy that the wind received due to mike is made an uproar is concentrated mainly on low frequency, and the energy of voice is concentrated mainly on 300Hz-
3000Hz, therefore, Radix Saposhnikoviae make an uproar mike gather voice signal after high-pass filtering circuit Filtering Processing, can make less than 300Hz
The energy attenuation of voice signal, the mike collection human voice signal that so makes an uproar Radix Saposhnikoviae will not produce impact.
In a specific embodiment of the present utility model, make an uproar to Radix Saposhnikoviae mike and existing ECM to this utility model
Mike is tested, and such as the frequency response curve that Fig. 2 is the voice signal that mike receives, its abscissa is voice signal
Frequency, vertical coordinate is the frequency response of voice signal.Wherein, f1 is the frequency response curve of existing ECM mike, and f2 is this reality
Make an uproar with Novel wind-proof the frequency response curve of mike, by figure it is apparent that frequency response curve f1 be one straight
Curve, frequency response curve f2 has a certain degree of drop, and frequency response curve f2 is more bent than frequency response when low frequency 100Hz
The 7dB of line f1 drop, and the frequency of signal is the least, and this utility model Radix Saposhnikoviae is made an uproar the filter effect of high-pass filtering circuit of mike
The best.This shows, this utility model Radix Saposhnikoviae makes an uproar mike can be while not affecting speech signal collection, the energy of low frequency of decaying
Amount, i.e. can not affect while human voice signal gathers, the decay energy made an uproar of wind so that this utility model Radix Saposhnikoviae mike of making an uproar has
Imitate improves the effect that mike Radix Saposhnikoviae is made an uproar.
High-pass filtering circuit U1 can be realized by active high-pass filtering circuit, it is also possible to is realized by passive filter circuit.
Active filter circuit is made up of integrated transporting discharging and electric capacity, resistance, has without advantage, the integrated fortune such as inductance, volume be little, lightweight
Open-loop voltage gain and the input impedance put are the highest, and output resistance is little, also have certain electricity after constituting active filter circuit
Pressure amplifies and buffers effect, but integrated transporting discharging limited bandwidth, so what the operating frequency of current active filter circuit was difficult to do
The highest；Passive filter circuit is made up of passive elements such as electric capacity, reactance and resistance, with to certain subharmonic or its above subharmonic shape
Become low impedance path, to reach to suppress the effect of higher hamonic wave, have that low cost, efficiency is high, a simple in construction and easy to maintenance etc.
Advantage.
Wherein, high-pass filtering circuit can be high-pass filtering chip, it is also possible to be the circuit consisted of simple element.
Therefore, in order to simplify the circuit structure of high-pass filtering circuit, reduce cost so that this programme can be the most real
Existing, in a specific embodiment of the present utility model, high-pass filtering circuit is the passive high-pass filtering circuit of RC, including series connection even
The resistance R1 connect and electric capacity C1, as it is shown on figure 3, wherein, electric capacity C1 is connected to the positive pole p and positive terminal MIC+ of microphone body
Between, resistance R1 is connected between positive terminal MIC+ and negative terminal MIC-.The RC series circuit of this structure has high frequency
The effect of filtering, and structure is the simplest, easily realizes.
Wherein, the frequency of the voice signal that the value of resistance R1 and electric capacity C1 can filter as required determines, this frequency is for setting
Determining frequency, such as, this setpoint frequency can be 300Hz, and so, the frequency speech signal energy less than 300Hz arises that and declines
Subtracting, frequency is the least, decays the most obvious.
If high-pass filtering circuit is active filter circuit, then need the amplifier used according to active filter circuit, to it
Power to ensure that the normal of active filter circuit works.
Due to Radix Saposhnikoviae make an uproar mike need an additional direct current bias voltage be its power supply, can normally work, because of
The positive pole p of this microphone body also needs to receive the biasing voltage signal of direct current, and so, the positive pole p of microphone body can either
Receive the biasing voltage signal of direct current, it is also possible to output Radix Saposhnikoviae is made an uproar the voice signal of exchange that mike gathers.In order to make Radix Saposhnikoviae
Mike of making an uproar can normally work, and this utility model Radix Saposhnikoviae mike monomer of making an uproar also includes the sub-V of bias voltage input, biased electrical
Pressure input terminal V be connected with the positive pole p of microphone body, so, the sub-V of bias voltage input just can be used in connection power supply to
Radix Saposhnikoviae is made an uproar microphone power, it is ensured that Radix Saposhnikoviae is made an uproar while mike normally works, and the low frequency wind filtered in voice signal is made an uproar.
Mike in use, be typically only provided with two terminals, i.e. positive terminal MIC+ and negative terminal MIC-, because of
This, the sub-V of bias voltage input can be connected with positive terminal MIC+, i.e. positive terminal MIC+ can either receive the biasing of direct current
Voltage signal is for making an uproar microphone power to Radix Saposhnikoviae, it is also possible to the voice signal that output processes after filtering, but, bias voltage
After input terminal V is connected with positive terminal MIC+, if positive terminal MIC+ receives d. c. voltage signal, it will cause high pass
The partial circuit short circuit of filter circuit U1 so that high-pass filtering circuit U1 cannot normally work, accordingly, it would be desirable at positive terminal
Connecting a resistance R2 between the positive pole p of MIC+ and microphone body, as shown in Figure 4, this resistance R2 plays the effect of logical direct current,
So so that Radix Saposhnikoviae makes an uproar the power supply of mike and filtering is independent of each other, it is ensured that Radix Saposhnikoviae is made an uproar while mike normally works, no
Affect high-pass filtering circuit U1 to be filtered processing.
But, if the structure that high-pass filtering circuit is similar above-mentioned RC high-pass filtering circuit, output loop only comprises
Resistance class leads to the element of direct current, then, during this utility model Radix Saposhnikoviae makes an uproar mike use, positive terminal MIC+ can access
D. c. voltage signal, negative terminal MIC-meeting ground connection, this will cause positive terminal MIC+ to export d. c. voltage signal, it is impossible to output
The voice signal processed after filtering of exchange so that high-pass filtering circuit U1 cannot realize filter function.In this case,
In order to make Radix Saposhnikoviae mike of making an uproar realize Radix Saposhnikoviae and make an uproar effect, Radix Saposhnikoviae mike of making an uproar need to also include that electric capacity C2, electric capacity C2 are connected on positive pole
Between terminal MIC+ and negative terminal MIC-, as shown in Figure 4.Owing to capacitance versus voltage signal has the work of logical exchange resistance direct current
With, therefore, the biasing voltage signal of direct current can not form loop at the outfan of high-pass filtering circuit so that Radix Saposhnikoviae is made an uproar Mike
Power supply and the filtering of wind are independent of each other.
If the output loop of high-pass filtering circuit exists the element of capacitance kind resistance direct current, then need not in high-pass filtering
Between the earth terminal G and negative terminal MIC-of circuit, electric capacity is set.
In a specific embodiment of the present utility model, this utility model Radix Saposhnikoviae make an uproar mike use above-mentioned RC high pass filter
Wave circuit, what this utility model Radix Saposhnikoviae made an uproar mike can be circuit structure as shown in Figure 5, including resistance R1, R2 and electric capacity
C1, C2, resistance R1 and electric capacity C1 form high-pass filtering circuit, and the sub-V of bias voltage input is connected with positive terminal MIC, resistance
R2 is connected between the sub-V of bias voltage input and the positive pole p of microphone body, i.e. electric capacity C1 and resistance R2 is connected in wheat in parallel
Between the positive pole p and positive terminal MIC of gram wind body；Electric capacity C2 is connected between positive terminal MIC+ and negative terminal MIC-,
I.e. electric capacity C2 and resistance R1 is connected between positive terminal MIC+ and negative terminal MIC-, and so, the voltage signal of direct current passes through
Resistance R2 makes an uproar microphone power to Radix Saposhnikoviae, and resistance C2 plays the effect of logical exchange resistance direct current, and the voltage signal of direct current is in RC high pass
The outfan of filter circuit can not form loop so that Radix Saposhnikoviae makes an uproar the power supply of mike and filtering is independent of each other.
Wherein, this utility model Radix Saposhnikoviae mike of making an uproar can be mutually to set up the circuit structure connected, it is also possible to is one
Packaged device, in a specific embodiment of the present utility model, the assembling of mike of making an uproar for the ease of Radix Saposhnikoviae, mike
Body and high-pass filtering circuit are encapsulated in a housing, and positive terminal and negative terminal are outwards drawn, in order to Radix Saposhnikoviae is made an uproar wheat
Gram wind is set up with other circuit parts during using and is electrically connected with.
This utility model additionally provides a kind of earphone, and the Radix Saposhnikoviae that the mike of this earphone is above-mentioned is made an uproar mike monomer, also
Including earphone cord, headset plug, left otaphone and auris dextra receiver, wherein, earphone cord includes microphone lines, ground wire, L channel line
With R channel line.The make an uproar positive terminal of mike of Radix Saposhnikoviae is connected with microphone lines；Negative terminal is connected with ground wire；Left otaphone
Positive pole is connected with L channel line, and negative pole is connected with ground wire；The positive pole of auris dextra receiver is connected with R channel line, and negative pole is with ground wire even
Connect.
Making an uproar mike monomer owing to this earphone have employed above-mentioned Radix Saposhnikoviae, therefore, user is using this earphone to carry out to converse
During, wind will not be made an uproar and send the electronic equipment of connection to, and then send partner to, improve Consumer's Experience.
The various embodiments described above primary focus describes the difference with other embodiments, but those skilled in the art should be clear
Chu, the various embodiments described above can be used alone as required or be combined with each other.
Although by example, specific embodiments more of the present utility model have been described in detail, but this area
It is to be understood by the skilled artisans that example above is merely to illustrate rather than in order to limit scope of the present utility model.This
Field it is to be understood by the skilled artisans that can be in the case of without departing from scope and spirit of the present utility model, to above example
Modify.Scope of the present utility model is defined by the following claims.
Claims (7)
1. a Radix Saposhnikoviae is made an uproar mike monomer, it is characterised in that include microphone body, high-pass filtering circuit, positive terminal and
Negative terminal, the positive pole of described microphone body is connected with the electrode input end of described high-pass filtering circuit, and described mike is originally
The negative pole of body and the negative input of described high-pass filtering circuit connect, and the cathode output end of described high-pass filtering circuit is with described
Positive terminal connects, and the cathode output end of described high-pass filtering circuit is connected with described negative terminal.
Radix Saposhnikoviae the most according to claim 1 is made an uproar mike monomer, it is characterised in that described high-pass filtering circuit is passive filter
Wave circuit, including the first resistance being connected in series and the first electric capacity, wherein, described first electric capacity is connected to described microphone body
Positive pole and described positive terminal between, described first resistance is connected between described positive terminal and described negative terminal.
Radix Saposhnikoviae the most according to claim 1 and 2 is made an uproar mike monomer, it is characterised in that described Radix Saposhnikoviae is made an uproar mike monomer
Also including bias voltage input, the positive pole of the sub and described microphone body of described bias voltage input is connected.
Radix Saposhnikoviae the most according to claim 3 is made an uproar mike monomer, it is characterised in that described bias voltage input and institute
Stating positive terminal to connect, described Radix Saposhnikoviae mike monomer of making an uproar also includes that the second resistance, described second resistance are connected to described biasing
Between the positive pole of voltage input-terminal and described microphone body.
Radix Saposhnikoviae the most according to claim 4 is made an uproar mike monomer, it is characterised in that described Radix Saposhnikoviae mike monomer of making an uproar also wraps
Including the second electric capacity, described second capacitances in series is between described positive terminal and described negative terminal.
Radix Saposhnikoviae the most according to claim 1 is made an uproar mike monomer, it is characterised in that described microphone body and described high pass
Filter circuit is encapsulated in a housing, and described positive terminal and described negative terminal are outwards drawn.
7. an earphone, it is characterised in that the mike of described earphone is that the Radix Saposhnikoviae according to any one of claim 1-6 is made an uproar wheat
Gram wind monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512776.6U CN205793138U (en) | 2016-05-30 | 2016-05-30 | A kind of Radix Saposhnikoviae is made an uproar mike monomer and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512776.6U CN205793138U (en) | 2016-05-30 | 2016-05-30 | A kind of Radix Saposhnikoviae is made an uproar mike monomer and earphone |
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| Publication Number | Publication Date |
|---|---|
| CN205793138U true CN205793138U (en) | 2016-12-07 |
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| CN201620512776.6U Active CN205793138U (en) | 2016-05-30 | 2016-05-30 | A kind of Radix Saposhnikoviae is made an uproar mike monomer and earphone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979438A (en) * | 2016-05-30 | 2016-09-28 | 歌尔股份有限公司 | Wind noise-prevention microphone single body and earphone |
| CN108401201A (en) * | 2018-05-15 | 2018-08-14 | 歌尔股份有限公司 | A kind of microphone apparatus and the earphone including the microphone apparatus |
| CN109309889A (en) * | 2018-09-30 | 2019-02-05 | 歌尔科技有限公司 | A kind of sound collection equipment and its signal processing method, device, equipment |
-
2016
- 2016-05-30 CN CN201620512776.6U patent/CN205793138U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979438A (en) * | 2016-05-30 | 2016-09-28 | 歌尔股份有限公司 | Wind noise-prevention microphone single body and earphone |
| CN108401201A (en) * | 2018-05-15 | 2018-08-14 | 歌尔股份有限公司 | A kind of microphone apparatus and the earphone including the microphone apparatus |
| CN108401201B (en) * | 2018-05-15 | 2019-12-20 | 歌尔股份有限公司 | Microphone device and earphone comprising same |
| CN109309889A (en) * | 2018-09-30 | 2019-02-05 | 歌尔科技有限公司 | A kind of sound collection equipment and its signal processing method, device, equipment |
| CN109309889B (en) * | 2018-09-30 | 2020-08-11 | 歌尔科技有限公司 | Sound acquisition equipment and signal processing method, device and equipment thereof |
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