CN104320739A - Wireless microphone circuit capable of changing voices - Google Patents
Wireless microphone circuit capable of changing voices Download PDFInfo
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- CN104320739A CN104320739A CN201410597268.8A CN201410597268A CN104320739A CN 104320739 A CN104320739 A CN 104320739A CN 201410597268 A CN201410597268 A CN 201410597268A CN 104320739 A CN104320739 A CN 104320739A
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Abstract
The invention discloses a wireless microphone circuit capable of changing voices. The wireless microphone circuit comprises a power source, a first switch, a second switch, a button switch, an antenna, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, an inductor, an amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a voice changing integrated circuit and an electret microphone. A three-point capacitance high frequency oscillator is formed by the amplifier, the fourth capacitor, the inductor L, the first capacitor, the second capacitor and the third capacitor, audio signals pass through the voice changing integrated circuit and then pass through the three-point capacitance high frequency oscillator, and finally the audio signals are emitted out through the antenna. After amplification, sampling and A/D conversion are carried out on audio signals in the voice changing integrated circuit, the audio signals are output of the audio signal output end of the voice changing integrated circuit, the audio signals are coupled to the three-point capacitance high frequency oscillator formed by the amplifier, the fourth capacitor, the inductor L, the first capacitor, the second capacitor and the third capacitor through the seventh capacitor, finally, the audio signals are emitted out through the antenna, and the wireless microphone circuit has the advantages of being low in energy consumption, low in manufacturing process difficulty and stable in work.
Description
Technical field
The present invention relates to a kind of wireless microphone circuit, particularly relate to the wireless microphone circuit of a kind of energy change of voice.
Background technology
Wireless microphone is, by Electret condenser microphone, voice signal is become audio electrical signal, the high-frequency signal that audio signal can go modulating oscillator to produce, finally, signal after modulation by antenna transmission to aerial, wireless microphone is sung user, speech or performance time can any rotation of 360 degree and movement, unrestricted, the wireless microphone circuit of the change of voice is the sound exporting child's voice, male voice, female voice and the old by microphone, and tradition the wireless microphone circuit of the change of voice can exist that power consumption is high, manufacture craft difficulty is high and the problem of job insecurity.
Summary of the invention
Object of the present invention is just the wireless microphone circuit providing the change of voice of a kind of energy in order to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
A wireless microphone circuit for the energy change of voice, comprises power supply, first switch, second switch, push-button switch, antenna, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, inductance, amplifier, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, change of voice integrated circuit and Electret condenser microphone, the positive pole of described power supply is connected with the first end of described first switch, the negative pole of described power supply respectively with the first end of described second electric capacity, the first end of described 3rd electric capacity, the negative electricity source of described amplifier, the first end of described 5th electric capacity, the first end of described second switch, the first end of described push-button switch, the first end of described first resistance, the first end of described 8th electric capacity, the first end of described 7th resistance is connected with the first end of described Electret condenser microphone, the second end of described first switch respectively with the cathode power supply end of described amplifier, second end of described 5th electric capacity is connected with the first end of described 3rd resistance, the second end of described 3rd resistance respectively with the positive power source terminal of described change of voice integrated circuit, the first end of described 4th resistance, the first end of described 5th resistance is connected with the first end of described 6th resistance, second end of described second electric capacity is connected with the first end of described first electric capacity and the output of described amplifier respectively, second end of described first electric capacity is connected with the signal transmitting terminal of described antenna, second end of described 3rd electric capacity is connected with the first end of described inductance, second end of described inductance is connected with the first end of described 4th electric capacity, second end of described 4th electric capacity is connected with the input of described amplifier and the first end of described 7th electric capacity respectively, second end of described first resistance is connected with the first end of described 6th electric capacity, second end of described 6th electric capacity is connected with the first end of described second resistance and the first write circuit of described change of voice integrated circuit respectively, the changing voice to hold of second end of described second switch and described change of voice integrated circuit is connected, second end of described push-button switch is connected with the external button end of described change of voice integrated circuit, second end of described second resistance is connected with the second write circuit of described change of voice integrated circuit, second end of described 7th electric capacity is connected with the audio signal output end of described change of voice integrated circuit, the earth terminal of described change of voice integrated circuit is connected with the second end of described 4th resistance and the second end of described 8th electric capacity respectively, the audio input end of described change of voice integrated circuit and the first end of described 9th electric capacity, second end of described 5th resistance is connected with the second end of described 7th resistance, and the second end of described 9th electric capacity is connected with described second end of the 6th resistance and the second end of described Electret condenser microphone respectively.
In said structure, Electret condenser microphone sends into the audio input end of change of voice integrated circuit for converting tones into audio signal, change of voice integrated circuit is with too audio signal being carried out amplifying, sampling and A/D conversion, the capacitance three-point type high-frequency generator of amplifier, the 4th electric capacity, inductance L, the first electric capacity, the second electric capacity and the 3rd electric capacity composition, this wireless microphone circuit is had, and power consumption is low, manufacture craft difficulty is low and the feature of working stability.
Beneficial effect of the present invention is:
The present invention is the wireless microphone circuit of a kind of energy change of voice, in this wireless microphone circuit, Electret condenser microphone converts tones into the audio input end that audio signal sends into change of voice integrated circuit, amplify in change of voice integrated circuit, after sampling and A/D change, export from the audio signal output end of change of voice integrated circuit, be capacitively coupled to by amplifier by the 7th, 4th electric capacity, inductance L, first electric capacity, the capacitance three-point type high-frequency generator of the second electric capacity and the 3rd electric capacity composition, change of voice frequency-modulated wave is gone out finally by antenna transmission, it is low that this wireless microphone circuit has power consumption, the feature of the low and working stability of manufacture craft difficulty.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the wireless microphone circuit of a kind of energy of the present invention change of voice.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the wireless microphone circuit of a kind of energy of the present invention change of voice, comprises power supply E, first switch S 1, second switch S2, push-button switch SP, antenna Y, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, inductance L, amplifier IC1, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, change of voice integrated circuit (IC) 2 and Electret condenser microphone MIC, the positive pole of power supply E is connected with the first end of the first switch S 1, the negative pole of power supply E respectively with the first end of the second electric capacity C2, the first end of the 3rd electric capacity C3, the negative electricity source of amplifier IC1, the first end of the 5th electric capacity C5, the first end of second switch S2, the first end of push-button switch SP, the first end of the first resistance R1, the first end of the 8th electric capacity C8, the first end of the 7th resistance R7 is connected with the first end of Electret condenser microphone MIC, the second end of the first switch S 1 respectively with the cathode power supply end of amplifier IC1, second end of the 5th electric capacity C5 is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 respectively with the positive power source terminal of change of voice integrated circuit (IC) 2, the first end of the 4th resistance R4, the first end of the 5th resistance R5 is connected with the first end of the 6th resistance R6, second end of the second electric capacity C2 is connected with the first end of the first electric capacity C1 and the output of amplifier IC1 respectively, second end of the first electric capacity C1 is connected with the signal transmitting terminal of antenna Y, second end of the 3rd electric capacity C3 is connected with the first end of inductance L, second end of inductance L is connected with the first end of the 4th electric capacity C4, second end of the 4th electric capacity C4 is connected with the input of amplifier IC1 and the first end of the 7th electric capacity C7 respectively, second end of the first resistance R1 is connected with the first end of the 6th electric capacity C6, second end of the 6th electric capacity C6 is connected with the first end of the second resistance R2 and the first write circuit of change of voice integrated circuit (IC) 2 respectively, the changing voice to hold of second end of second switch S2 and change of voice integrated circuit (IC) 2 is connected, second end of push-button switch SP is connected with the external button end of change of voice integrated circuit (IC) 2, second end of the second resistance R2 is connected with the second write circuit of change of voice integrated circuit (IC) 2, second end of the 7th electric capacity C7 is connected with the audio signal output end of change of voice integrated circuit (IC) 2, the earth terminal of change of voice integrated circuit (IC) 2 is connected with second end of the 4th resistance R4 and second end of the 8th electric capacity C8 respectively, the audio input end of change of voice integrated circuit (IC) 2 and the first end of the 9th electric capacity C9, second end of the 5th resistance R5 is connected with second end of the 7th resistance R7, and second end of the 9th electric capacity C9 is connected with second end of the 6th resistance R6 and second end of Electret condenser microphone MIC respectively.
Operation principle of the present invention is as follows:
Electret condenser microphone MIC converts tones into the audio input end that audio signal sends into change of voice integrated circuit (IC) 2, carry out amplifying in change of voice integrated circuit (IC) 2, to sample and after A/D conversion, export from the audio signal output end of change of voice integrated circuit (IC) 2, be coupled to the capacitance three-point type high-frequency generator be made up of amplifier IC1, the 4th electric capacity C4, inductance L, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3 by the 7th electric capacity C7, go out change of voice frequency-modulated wave finally by antenna transmission.
Claims (1)
1. a wireless microphone circuit for the energy change of voice, is characterized in that: comprise power supply, first switch, second switch, push-button switch, antenna, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, inductance, amplifier, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, change of voice integrated circuit and Electret condenser microphone, the positive pole of described power supply is connected with the first end of described first switch, the negative pole of described power supply respectively with the first end of described second electric capacity, the first end of described 3rd electric capacity, the negative electricity source of described amplifier, the first end of described 5th electric capacity, the first end of described second switch, the first end of described push-button switch, the first end of described first resistance, the first end of described 8th electric capacity, the first end of described 7th resistance is connected with the first end of described Electret condenser microphone, the second end of described first switch respectively with the cathode power supply end of described amplifier, second end of described 5th electric capacity is connected with the first end of described 3rd resistance, the second end of described 3rd resistance respectively with the positive power source terminal of described change of voice integrated circuit, the first end of described 4th resistance, the first end of described 5th resistance is connected with the first end of described 6th resistance, second end of described second electric capacity is connected with the first end of described first electric capacity and the output of described amplifier respectively, second end of described first electric capacity is connected with the signal transmitting terminal of described antenna, second end of described 3rd electric capacity is connected with the first end of described inductance, second end of described inductance is connected with the first end of described 4th electric capacity, second end of described 4th electric capacity is connected with the input of described amplifier and the first end of described 7th electric capacity respectively, second end of described first resistance is connected with the first end of described 6th electric capacity, second end of described 6th electric capacity is connected with the first end of described second resistance and the first write circuit of described change of voice integrated circuit respectively, the changing voice to hold of second end of described second switch and described change of voice integrated circuit is connected, second end of described push-button switch is connected with the external button end of described change of voice integrated circuit, second end of described second resistance is connected with the second write circuit of described change of voice integrated circuit, second end of described 7th electric capacity is connected with the audio signal output end of described change of voice integrated circuit, the earth terminal of described change of voice integrated circuit is connected with the second end of described 4th resistance and the second end of described 8th electric capacity respectively, the audio input end of described change of voice integrated circuit and the first end of described 9th electric capacity, second end of described 5th resistance is connected with the second end of described 7th resistance, and the second end of described 9th electric capacity is connected with described second end of the 6th resistance and the second end of described Electret condenser microphone respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597268.8A CN104320739A (en) | 2014-10-30 | 2014-10-30 | Wireless microphone circuit capable of changing voices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597268.8A CN104320739A (en) | 2014-10-30 | 2014-10-30 | Wireless microphone circuit capable of changing voices |
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| Publication Number | Publication Date |
|---|---|
| CN104320739A true CN104320739A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410597268.8A Pending CN104320739A (en) | 2014-10-30 | 2014-10-30 | Wireless microphone circuit capable of changing voices |
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| CN (1) | CN104320739A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2556201Y (en) * | 2002-07-12 | 2003-06-18 | 徐文兵 | Story machine |
| CN2829236Y (en) * | 2005-09-06 | 2006-10-18 | 仇成全 | Protection robot GSM communication control circuit |
| US20100263519A1 (en) * | 2009-04-16 | 2010-10-21 | Hon Hai Precision Industry Co., Ltd. | Set top box |
| CN102497607A (en) * | 2011-12-20 | 2012-06-13 | 洪珍 | Discrete component type frequency modulated wireless microphone |
| CN103473836A (en) * | 2013-08-30 | 2013-12-25 | 福建星网视易信息系统有限公司 | Safety-orientated indoor machine with voice modulating function and intelligent building intercom system thereof |
| CN204244465U (en) * | 2014-10-30 | 2015-04-01 | 云晖软件(成都)有限公司 | The wireless microphone circuit of a kind of energy change of voice |
-
2014
- 2014-10-30 CN CN201410597268.8A patent/CN104320739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2556201Y (en) * | 2002-07-12 | 2003-06-18 | 徐文兵 | Story machine |
| CN2829236Y (en) * | 2005-09-06 | 2006-10-18 | 仇成全 | Protection robot GSM communication control circuit |
| US20100263519A1 (en) * | 2009-04-16 | 2010-10-21 | Hon Hai Precision Industry Co., Ltd. | Set top box |
| CN102497607A (en) * | 2011-12-20 | 2012-06-13 | 洪珍 | Discrete component type frequency modulated wireless microphone |
| CN103473836A (en) * | 2013-08-30 | 2013-12-25 | 福建星网视易信息系统有限公司 | Safety-orientated indoor machine with voice modulating function and intelligent building intercom system thereof |
| CN204244465U (en) * | 2014-10-30 | 2015-04-01 | 云晖软件(成都)有限公司 | The wireless microphone circuit of a kind of energy change of voice |
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Application publication date: 20150128 |
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