CN204244465U - The wireless microphone circuit of a kind of energy change of voice - Google Patents
The wireless microphone circuit of a kind of energy change of voice Download PDFInfo
- Publication number
- CN204244465U CN204244465U CN201420638574.7U CN201420638574U CN204244465U CN 204244465 U CN204244465 U CN 204244465U CN 201420638574 U CN201420638574 U CN 201420638574U CN 204244465 U CN204244465 U CN 204244465U
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- electric capacity
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- integrated circuit
- voice
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- 230000005236 sound signal Effects 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses the wireless microphone circuit of a kind of energy change of voice, comprise power supply, the first switch, second switch, push-button switch, antenna, the first electric capacity to the 9th electric capacity, inductance, amplifier, the first resistance to the 7th resistance, change of voice integrated circuit and Electret condenser microphone, 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, audio signal is after change of voice integrated circuit, again through capacitance three-point type high-frequency generator, finally gone out by antenna transmission.The utility model sound intermediate frequency signal carries out amplifying in change of voice integrated circuit, sample and after A/D conversion, export from the audio signal output end of change of voice integrated circuit, the capacitance three-point type high-frequency generator be made up of amplifier, the 4th electric capacity, inductance L, the first electric capacity, the second electric capacity and the 3rd electric capacity is capacitively coupled to by the 7th, go out finally by antenna transmission, this wireless microphone circuit have power consumption low, manufacture craft difficulty is low and the feature of working stability.
Description
Technical field
The utility model relates to a kind of wireless microphone circuit, particularly relates 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.
Utility model content
The purpose of this utility model 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, the utility model have employed 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.
The beneficial effects of the utility model are:
The utility model 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 utility model change of voice.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the wireless microphone circuit of a kind of energy of the utility model 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 utility model 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 |
|---|---|---|---|
| CN201420638574.7U CN204244465U (en) | 2014-10-30 | 2014-10-30 | The wireless microphone circuit of a kind of energy change of voice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638574.7U CN204244465U (en) | 2014-10-30 | 2014-10-30 | The wireless microphone circuit of a kind of energy change of voice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204244465U true CN204244465U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420638574.7U Expired - Fee Related CN204244465U (en) | 2014-10-30 | 2014-10-30 | The wireless microphone circuit of a kind of energy change of voice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204244465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320739A (en) * | 2014-10-30 | 2015-01-28 | 云晖软件(成都)有限公司 | Wireless microphone circuit capable of changing voices |
-
2014
- 2014-10-30 CN CN201420638574.7U patent/CN204244465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320739A (en) * | 2014-10-30 | 2015-01-28 | 云晖软件(成都)有限公司 | Wireless microphone circuit capable of changing voices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |