CN2322343Y - Microphone capable of circulation recording/playing - Google Patents
Microphone capable of circulation recording/playing Download PDFInfo
- Publication number
- CN2322343Y CN2322343Y CN 98202817 CN98202817U CN2322343Y CN 2322343 Y CN2322343 Y CN 2322343Y CN 98202817 CN98202817 CN 98202817 CN 98202817 U CN98202817 U CN 98202817U CN 2322343 Y CN2322343 Y CN 2322343Y
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- CN
- China
- Prior art keywords
- microphone
- recording
- capacitor
- playback
- plug
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- Expired - Fee Related
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Abstract
The utility model relates to a microphone capable of circulation recording/playing. The output end of a microphone MICI is split into two paths. One path is coupled in the base of a triode BG through a capacitor C < 4 > to amplify, and the other path is coupled in the MIC end of a speech storage recording/playing chip. The collector of the triode BG is a signal output end and is coupled in a plug CA through the coupling of a capacitor C < 5 > and the separate pressing of a variable resistor W < 1 >. The VCC end of the speech recording/playing chip is the input end of a positive power supply, a GND end is connected with the ground, and an REC end and a PLAY end are respectively the recording/playing triggering end. An SPKN end is an audio frequency output end and is coupled in the plug CA through the coupling of a capacitor C < 3 > and the separate pressing of a variable resistor W < 2 >. Adopting the microphone of the utility model to replace the microphone in the prior art, the existing loudspeaker device and the existing sounder device can increase the repeated recording/playing function.
Description
The utility model relates to a kind of recording playback sound microphone capable of circulation.
All public address equipments all be unable to do without sound loader-microphone.Microphone of the prior art has only function of sound input, when needs repeat to broadcast same information, can only face toward microphone by the announcer and repeat for one time one everywhere.Chinese patent ZL92212526.0 discloses a kind of " computer cyclic megaphone ", and language chip is combined with loud speaker, realizes the circulating copy-backing discharge function.But this technology has its limitation, can only bring into play in the public address equipment that the repetitive cycling language chip is housed, and can not make the existing public address equipment in the great majority use increase the circulating copy-backing discharge function.
The purpose of this utility model provides a kind of recording playback sound microphone capable of circulation, only needs to substitute microphone of the prior art with this microphone, just can make existingly amplify, stereo set increase repetition recording/playing function.
The purpose of this utility model realizes by following measure.
A kind of recording playback sound microphone capable of circulation has microphone MIC1, and the output of microphone MIC1 is divided into two-way, leads up to capacitor C
4Insert the base stage of triode BG and amplify, the MIC end of language storage recording and playback ic (HFC-L20-300) is inserted on another road; The current collection of triode BG is signal output part very, through capacitor C
5Coupling, variable resistor W
1Dividing potential drop inserts plug CA; The VCC end of language storage recording and playback ic is the positive supply input, and GND hold ground connection, and REC end and PLAY hold respectively through current-limiting resistance R
1, R
2When joining, through K switch with power supply E positive pole
2, K
3Ground connection, SPKN holds through capacitor C
3Coupling, variable resistor W
2Insert plug CA after the dividing potential drop.
Plug CA can be substituted with the receiver J that has plug CAO by the wireless launcher F of complete preparation.
The SPKN termination of language storage recording and playback ic has minitype acoustic generator RL.So that monitor its recording playback effect.
The LED termination of language storage recording and playback ic has luminous tube LED1, and luminous tube LED1 is luminous during recording, and record is full promptly extinguishes, with the prompting user.
Power supply E positive pole is connected to the frequency bypass capacitor C respectively
1, high-frequency bypass capacitor C
2
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Fig. 1 is the circuit diagram of the utility model recording playback sound capable of circulation microphone.
Fig. 2 has line style recording playback sound capable of circulation microphone shape assumption diagram for the utility model.
Fig. 3 is the utility model radio-type recording playback sound capable of circulation microphone shape assumption diagram.
Referring to accompanying drawing, the output of Electret condenser microphone MIC1 is divided into two-way: lead up to capacitor C
4Insert the base stage of triode BG and amplify, the MIC end of language storage recording and playback ic HFC-L20-300 is inserted on another road.Amplifying signal is by the collector electrode output of triode BG, through capacitor C
5Coupling, variable resistor W
1Divide to extrude audio signal, insert plug CA.The collector electrode of triode BG is through load resistance R
4Join with power supply E positive pole, grounded emitter is connected to biasing resistor R between base stage and the collector electrode
3The VCC end of language storage recording and playback ic HFC-L20-300 joins with the positive pole of power supply E, and GND holds ground connection.The REC end is that the recording trigger end is through current-limiting resistance R
1Join for it provides high potential with power supply E positive pole, control triggers, and simultaneously, often opens contact switch K
2Ground connection.Press K switch
2, the REC end can trigger because of obtaining electronegative potential.Equally, playback trigger end PLAY end is through current-limiting resistance R
2Join with power supply E positive pole, for it provides high potential, control triggers, and simultaneously, often opens contact switch K
3Ground connection.Press K switch
3, the PLAY end triggers because of obtaining electronegative potential.The output of audio output SPKN is through capacitor C
3Coupling, variable resistor W
2Divide to extrude audio signal, insert plug CA.The SPKN end also is connected to minitype acoustic generator RL.The LED termination has luminous tube LED1.Power supply E positive pole is connected to master switch K
1, the frequency bypass capacitor C
1With high-frequency bypass capacitor C
2
Plug CA can be substituted with the receiver J that has plug CAO by the wireless launcher F of complete preparation, and the positive E utmost point of the anode of reflector F and power supply E joins, negativing ending grounding, signal input part and variable resistor W
1, W
2Output join.T
1, T
2Be respectively the antenna of reflector F and receiver J.
The utility model circuit structure is implanted in the housing of common microphone, can obtain with prior art in the basic the same recording playback sound microphone capable of circulation of common cable microphone or wireless microphone profile, see Fig. 1, Fig. 2.During use, plug CA (or CAO) inserted amplify or the MIC socket of other stereo set.Turn on the power switch K
1Microphone is promptly started working.Sound is by Electret condenser microphone MIC1 input the becoming signal of telecommunication, and it is exported one tunnel access triode BG and amplifies the MIC end of another road access language storage recording and playback ic.As this moment not according to following K switch
2, then the utility model microphone just is equivalent to microphone of the prior art, and the signal after triode BG amplifies is through variable resistor W
1After dividing the extrusion audio signal, broadcast after directly amplifying by public address equipment.As pressing K switch this moment
2, then the REC of chip end is triggered, and sound is recorded release-push K by the chip storage when directly being broadcasted by public address equipment
2Promptly stop recording.The luminous tube LED1 that is connected to the chip LED end when recording is luminous, promptly extinguishes after record is full.When pressing K switch
3The time, the PLAY end of chip is triggered, and the voice signal that is stored in the chip is taken out by the SPKN end, through variable resistor W
2After dividing the extrusion audio signal, repeat to broadcast by public address equipment.At this moment, hold the minitype acoustic generator RL that joins also the content of storage to be exported with SPKN.When public address equipment when broadcast person is far away, can monitor its recording playback effect thus.Whenever press K switch next time
3, can replay once.Again the REC of flip chip end can be stored new content.And powered-down K switch
1After, the chip content stored can not lost.
The voice storage recording and playback ic that is adopted in the utility model technical solution is not subjected to the restriction of model specified among the embodiment, can be the voice storage recording and playback ic of any model with described function.
Adopt the utility model recording playback sound capable of circulation microphone to substitute common microphone of the prior art, just can make existingly amplify, stereo set increases and repeats recording/playing function, and do not need to amplify, stereo set carries out any transformation, and is with low cost, is convenient to enforcement.The utility model microphone is used for communication apparatus such as intercom, can makes it have remote circulation repeated call function.
Claims (5)
1, a kind of recording playback sound microphone capable of circulation has microphone MIC1, and it is characterized in that: the output of microphone MIC1 is divided into two-way, leads up to capacitor C
4Insert the base stage of triode BG and amplify, the MIC end of language storage recording and playback ic (HFC-L20-300) is inserted on another road; The current collection of triode BG is signal output part very, through capacitor C
5Coupling, variable resistor W
1Dividing potential drop inserts plug CA; The VCC end of language storage recording and playback ic is the positive supply input, and GND hold ground connection, and REC end and PLAY hold respectively through current-limiting resistance R
1, R
2When joining, through K switch with power supply E positive pole
2, K
3Ground connection, SPKN holds through capacitor C
3Coupling, variable resistor W
2Insert plug CA after the dividing potential drop.
2, microphone according to claim 1 is characterized in that: described plug CA can be substituted with the receiver J that has plug CAO by the wireless launcher F of complete preparation.
3, microphone according to claim 1 is characterized in that: the SPKN termination of described language storage recording and playback ic has minitype acoustic generator RL.
4, microphone according to claim 1 is characterized in that: the LED termination of described language storage recording and playback ic has luminous tube LED1.
5, microphone according to claim 1 is characterized in that: described power supply E positive pole is connected to the frequency bypass capacitor C respectively
1With high-frequency bypass capacitor C
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98202817 CN2322343Y (en) | 1998-03-31 | 1998-03-31 | Microphone capable of circulation recording/playing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98202817 CN2322343Y (en) | 1998-03-31 | 1998-03-31 | Microphone capable of circulation recording/playing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2322343Y true CN2322343Y (en) | 1999-06-02 |
Family
ID=33959793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98202817 Expired - Fee Related CN2322343Y (en) | 1998-03-31 | 1998-03-31 | Microphone capable of circulation recording/playing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2322343Y (en) |
-
1998
- 1998-03-31 CN CN 98202817 patent/CN2322343Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |