CN202634649U - Double-microphone - Google Patents
Double-microphone Download PDFInfo
- Publication number
- CN202634649U CN202634649U CN 201220284048 CN201220284048U CN202634649U CN 202634649 U CN202634649 U CN 202634649U CN 201220284048 CN201220284048 CN 201220284048 CN 201220284048 U CN201220284048 U CN 201220284048U CN 202634649 U CN202634649 U CN 202634649U
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- circuit
- audio
- double
- reverberation
- despot
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Abstract
The utility model discloses a double-microphone which comprises a sound pick-up and a sound source accompany voice frequency input end. The sound pick-up is connected with a sound-electricity switching circuit, the sound-electricity switching circuit is connected with a preamplifier, the preamplifier is connected with a reverberation circuit, and the reverberation circuit is connected with a voice frequency power amplifier. The sound source accompany voice frequency input end is connected to the voice frequency power amplifier through wired input. The double-microphone is characterized in that the voice frequency power amplifier is connected with a voice frequency input circuit, and a voice frequency output circuit is composed of two lines of voice frequency interface circuits in parallel. By means of structural improvements, the double-microphone can achieve effect of two lines of voice frequency output on the basis of achieving voice and sound source accompany voice frequency input, consequently two persons can listen to joint voice effect by earphones at the same time, and karaok TV (KTV) spot effect can be achieved.
Description
Technical field
The utility model relates to a kind of wheat despot, belongs to the sound appliances field.
Background technology
The wheat despot has another name called microphone, is a kind of sound appliances commonly used in KTV, stage or home entertaining; Be used for singing, and can realize the reverberation of voice and vocal accompaniment sound, but existing wheat despot; Usually can only import as signal, can not solve signal output, particularly the problem of signal two-way output.
Summary of the invention
Single to existing microphone function; Can't realize the problem of audio frequency output; The utility model discloses a kind of double wheat despot; Can on the basis of realizing voice and the input of source of sound vocal accompaniment audio frequency, realize the effect that double-channel audio is exported, doublely be with earphone to listen to simultaneously to converge sound effect, reach KTV spot effect thereby can make.
For realizing above-mentioned purpose, the utility model is realized through following technical proposals:
Double wheat despot; Comprise pick-up, source of sound vocal accompaniment audio input end, charging input end, pick-up is connected with the acoustic-electric change-over circuit, and the acoustic-electric change-over circuit is connected with preamplifier; Preamplifier connects reverberation circuit, and reverberation circuit connects audio-frequency power amplifier through the electroacoustic change-over circuit; Source of sound vocal accompaniment audio input end is connected to audio-frequency power amplifier through wired input; Charging input end is connected with charging circuit, and charging circuit is other circuit supplies through power converting circuit, it is characterized in that audio-frequency power amplifier is connected with the defeated road of audio frequency circuit, and said audio output circuit is composed in parallel by the double-channel audio interface circuit.
Connect through foregoing circuit; Its operation principle is: voice and ambient sound pass through microphone pickup; After acoustic-electric change-over circuit (being called the A/D change-over circuit again) conversion; The process preamplifier amplifies, and the echo processing is carried out through reverberation circuit in the amplification back, and echo processing back signal entering audio-frequency power amplifier input carries out overlap-add procedure with the audio frequency of the audio frequency of accompanying from source of sound (like sources of sound such as mobile phone, computer, mobile DVD) input; The interface of source of sound vocal accompaniment audio frequency through input is input to the audio-frequency power amplifier input and voice converges through wired; Voice and source of sound accompaniment sound converge the audio signal input end mouth of ingoing power amplifier; Power amplifier carries out the Circuit Matching debugging; Satisfy the power condition of double-channel audio parallel connection output; Realize that through two interface circuits double-channel audios output realizes doublely being with earphone to listen to the K song simultaneously to converge sound effect, reach KTV spot effect again.
Wherein, in order to realize the regulating and controlling to sound, reverberation, charging, be connected with the volume switch circuit between said preamplifier and the reverberation circuit, the volume switch circuit is electrically connected with the volume switch adjusting key that double wheat seizes by force on the shell; Said reverberation circuit is connected with the reverberation switching circuit, and the reverberation switching circuit is electrically connected with the reverberation switch adjusting key that double wheat seizes by force on the shell; Said charging circuit is connected with power switch circuit, and power switch circuit is electrically connected with the power switch key that double wheat seizes by force on the shell.
Wherein, said audio interface circuit is electrically connected with audio output interface on the double wheat despot shell, inserts earphone etc. then and can hear the sound of wheat in seizing by force.
Further, the double wheat despot of the utility model also is provided with the wireless transmission circuit that is used to receive audiogenic device emission ANTENNAUDIO, and wireless transmission circuit is connected with the ANTENNAUDIO decoding circuit, and the ANTENNAUDIO decoding circuit is connected to audio-frequency power amplifier.
Receive the audiogenic device emission ANTENNAUDIO reduction audio signal of decoding through wireless transmission circuit, carry out power amplification and can realize audio frequency output thereby signal is connected to the power amplifier audio signal input end.
In the utility model, foregoing circuit all is at audio area circuit types commonly used, as long as any circuit module can be realized above-mentioned described function in the utility model; Both can be used for the utility model; Preferably, said reverberation circuit is for being integrated chip U3, and model is PT2399; Said preamplifier is integrated chip IC1, and audio-frequency power amplifier is integrated chip IC3, and model is MSOP8-4809; Said power converting circuit is integrated chip U4, and model is XC6206P332M.
Description of drawings
Fig. 1 a, 1b are the double wheat despot's of the utility model external structure sketch map, interface surface figure;
Fig. 2 is the double wheat despot's of the utility model a circuit structure diagram;
Fig. 3 a, Fig. 3 b, Fig. 3 c have shown concrete circuit member connection structure respectively.
Fig. 4 a, 4b, 4c, 4d, 4e, 4f are respectively the enlarged drawing of Fig. 3 a, 3b, 3c.
Embodiment
With reference to figure 1a, 1b; The double wheat despot of the utility model is connected with audio frequency and video playback equipment 10, on shell, is provided with power switch key 11, volume switch adjusting key 12, reverberation switch adjusting key 13; The bottom surface is an interface surface; Which is provided with source of sound vocal accompaniment audio input interface 14, this interface also is used as USB charging inlet and two audio output interfaces 15 simultaneously.
With reference to figure 2; The internal circuit interface schema that has shown the double wheat despot of the utility model; Comprise pick-up, source of sound vocal accompaniment audio input end, charging input end, pick-up is connected with the acoustic-electric change-over circuit, and the acoustic-electric change-over circuit is connected with preamplifier; Preamplifier connects reverberation circuit, and reverberation circuit connects audio-frequency power amplifier through the electroacoustic change-over circuit; Source of sound vocal accompaniment audio input end is connected to audio-frequency power amplifier through wired input; Be used to receive the wireless transmission circuit of audiogenic device emission ANTENNAUDIO, wireless transmission circuit is connected with the ANTENNAUDIO decoding circuit, and the ANTENNAUDIO decoding circuit is connected to audio-frequency power amplifier; Charging input end is connected with charging circuit, and charging circuit is other circuit supplies through power converting circuit, and audio-frequency power amplifier is connected with the defeated road of audio frequency circuit, and audio output circuit is composed in parallel by the double-channel audio interface circuit.
With reference to figure 3a-3c; The structure connection layout that has shown the circuit element that the utility model is concrete used; Wherein the A representative is the USB charging input end of source of sound vocal accompaniment audio input end and 5V, and the audio frequency of source of sound vocal accompaniment audio input end directly is delivered to audio-frequency power amplifier C (connected mode is that R, L connect stitch), and charging input end is connected to charging circuit A1; Wherein be provided with the S1 switch that is used for control switch; With integrated chip U4, model is that XC6206P332M is that remaining circuit provides electric power as power converting circuit A2 then, and this circuit is BAT, VCC5V (connection reverberation), VCCBT (connection wireless transmission circuit) with the stitch that is connected of other circuit.B represents the pick-up input, and B1 is connected with the acoustic-electric change-over circuit, and acoustic-electric change-over circuit B1 is connected with preamplifier, and preamplifier connects reverberation circuit, and reverberation circuit connects audio-frequency power amplifier C through electroacoustic change-over circuit B2, and the connection front line is R, L.Wherein reverberation circuit is for being integrated chip U3, and model is PT2399; Said preamplifier is integrated chip IC1, and model is MSOP8-4809.Wherein be provided with volume switch circuit B3, reverberation switching circuit B4.C represents audio-frequency power amplifier; The wireless transmission circuit BT2 that is used to receive audiogenic device emission ANTENNAUDIO is connected with ANTENNAUDIO decoding circuit C1; ANTENNAUDIO decoding circuit C1 is connected to audio-frequency power amplifier C; Wherein audio-frequency power amplifier C is integrated chip IC3, and model is MSOP8-4809; Audio-frequency power amplifier C be connected by the audio output circuit that composes in parallel by double-channel audio interface circuit C21, C22.
For clear display circuit structure, the applicant is divided into two parts enlarged and displayed respectively with Fig. 3 a, Fig. 3 b, Fig. 3 c, and promptly Fig. 3 a is decomposed into Fig. 4 a, 4b, and Fig. 3 b is decomposed into Fig. 4 c, 4d, and Fig. 3 c is decomposed into Fig. 4 e, 4f.This only is the picture amplification of doing for the needs of clear demonstration, does not cut apart on the representative structure.
Claims (9)
1. double wheat despot; Comprise pick-up, source of sound vocal accompaniment audio input end, charging input end, pick-up is connected with the acoustic-electric change-over circuit, and the acoustic-electric change-over circuit is connected with preamplifier; Preamplifier connects reverberation circuit, and reverberation circuit connects audio-frequency power amplifier through the electroacoustic change-over circuit; Source of sound vocal accompaniment audio input end is connected to audio-frequency power amplifier through wired input; Charging input end is connected with charging circuit, and charging circuit is other circuit supplies through power converting circuit, it is characterized in that audio-frequency power amplifier is connected with the defeated road of audio frequency circuit, and said audio output circuit is composed in parallel by the double-channel audio interface circuit.
2. double wheat despot according to claim 1 is characterized in that being connected with between said preamplifier and the reverberation circuit volume switch circuit, and the volume switch circuit is electrically connected with the volume switch adjusting key that double wheat seizes by force on the shell.
3. double wheat despot according to claim 1 is characterized in that said reverberation circuit is connected with the reverberation switching circuit, and the reverberation switching circuit is electrically connected with the reverberation switch adjusting key that double wheat seizes by force on the shell.
4. double wheat despot according to claim 1 is characterized in that said charging circuit is connected with power switch circuit, and power switch circuit is electrically connected with the power switch key that double wheat seizes by force on the shell.
5. double wheat despot according to claim 1 is characterized in that said audio interface circuit is electrically connected with the audio output interface that double wheat seizes by force on the shell.
6. double wheat despot according to claim 1; It is characterized in that also being provided with the wireless transmission circuit that is used to receive audiogenic device emission ANTENNAUDIO; Wireless transmission circuit is connected with the ANTENNAUDIO decoding circuit, and the ANTENNAUDIO decoding circuit is connected to audio-frequency power amplifier.
7. double wheat despot according to claim 1 is characterized in that said reverberation circuit for being integrated chip U3, and model is PT2399.
8. double wheat despot according to claim 1 is characterized in that said preamplifier is integrated chip IC1, and audio-frequency power amplifier is integrated chip IC3, and model is MSOP8-4809.
9. double wheat despot according to claim 1 is characterized in that said power converting circuit is integrated chip U4, and model is XC6206P332M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284048 CN202634649U (en) | 2012-06-15 | 2012-06-15 | Double-microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284048 CN202634649U (en) | 2012-06-15 | 2012-06-15 | Double-microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202634649U true CN202634649U (en) | 2012-12-26 |
Family
ID=47387785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220284048 Expired - Lifetime CN202634649U (en) | 2012-06-15 | 2012-06-15 | Double-microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202634649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531191A (en) * | 2013-09-30 | 2014-01-22 | 乐视致新电子科技（天津）有限公司 | Sound processing method and device |
-
2012
- 2012-06-15 CN CN 201220284048 patent/CN202634649U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531191A (en) * | 2013-09-30 | 2014-01-22 | 乐视致新电子科技（天津）有限公司 | Sound processing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |