CN202773068U - Circuit module having function of reverberation microphone recording - Google Patents
Circuit module having function of reverberation microphone recording Download PDFInfo
- Publication number
- CN202773068U CN202773068U CN201220453253.0U CN201220453253U CN202773068U CN 202773068 U CN202773068 U CN 202773068U CN 201220453253 U CN201220453253 U CN 201220453253U CN 202773068 U CN202773068 U CN 202773068U
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- China
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- circuit
- reverberation
- circuit module
- preamplifier
- mobile phone
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- Expired - Lifetime
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- Reverberation, Karaoke And Other Acoustics (AREA)
- Circuit For Audible Band Transducer (AREA)
- Telephone Function (AREA)
Abstract
The utility model discloses a circuit module having a function of reverberation microphone recording. The circuit module can make recorded audio frequency be adjusted and processed by a reverberation circuit after the circuit module accesses a handset, so the recorded sound can be more perfect and beautiful. The circuit module comprises a sound pickup, an acoustical-electrical conversion circuit, a preamplifier and a reverberation circuit and an electro-acoustic conversion circuit connected with an input end of the handset.
Description
Technical field
The utility model relates to circuit module, relates in particular to the circuit module with Reverberation microphone sound-recording function, belongs to the voicefrequency circuit field.
Background technology
Existing mobile phone when recording audio normally the recording microphone wind by mobile phone directly include sound, because the microphone of mobile phone self only is simple pick up facility, can't be to the sound processing of mediating, existing recording microphone is not good by mobile phone recording microphone wind recording result, can't realize hardware adjustments processing audio problem, so recording effect is relatively poor.
The utility model content
For the defective of prior art, the utility model discloses the circuit module that can have the Reverberation microphone sound-recording function, be used in the recording microphone, can realize sound regulate is processed through reverberation, so that recorded voice has simple and honest/mellow and full effect.
For achieving the above object, the utility model is achieved through the following technical solutions:
Circuit module with Reverberation microphone sound-recording function, described circuit module comprises pick-up, acoustic-electric change-over circuit, preamplifier, reverberation circuit, electroacoustic change-over circuit, wherein pick-up is connected with the acoustic-electric change-over circuit, the acoustic-electric change-over circuit is connected with preamplifier, preamplifier connects reverberation circuit, reverberation circuit is connected to the recording input of mobile phone through the electroacoustic change-over circuit, audio transmission to the handset processes device of the audio frequency of the recording input of mobile phone and the input of mobile phone source of sound vocal accompaniment audio frequency is processed Record and Save.
The circuit of said structure, its operation principle is that voice and ambient sound pass through microphone pickup, after acoustic-electric change-over circuit (A/D change-over circuit) conversion, amplify by preamplifier, carrying out echo by reverberation circuit after amplifying processes, be converted to audio signal by electroacoustic change-over circuit (being the D/A change-over circuit) after echo is processed and enter mobile phone recording input (namely usually alleged mobile phone MIC) and carry out overlap-add procedure with the audio frequency of inputting from mobile phone source of sound vocal accompaniment audio frequency, then through mobile phone processor processing Record and Save.
Audio frequency overlap-add procedure wherein and record in mobile phone that the processor that preserve to be relies on mobile phone finishes.
By foregoing circuit, recording audio gets so that recorded voice is more perfect interesting to listen to after regulating processing by reverberation circuit, has avoided common recording microphone, processes the dry and astringent dull defective of recorded voice through amplification and reverberation tuning.
In order to offer the power supply supply in the parts external worlds such as amplifier, described circuit module also is provided with charging circuit, and described charging circuit one end connects charging input end, and the other end is connected to preamplifier.
In order to realize the regulating and controlling to sound, reverberation, charging, be connected with the volume switch circuit between described preamplifier and the reverberation circuit; Described reverberation circuit is connected with the reverberation switching circuit; Described charging circuit is connected with power switch circuit.
In scheme of the present utility model, each used circuit element is not subject to special restriction, and existing circuit structure is as long as can realize that structure described in the utility model both can be used for the utility model, usually used preamplifier is integrated chip IC2, and model is MSOP8-4809; Reverberation circuit is integrated chip IC2, and model is PT2399; The charging circuit power converting circuit is integrated chip IC6, and model is PT1301.
Description of drawings
Fig. 1 is the structural representation of the utility model circuit module;
Fig. 2 is preamplifier, the reverberation circuit element connection layout of the utility model circuit module;
Fig. 3 is the used charging circuit part drawing of the utility model circuit module.
Embodiment
Can better understand with reference to the accompanying drawings the structure of the utility model circuit module; the accompanying drawing of giving only for schematic diagram; be not the utility model to be consisted of be particularly limited, those skilled in the art still belong to protection range of the present utility model at the model of understanding the basis adjustment of the present utility model spirit, replacing, alternative each circuit element, link position etc.
As shown in Figure 1, circuit module of the present utility model, be mounted in the recording microphone, during use recording microphone is connected with the MIC input of mobile phone, voice and ambient sound pass through microphone pickup, change through the acoustic-electric change-over circuit, amplify by preamplifier, carries out echo by reverberation circuit after amplifying and process, echo is processed and is processed into the audio frequency that audio signal enters mobile phone recording input and the source of sound vocal accompaniment audio frequency input of playing from interior of mobile phone by the electroacoustic change-over circuit and carries out overlap-add procedure; Process Record and Save through the mobile phone processor.
Wherein, be provided with charging circuit preamplifier etc. is carried out supply of electric power.
With reference to figure 2, shown the circuit structure that the utility model is main, stressed preamplifier, the circuit element design of reverberation circuit, below with reference to this structure the utility model is explained in detail: power supply VCC powers to pick-up through resistance R 1 and R2 dividing potential drop, make pick-up work, voice and ambient sound pass through microphone pickup, sending into the one-level pre-amplification circuit that is comprised of R9/R3/C5/IC2MSOP4809 through the C9 capacitive coupling amplifies, through capacitor C 11 couplings, after carrying out the adjusting of reverberation amount and reverberation time by reverberation IC1 PT2399 and reverberation IC peripheral circuit, another amplification end (being comprised of R13/R15/C18/C21/R16/IC2) finally by IC2 amplifies processing, again by MIC OUT2 input, be input to mobile phone, carry out Record and Save in conjunction with the handset audio accompaniment and finish.
Claims (5)
1. the circuit module that has the Reverberation microphone sound-recording function, described circuit module comprises pick-up, acoustic-electric change-over circuit, preamplifier, reverberation circuit, electroacoustic change-over circuit, it is characterized in that pick-up is connected with the acoustic-electric change-over circuit, the acoustic-electric change-over circuit is connected with preamplifier, preamplifier connects reverberation circuit, reverberation circuit is connected to the recording input of mobile phone through the electroacoustic change-over circuit, audio transmission to the handset processes device of the audio frequency of the recording input of mobile phone and the input of mobile phone source of sound vocal accompaniment audio frequency is processed Record and Save.
2. circuit module according to claim 1 is characterized in that also being provided with charging circuit, and described charging circuit one end connects charging input end, and the other end is connected to preamplifier.
3. circuit module according to claim 1 is characterized in that being connected with between described preamplifier and the reverberation circuit volume switch circuit.
4. circuit module according to claim 1 is characterized in that described reverberation circuit is connected with the reverberation switching circuit.
5. circuit module according to claim 2 is characterized in that described charging circuit is connected with power switch circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453253.0U CN202773068U (en) | 2012-09-07 | 2012-09-07 | Circuit module having function of reverberation microphone recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453253.0U CN202773068U (en) | 2012-09-07 | 2012-09-07 | Circuit module having function of reverberation microphone recording |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202773068U true CN202773068U (en) | 2013-03-06 |
Family
ID=47779606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220453253.0U Expired - Lifetime CN202773068U (en) | 2012-09-07 | 2012-09-07 | Circuit module having function of reverberation microphone recording |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202773068U (en) |
-
2012
- 2012-09-07 CN CN201220453253.0U patent/CN202773068U/en not_active Expired - Lifetime
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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: 20130306 |