CN107197406A - A kind of Multifunctional audio integrated system - Google Patents
A kind of Multifunctional audio integrated system Download PDFInfo
- Publication number
- CN107197406A CN107197406A CN201710512532.7A CN201710512532A CN107197406A CN 107197406 A CN107197406 A CN 107197406A CN 201710512532 A CN201710512532 A CN 201710512532A CN 107197406 A CN107197406 A CN 107197406A
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- CN
- China
- Prior art keywords
- circuit
- module
- audio
- signal input
- power amplifier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000034 method Methods 0.000 claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 20
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 20
- 230000005236 sound signal Effects 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Abstract
A kind of Multifunctional audio integrated system, including Audio signal input device and power amplifier output equipment, the integrated circuit modules of Audio Signal Processing are provided between Audio signal input device and the power amplifier output equipment, the integrated circuit modules include signal input module, single binary channels handover module, signal amplification circuit, overload compressor circuit, bass channel processing module, automatic mute module and with power amplifier output module, the audio signal input end of the signal input module is connected with single binary channels handover module, single binary channels handover module includes single double switching switches, left channel audio process circuit and right channel audio process circuit.The present invention determines monophonic and stereosonic output by single binary channels handover module, and provided with overload compression protection in left passage and right passage, it is ensured that audio signal occurs without too high voltages after amplification, maintains the stabilization of audio integrated system.
Description
Technical field
The present invention relates to field of audio, particularly a kind of Multifunctional audio integrated system.
Background technology
Sound equipment is the equipment for sending sound that a kind of people are commonly used, and it has a wide range of application, including family, meeting
Numerous occasions such as room, KTV, dancing hall, concert.
Existing sound system includes effect device, power amplifier, multiple audio amplifiers etc. mostly, but its problem of exist
In L channel or R channel all have current and voltage signals overload after audio signal amplification, stable operation are impacted, simultaneously
Bass processing is unreasonable.
The content of the invention
In order to overcome the disadvantages mentioned above of prior art, the purpose of the present invention is that have single binary channels switching and with overload pressure
A kind of Multifunctional audio integrated system of contracting function.
The technical solution adopted for the present invention to solve the technical problems is：A kind of Multifunctional audio integrated system, including sound
Believe between frequency signal input device and power amplifier output equipment, Audio signal input device and the power amplifier output equipment provided with audio
Number processing integrated circuit modules, wherein：The integrated circuit modules include signal input module, single binary channels handover module,
Signal amplification circuit, overload compressor circuit, bass channel processing module, automatic mute module and with power amplifier output module, it is described
The audio signal input end of signal input module is connected with single binary channels handover module, and single binary channels handover module includes
Single double switching switches, left channel audio process circuit and right channel audio process circuit, the double switching switch front ends of the list and letter
Number input module connection, rear end connects left channel audio process circuit and right channel audio process circuit respectively, and the signal is put
Big circuit and overload compressor circuit are equipped with two groups, and connect left channel audio process circuit and right channel audio processing electricity respectively
Road, the signal amplification circuit is sequentially connected overload compressor circuit, the left access port or right access port of power amplifier output module.
As a further improvement on the present invention：The bass channel processing module includes bass processing circuit, the bass
Process circuit front end is respectively connected to two groups of signal amplification circuits, and the bass port of power amplifier output module is accessed in rear end.
As a further improvement on the present invention：The automatic mute module includes automatic mute and controls circuit, described automatic
The single binary channels handover module of muting control circuit front end connection, the Opportunity awaiting control for linear switch port of power amplifier output module is accessed in rear end.
As a further improvement on the present invention：The signal input module includes USB connection ends, the USB connection ends
Powered reduction voltage circuit provided with USB.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention determines monophonic and stereosonic output by single binary channels handover module, and is set in left passage and right passage
There is overload compression protection, it is ensured that audio signal occurs without too high voltages after amplification, maintains the stabilization of audio integrated system.
Bass channel processing module rejects the high-frequency signal in audio signal in the present invention, retains low frequency signal output,
Bass is independently exported, and increases the bass effect of audio integrated system.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is single binary channels handover module circuit diagram.
Fig. 3 is the circuit diagram of signal amplification circuit and overload compressor circuit.
Fig. 4 is the electrical block diagram of bass processing circuit.
Fig. 5 is automatic mute modular circuit schematic diagram.
Fig. 6 is that USB powers reduction voltage circuit schematic diagram.
Embodiment
In conjunction with brief description of the drawings, the present invention is further described with embodiment：
With reference to Fig. 1, a kind of Multifunctional audio integrated system, including Audio signal input device and power amplifier output equipment, the sound
The integrated circuit modules of Audio Signal Processing are provided between frequency signal input device and power amplifier output equipment, wherein：It is described integrated
Circuit module includes signal input module, single binary channels handover module, signal amplification circuit, overload compressor circuit, bass channel
Processing module, automatic mute module and power amplifier output module, the audio signal input end of the signal input module and single bilateral
Road handover module connection, single binary channels handover module includes single double switching switches, left channel audio process circuit and the right side
Channel audio process circuit, the double switching switch front ends of the list are connected with signal input module, and rear end connects left passage sound respectively
Frequency process circuit and right channel audio process circuit, the signal amplification circuit and overload compressor circuit are equipped with two groups, and divide
Left channel audio process circuit and right channel audio process circuit are not connected, and the signal amplification circuit is sequentially connected overload compression
The left access port or right access port of circuit, power amplifier output module.
With reference to Fig. 2, the double switching switches of the list are provided with single channel gear and binary channels gear, when opening single channel gear
When, left channel audio process circuit is connected, when opening binary channels gear, left channel audio process circuit is also turned on and the right side is logical
Channel audio process circuit, the signal amplification electricity that the left channel audio process circuit and right channel audio process circuit are sequentially connected
Road, overload compressor circuit principle are similar.
With reference to Fig. 3, the signal amplification circuit is provided with left-channel signal amplifying circuit and right channel signal amplifying circuit, institute
State overload compressor circuit and be provided with left channel overload compressor circuit and right channel overload compressor circuit, and the accordingly left passage of connection access
Audio frequency processing circuit and right channel audio process circuit.The correspondingly connected power amplifier output of two groups of difference of the overload compressor circuit
The left access port L CH of module and right access port R CH.The audio that the overload compressor circuit amplifies signal amplification circuit
Signal is compressed, and is maintained within 700 millivolts, improves the stability of sound equipment integrated system.
With reference to Fig. 4, the bass channel processing module includes bass processing circuit, the bass processing circuit front end difference
Two groups of signal amplification circuits are accessed, the bass port of power amplifier output module is accessed in rear end.The bass processing circuit front end and letter
The comparator U2B and comparator U3B of number amplifying circuit inverting input connection, end A CH outputs and the bass of power amplifier module
Port A CH connections.The bass processing circuit obtains audio signal in signal amplification circuit, by the high frequency in audio signal
Signal is rejected, and retains low frequency signal input power amplifier output module.
With reference to Fig. 5, the automatic mute module includes automatic mute and controls circuit, and the automatic mute controls circuit front-end
The single binary channels handover module of connection, the Opportunity awaiting control for linear switch port of power amplifier output module is accessed in rear end.The automatic mute control
The binary channels gear of the single double switching switches of circuit front-end connection and comparator U1A output end, obtain signal transmission dynamic, it is determined that
Whether audio signal is in transmission state, and rear end is connected with the Opportunity awaiting control for linear switch port EN AMP of power amplifier output module, and detection has
There is no signal input, electric capacity C70 electric discharges, time constant is 80 seconds, the Opportunity awaiting control for linear switch port in power amplifier receives feedback signal,
Into holding state.The automatic mute control circuit leads to power supply indicator feedback road in test point TP22, passes sequentially through
Diode D5, resistance R93 are connected with power supply indicator.
With reference to Fig. 6, the signal input module includes USB connection ends, and the USB connection ends power decompression provided with USB
Circuit.The USB connection ends use the USB port of four connections, including duplex feeding circuit and two-way audio data transfer
Circuit, 5V is reduced to by USB connection ends supply voltage 10V.
In summary, one of ordinary skill in the art is read after file of the present invention, technique according to the invention scheme with
Technical concept makes other various corresponding conversion schemes without creative mental labour, belongs to the model that the present invention is protected
Enclose.
Claims (4)
1. a kind of Multifunctional audio integrated system, including Audio signal input device and power amplifier output equipment, the audio signal
The integrated circuit modules of Audio Signal Processing are provided between input equipment and power amplifier output equipment, it is characterized in that：The integrated electricity
Road module include signal input module, single binary channels handover module, signal amplification circuit, overload compressor circuit, at bass channel
Manage module, automatic mute module and with power amplifier output module, the audio signal input end of the signal input module and single bilateral
Road handover module connection, single binary channels handover module includes single double switching switches, left channel audio process circuit and the right side
Channel audio process circuit, the double switching switch front ends of the list are connected with signal input module, and rear end connects left passage sound respectively
Frequency process circuit and right channel audio process circuit, the signal amplification circuit and overload compressor circuit are equipped with two groups, and divide
Left channel audio process circuit and right channel audio process circuit are not connected, and the signal amplification circuit is sequentially connected overload compression
The left access port or right access port of circuit, power amplifier output module.
2. a kind of Multifunctional audio integrated system according to claim 1, it is characterized in that：The bass channel processing module
Including bass processing circuit, the bass processing circuit front end is respectively connected to two groups of signal amplification circuits, and rear end access power amplifier is defeated
Go out the bass port of module.
3. a kind of Multifunctional audio integrated system according to claim 1, it is characterized in that：The automatic mute module includes
Automatic mute controls circuit, and the single binary channels handover module of the automatic mute control circuit front-end connection, rear end access power amplifier is defeated
Go out the Opportunity awaiting control for linear switch port of module.
4. a kind of Multifunctional audio integrated system according to claim 1, it is characterized in that：The signal input module includes
There are a USB connection ends, the USB connection ends power reduction voltage circuit provided with USB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512532.7A CN107197406A (en) | 2017-06-29 | 2017-06-29 | A kind of Multifunctional audio integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512532.7A CN107197406A (en) | 2017-06-29 | 2017-06-29 | A kind of Multifunctional audio integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107197406A true CN107197406A (en) | 2017-09-22 |
Family
ID=59881541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710512532.7A Pending CN107197406A (en) | 2017-06-29 | 2017-06-29 | A kind of Multifunctional audio integrated system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107197406A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647866A (en) * | 1987-06-30 | 1989-01-11 | Matsushita Electric Ind Co Ltd | Special acoustic effect switching device |
| JPH05144241A (en) * | 1991-11-25 | 1993-06-11 | Fujitsu General Ltd | Cs sound broadcasting receiver |
| JPH05207400A (en) * | 1992-01-24 | 1993-08-13 | Sony Corp | Television reception circuit on vehicle |
| JPH0816182A (en) * | 1994-07-01 | 1996-01-19 | Nippon Columbia Co Ltd | Karaoke device |
| CN101039529A (en) * | 2006-01-10 | 2007-09-19 | 雅马哈株式会社 | Stereo/monaural switching circuit and integrated circuit having the same |
| CN101816193A (en) * | 2007-10-05 | 2010-08-25 | 邦及欧路夫森有限公司 | Low frequency management for multichannel sound reproduction systems |
| CN203151435U (en) * | 2013-01-21 | 2013-08-21 | 东莞联洲电子科技有限公司 | Audio input control and power amplification circuit |
| CN104202000A (en) * | 2014-08-26 | 2014-12-10 | 无锡焺通微电子有限公司 | Earphone volume control circuit with built-in charge pump and mute function |
-
2017
- 2017-06-29 CN CN201710512532.7A patent/CN107197406A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647866A (en) * | 1987-06-30 | 1989-01-11 | Matsushita Electric Ind Co Ltd | Special acoustic effect switching device |
| JPH05144241A (en) * | 1991-11-25 | 1993-06-11 | Fujitsu General Ltd | Cs sound broadcasting receiver |
| JPH05207400A (en) * | 1992-01-24 | 1993-08-13 | Sony Corp | Television reception circuit on vehicle |
| JPH0816182A (en) * | 1994-07-01 | 1996-01-19 | Nippon Columbia Co Ltd | Karaoke device |
| CN101039529A (en) * | 2006-01-10 | 2007-09-19 | 雅马哈株式会社 | Stereo/monaural switching circuit and integrated circuit having the same |
| CN101816193A (en) * | 2007-10-05 | 2010-08-25 | 邦及欧路夫森有限公司 | Low frequency management for multichannel sound reproduction systems |
| CN203151435U (en) * | 2013-01-21 | 2013-08-21 | 东莞联洲电子科技有限公司 | Audio input control and power amplification circuit |
| CN104202000A (en) * | 2014-08-26 | 2014-12-10 | 无锡焺通微电子有限公司 | Earphone volume control circuit with built-in charge pump and mute function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170922 |