CN108882114A - A kind of audio transmission de-noising processor - Google Patents
A kind of audio transmission de-noising processor Download PDFInfo
- Publication number
- CN108882114A CN108882114A CN201810745424.9A CN201810745424A CN108882114A CN 108882114 A CN108882114 A CN 108882114A CN 201810745424 A CN201810745424 A CN 201810745424A CN 108882114 A CN108882114 A CN 108882114A
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- capacitor
- chip
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- audio
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- 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
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of audio transmission de-noising processors, including audio defeat chip, first resistor to 3rd resistor, first capacitor to the 13rd capacitor, inductance and DC power supply, compared with prior art, the present invention is installed between the cable of audio transmission, clutter can be effectively filtered out, it is anti-interference, the sound quality of audio transmission is effectively improved, is had the value of popularization and application.
Description
Technical field
The present invention relates to a kind of music electronic hardware more particularly to a kind of audio transmission de-noising processors.
Background technique
The referred to musician of electronic musical instrument triggers electronic signal by limited means, make it using electronic synthesis technology or
Sampling technique is come the musical instrument that is made a sound by electroacoustic equipment, such as electronic organ, fender, electronic synthesizer, electronic drum.It is existing
In technology, electronic musical instrument in the application, needs to carry out transmission audio by tone frequency channel wire, and audio cable will receive other of environment
Electromagnetic interference or radio interference of electrical appliance etc. cause audio sound quality to decline, and accordingly, there exist rooms for improvement.
Summary of the invention
The object of the invention is that providing a kind of audio transmission de-noising processor to solve the above-mentioned problems.
The present invention is achieved through the following technical solutions above-mentioned purpose：
The present invention include audio defeat chip, first resistor to 3rd resistor, first capacitor to the 13rd capacitor, inductance and
The anode of DC power supply, DC power supply is connect with the first end of the first pin of audio defeat chip and third capacitor simultaneously, directly
The cathode in galvanic electricity source simultaneously with the second end of third capacitor, the first end of the 4th capacitor, first end, the first resistor of the 5th capacitor
First end, audio defeat chip the 7th pin and the 9th capacitor first end connection, the first end of first capacitor and second
The first end of capacitor is audio input end, and the second end of first capacitor is connect with the 13rd pin of audio defeat chip, second
The second end of capacitor is connect with the second pin of audio defeat chip, the 14th pin of audio defeat chip and the 4th capacitor
Second end connection, the tenth pin of audio defeat chip are connect with the second end of the 5th capacitor, and the 5th of audio defeat chip draws
Foot is connect with the first end of the 7th capacitor, and the second end of the 7th capacitor is connect with the first end of the 4th resistance, and the of 3rd resistor
Two ends are connect with the first end of the second end of first resistor and the tenth capacitor simultaneously, the second end and audio defeat core of the tenth capacitor
6th pin of piece connects, and the third pin of audio defeat chip is connect with the first end of the 11st capacitor, audio defeat chip
The 4th pin simultaneously connect with the first end of the second end of the 11st capacitor and the 13rd capacitor, the second end of the 13rd capacitor
Be audio output with the first end of the 14th capacitor, the second end of the 14th capacitor simultaneously with audio defeat chip the 11st
The connection of the first end of pin and the 12nd capacitor, the second end of the 12nd capacitor and the 12nd pin of audio defeat chip connect
It connects, the 8th pin of audio defeat chip and the first end of second resistance connect, the 9th pin of audio defeat chip and the 6th
The first end of capacitor connects, and the second end of the 6th capacitor is connect with the first end of the first end of inductance and the 8th capacitor simultaneously, the
The second end of eight capacitors is connect with the second end of the second end of the 9th capacitor, the second end of inductance and second resistance simultaneously.
The beneficial effects of the present invention are：
The present invention is a kind of audio transmission de-noising processor, and compared with prior art, the present invention is installed on audio transmission
Between cable, clutter can be effectively filtered out, it is anti-interference, the sound quality of audio transmission is effectively improved, is had the value of popularization and application.
Detailed description of the invention
Fig. 1 is circuit structure schematic diagram of the invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings：
As shown in Figure 1：The present invention includes audio defeat chip IC, first resistor R1 to 3rd resistor R3, first capacitor C1
To the 13rd capacitor C13, inductance L and DC power supply, the anode of DC power supply while the first pin with audio defeat chip IC
Connected with the first end of third capacitor C3, the cathode of DC power supply simultaneously with the second end of third capacitor C3, the 4th capacitor C4
First end, the first end of the 5th capacitor C5, the first end of first resistor R1, the 7th pin of audio defeat chip IC and the 9th electricity
The first end for holding C9 connects, and the first end of the first end of first capacitor C1 and the second capacitor C2 are audio input end IN, the first electricity
The second end for holding C1 is connect with the 13rd pin of audio defeat chip IC, the second end and audio defeat chip of the second capacitor C2
The second pin of IC connects, and the 14th pin of audio defeat chip IC is connect with the second end of the 4th capacitor C4, audio defeat
Tenth pin of chip IC is connect with the second end of the 5th capacitor C5, the 5th pin of audio defeat chip IC and the 7th capacitor C7
First end connection, the second end of the 7th capacitor C7 connect with the first end of the 4th resistance R4, and the second end of 3rd resistor R3 is same
When connect with the first end of the second end of first resistor R1 and the tenth capacitor C10, the second end and audio defeat of the tenth capacitor C10
6th pin of chip IC connects, and the third pin of audio defeat chip IC is connect with the first end of the 11st capacitor C11, audio
4th pin of noise reduction chip IC is connect with the first end of the second end of the 11st capacitor C11 and the 13rd capacitor C13 simultaneously, the
The second end of 13 capacitor C13 and the first end of the 14th capacitor C14 are audio output OUT, the second of the 14th capacitor C14
End is connect with the first end of the 11st pin of audio defeat chip IC and the 12nd capacitor C12 simultaneously, the 12nd capacitor C12's
Second end is connect with the 12nd pin of audio defeat chip IC, and the 8th pin of audio defeat chip IC is with second resistance R2's
First end connection, the 9th pin of audio defeat chip IC are connect with the first end of the 6th capacitor C6, and the second of the 6th capacitor C6
End is connect with the first end of the first end of inductance L and the 8th capacitor C8 simultaneously, and the second end of the 8th capacitor C8 is electric with the 9th simultaneously
Second end, the second end of inductance L for holding C9 are connected with the second end of second resistance R2.
The principle of the present invention is left and right identical two main signal channels, and left and right signal is respectively by the 13rd pin and the
The input of two pins is simultaneously exported after noise reduction process by the 11st pin and the 4th pin.Gain is constituted between input and output is
0dB and by the variable band logical low-pass filter cutting channel to pieces and being controlled, the 5th to the tenth pin is sub signal control channel, here left and right
A control channel is shared, is conducive to simplify circuit.Left and right input signal is first mixed into all the way in internal adder, then through pair
Direct-current control voltage is obtained on the tenth pin after the peak detector detection of signal amplifier composition, is then set by interior
Converter become DC control current be added to amplifier go change main channel bandwidth.It is defeated by denoiser design requirement
Radio-frequency component in people's signal is abundanter, and direct-current control voltage is bigger and the DC control current that is converted into is smaller, corresponding main
The bandwidth in channel is wider.Specifically, control electric current is every to reduce 1 degree, bandwidth increases 27Hz.Conversely, when the height in input signal
Frequency ingredient is fewer, and the bandwidth of main channel is narrower.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of audio transmission de-noising processor, it is characterised in that：Including audio defeat chip, first resistor to 3rd resistor,
First capacitor to the 13rd capacitor, inductance and DC power supply, the anode of DC power supply draws with the first of audio defeat chip simultaneously
Foot is connected with the first end of third capacitor, the cathode of DC power supply simultaneously with the second end of third capacitor, the 4th capacitor first
End, the first end of the 5th capacitor, the first end of first resistor, audio defeat chip the 7th pin and the 9th capacitor first end
The first end of connection, the first end of first capacitor and the second capacitor is audio input end, and the second end and audio of first capacitor drop
It makes an uproar the 13rd pin connection of chip, the second end of the second capacitor connect with the second pin of audio defeat chip, audio defeat
14th pin of chip is connect with the second end of the 4th capacitor, and the second of the tenth pin of audio defeat chip and the 5th capacitor
End connection, the 5th pin of audio defeat chip are connect with the first end of the 7th capacitor, the second end of the 7th capacitor and the 4th electricity
The first end of resistance connects, and the second end of 3rd resistor is connect with the first end of the second end of first resistor and the tenth capacitor simultaneously,
The second end of tenth capacitor is connect with the 6th pin of audio defeat chip, the third pin of audio defeat chip and the 11st electricity
The first end of appearance connects, the 4th pin of audio defeat chip simultaneously with the second end of the 11st capacitor and the 13rd capacitor the
The first end of one end connection, the second end of the 13rd capacitor and the 14th capacitor is audio output, the second of the 14th capacitor
End simultaneously connect with the first end of the 11st pin of audio defeat chip and the 12nd capacitor, the second end of the 12nd capacitor and
12nd pin of audio defeat chip connects, and the 8th pin of audio defeat chip and the first end of second resistance connect, sound
9th pin of frequency noise reduction chip is connect with the first end of the 6th capacitor, the second end of the 6th capacitor while the first end with inductance
Connected with the first end of the 8th capacitor, the second end of the 8th capacitor simultaneously with the second end of the 9th capacitor, the second end of inductance and
The second end of second resistance connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810745424.9A CN108882114A (en) | 2018-07-09 | 2018-07-09 | A kind of audio transmission de-noising processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810745424.9A CN108882114A (en) | 2018-07-09 | 2018-07-09 | A kind of audio transmission de-noising processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108882114A true CN108882114A (en) | 2018-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810745424.9A Pending CN108882114A (en) | 2018-07-09 | 2018-07-09 | A kind of audio transmission de-noising processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108882114A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202818578U (en) * | 2012-05-02 | 2013-03-20 | 成都创图科技有限公司 | Special active loudspeaker having noise reduction function for reception |
| CN203057465U (en) * | 2013-01-05 | 2013-07-10 | 成都果范创想科技有限公司 | Filtering noise-reduction audio frequency circuit |
| CN106301404A (en) * | 2016-08-15 | 2017-01-04 | 成都云材智慧数据科技有限公司 | A kind of low noise ANTENNAUDIO emission system based on linear amplifier circuit |
-
2018
- 2018-07-09 CN CN201810745424.9A patent/CN108882114A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202818578U (en) * | 2012-05-02 | 2013-03-20 | 成都创图科技有限公司 | Special active loudspeaker having noise reduction function for reception |
| CN203057465U (en) * | 2013-01-05 | 2013-07-10 | 成都果范创想科技有限公司 | Filtering noise-reduction audio frequency circuit |
| CN106301404A (en) * | 2016-08-15 | 2017-01-04 | 成都云材智慧数据科技有限公司 | A kind of low noise ANTENNAUDIO emission system based on linear amplifier circuit |
Non-Patent Citations (2)
| Title |
|---|
| 谭进: "《Hi-Fi音响制作维修大全》", 31 December 1994 * |
| 陈郁发: "《音响集成电路大全》", 31 July 1989 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20181123 |