CN109660903A - A kind of earphone pop sound removing method, system and device - Google Patents
A kind of earphone pop sound removing method, system and device Download PDFInfo
- Publication number
- CN109660903A CN109660903A CN201910032624.4A CN201910032624A CN109660903A CN 109660903 A CN109660903 A CN 109660903A CN 201910032624 A CN201910032624 A CN 201910032624A CN 109660903 A CN109660903 A CN 109660903A
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- Prior art keywords
- audio
- power amplifier
- volume
- threshold
- pop sound
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- 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
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
-
- 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
The invention discloses a kind of earphone pop sound removing method, system and device, method includes: to set audio threshold according to pop sound；When starting to play audio, according to the comparative situation of audio volume and audio threshold, audio power amplifier is opened；When audio finishes or suspends broadcasting, according to the comparative situation of audio volume and audio threshold, audio power amplifier is closed.The present invention eliminates earphone POP sound in such a way that real-time detection judges this pure software of audio volume, completely dispenses with the component for increasing chip area or periphery, and cost of manufacture is greatly saved and reduces design difficulty.It the composite can be widely applied in field of audio processing.
Description
Technical field
The present invention relates to audio signal processing technique field more particularly to a kind of earphone pop sound removing methods, system and device.
Background technique
For earphone and general handheld device, negative voltage is not had generally, and operating voltage can be between 0-vdd, institute
Common-mode voltage with audio signal is vdd/2, that is, audio frequency power amplifier has a bias voltage, this causes audio frequency power amplifier upper
The moment of electricity or electric discharge has the generation or disappearance of a bias voltage.This bias voltage is applied directly in voicefrequency circuit
On capacitance, the movement that capacitance has charge or discharge will lead to, and the movement of this charge or discharge reflection is arrived
It is exactly the explosion sound (pop sound) that human ear can be heard in earphone load.
The method for effectively reducing pop sound now is typically all to consider from the angle of hardware, increases circuit design to slow down
Pop sound.
One of which design is to be charged in advance by increasing a DAC to capacitance.DAC generates one and slowly powers on
Waveform capacitance is pre-charged, so that capacitance is charged to the size of bias voltage in advance, be then maintained this
Audio frequency power amplifier is opened while voltage again, because the voltage at capacitance both ends is as the bias voltage of audio frequency power amplifier at this time
Greatly, without the movement of moment charge and discharge, it is possible to effectively reduce pop sound.
Above-mentioned method is the one of which in hardware handles pop sound method, besides using suitable pull-up and under
The combination of pull-up resistor rises bias voltage slowly and stable.But pop sound in any case, is solved from the angle of hardware
Problem necessarily will increase the area of chip or the component of chip periphery, increases cost of manufacture and increases design difficulty.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of earphone pop sound removing method, system and dresses
It sets.
The technical solution used in the present invention is:
A kind of earphone pop sound removing method, comprising the following steps:
According to pop sound, audio threshold is set；
When starting to play audio, according to the comparative situation of audio volume and audio threshold, audio power amplifier is opened
It opens；
When audio finishes or suspends broadcasting, according to the comparative situation of audio volume and audio threshold, to audio function
Device is put to be closed.
It is described according to audio volume and audio as a kind of further improvement of earphone pop sound removing method
The comparative situation of threshold value, opens audio power amplifier, the step for specifically:
Judgement processing is carried out to the volume of audio in real time, when detecting that the volume of audio is greater than or equal to audio threshold
Just open audio power amplifier.
It is described according to audio volume and audio as a kind of further improvement of earphone pop sound removing method
The comparative situation of threshold value, closes audio power amplifier, the step for specifically:
Judgement processing is carried out to the volume of audio in real time, when detecting that the volume of audio is less than or equal to audio threshold
Just close audio power amplifier.
Another technical solution of the present invention is:
A kind of earphone pop sound elimination system, comprising:
Threshold setting unit, for setting audio threshold according to pop sound；
Power amplifier opening unit, for start play audio when, it is right according to the comparative situation of audio volume and audio threshold
Audio power amplifier is opened；
Power amplifier closing unit, for when audio finishes or suspends broadcasting, according to audio volume and audio threshold
Comparative situation closes audio power amplifier.
The further improvement of system is eliminated as a kind of earphone pop sound, the power amplifier opening unit is specially
For start play audio when, judgement processing is carried out to the volume of audio in real time, until detect the volume of audio be greater than or
Audio power amplifier is just opened when equal to audio threshold.
The further improvement of system is eliminated as a kind of earphone pop sound, the power amplifier closing unit specifically,
For judgement processing being carried out to the volume of audio in real time, until detecting audio when audio finishes or suspends broadcasting
Volume just closes audio power amplifier when being less than or equal to audio threshold.
Another technical solution of the present invention is:
A kind of earphone pop sound cancellation element, comprising:
Memory, for storing program；
Processor, for executing described program, described program makes the processor execute the earphone pop sound elimination
Method.
The beneficial effects of the present invention are:
A kind of earphone pop sound removing method of the present invention, system and device judge the size of audio volume by real-time detection
Earphone POP sound is eliminated to open and close the mode of this pure software of audio power amplifier, completely dispenses with increase chip area
Or the component of periphery, cost of manufacture is greatly saved and reduces design difficulty.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of earphone pop sound removing method of the present invention；
Fig. 2 is the block diagram that a kind of earphone pop sound of the present invention eliminates system；
Waveform diagram when Fig. 3 is the opening of sound intermediate frequency amplifirer of the present invention；
Waveform diagram when Fig. 4 is the closing of sound intermediate frequency amplifirer of the present invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
With reference to Fig. 1, a kind of earphone pop sound removing method of the present invention, comprising the following steps:
According to pop sound, audio threshold is set；
When starting to play audio, according to the comparative situation of audio volume and audio threshold, audio power amplifier is opened
It opens；
When audio finishes or suspends broadcasting, according to the comparative situation of audio volume and audio threshold, to audio function
Device is put to be closed.
With reference to Fig. 3, it is further used as preferred embodiment, the comparison feelings according to audio volume and audio threshold
Condition opens audio power amplifier, the step for specifically:
Judgement processing is carried out to the volume of audio in real time, when detecting that the volume of audio is greater than or equal to audio threshold
Just open audio power amplifier.
Wherein, audio data is initially sent, then because audio data is being sent always, as long as one opening audio function at this time
Device is put, earphone will hear music.So pop sound is almost output to audio together in the moment for opening audio power amplifier
Earphone, as long as audio sound ratio pop sound is slightly larger, human ear, which would not be felt, opens the pop sound that audio power amplifier generates.
With reference to Fig. 4, it is further used as preferred embodiment, the comparison feelings according to audio volume and audio threshold
Condition closes audio power amplifier, the step for specifically:
Judgement processing is carried out to the volume of audio in real time, when detecting that the volume of audio is less than or equal to audio threshold
Just close audio power amplifier.
Wherein, close audio power amplifier process be also it is the same, find opportunity closing accurately when audio data is being sent always
Audio power amplifier, as long as the sound ratio pop sound of audio is slightly larger at this time, human ear, which would not be felt, closes what audio power amplifier generated
Pop sound.
The specific embodiment of the invention is as follows:
Wherein, the step of opening audio power amplifier is specific as follows:
S11, insertion earphone, click play music；
S12, software start to send audio data to audio power amplifier, but audio power amplifier remains as the state of closing at this time,
Earphone will not hear any sound；
S13, software carry out judgement processing to the audio data for being sent to audio power amplifier, when judgement is sent to audio power amplifier
When audio volume reaches audio threshold, software opens audio power amplifier；
S14, normal play audio, earphone normally hear sound.
The step of closing audio power amplifier is specific as follows:
When S21, audio normal play to end or click pause play；
S22, software carry out judgement processing to the audio data of broadcasting after recognizing the state of above-mentioned steps S21, work as judgement
When the audio volume of broadcasting reaches audio threshold, software closes audio power amplifier；
The power down of S23, at this time audio power amplifier, earphone are mute.
With reference to Fig. 2, a kind of earphone pop sound of the present invention eliminates system, comprising:
Threshold setting unit, for setting audio threshold according to pop sound；
Power amplifier opening unit, for start play audio when, it is right according to the comparative situation of audio volume and audio threshold
Audio power amplifier is opened；
Power amplifier closing unit, for when audio finishes or suspends broadcasting, according to audio volume and audio threshold
Comparative situation closes audio power amplifier.
It is further used as preferred embodiment, the power amplifier opening unit is particularly for starting to play audio
When, judgement processing is carried out to the volume of audio in real time, until detecting that the volume of audio is greater than or equal to audio threshold Shi Caikai
Open audio power amplifier.
It is further used as preferred embodiment, the power amplifier closing unit in audio specifically, for finishing
Or when pause broadcasting, judgement processing is carried out to the volume of audio in real time, until detecting that the volume of audio is less than or equal to audio
Audio power amplifier is just closed when threshold value.
A kind of earphone pop sound cancellation element of the present invention, comprising:
Memory, for storing program；
Processor, for executing described program, described program makes the processor execute the earphone pop sound elimination
Method.
From the foregoing it can be that the present invention eliminates ear in such a way that real-time detection judges this pure software of audio volume
Machine POP sound completely dispenses with the component for increasing chip area or periphery, and cost of manufacture is greatly saved and reduces design hardly possible
Degree.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (7)
1. a kind of earphone pop sound removing method, which comprises the following steps:
According to pop sound, audio threshold is set；
When starting to play audio, according to the comparative situation of audio volume and audio threshold, audio power amplifier is opened；
When audio finishes or suspends broadcasting, according to the comparative situation of audio volume and audio threshold, to audio power amplifier
It is closed.
2. a kind of earphone pop sound removing method according to claim 1, it is characterised in that: described according to audio volume
With the comparative situation of audio threshold, audio power amplifier is opened, the step for specifically: the volume of audio is carried out in real time
Judgement processing just opens audio power amplifier when detecting that the volume of audio is greater than or equal to audio threshold.
3. a kind of earphone pop sound removing method according to claim 1, it is characterised in that: described according to audio volume
With the comparative situation of audio threshold, audio power amplifier is closed, the step for specifically: the volume of audio is carried out in real time
Judgement processing just closes audio power amplifier when detecting that the volume of audio is less than or equal to audio threshold.
4. a kind of earphone pop sound eliminates system characterized by comprising
Threshold setting unit, for setting audio threshold according to pop sound；
Power amplifier opening unit, for start play audio when, according to the comparative situation of audio volume and audio threshold, to audio
Amplifirer is opened；
Power amplifier closing unit, for audio finish or suspend broadcasting when, according to the comparison of audio volume and audio threshold
Situation closes audio power amplifier.
5. a kind of earphone pop sound according to claim 4 eliminates system, it is characterised in that: the power amplifier opening unit
Particularly for when starting to play audio, judgement processing is carried out to the volume of audio in real time, the volume until detecting audio
Audio power amplifier is just opened when more than or equal to audio threshold.
6. a kind of earphone pop sound according to claim 4 eliminates system, it is characterised in that: the power amplifier closing unit
Specifically, judgement processing is carried out to the volume of audio in real time, until detecting for when audio finishes or suspends broadcasting
The volume of audio just closes audio power amplifier when being less than or equal to audio threshold.
7. a kind of earphone pop sound cancellation element characterized by comprising
Memory, for storing program；
Processor, for executing described program, described program executes the processor such as any one of claims 1 to 3 institute
The earphone pop sound removing method stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032624.4A CN109660903B (en) | 2019-01-14 | 2019-01-14 | Earphone pop sound elimination method, system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032624.4A CN109660903B (en) | 2019-01-14 | 2019-01-14 | Earphone pop sound elimination method, system and device |
Publications (2)
| Publication Number | Publication Date |
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| CN109660903A true CN109660903A (en) | 2019-04-19 |
| CN109660903B CN109660903B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910032624.4A Active CN109660903B (en) | 2019-01-14 | 2019-01-14 | Earphone pop sound elimination method, system and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110175015A (en) * | 2019-05-29 | 2019-08-27 | Oppo广东移动通信有限公司 | A kind of method, apparatus and terminal device of the volume of controlling terminal equipment |
| CN112631668A (en) * | 2020-12-29 | 2021-04-09 | 深圳开立生物医疗科技股份有限公司 | Power management method and device, electronic equipment and storage medium |
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| CN112631668A (en) * | 2020-12-29 | 2021-04-09 | 深圳开立生物医疗科技股份有限公司 | Power management method and device, electronic equipment and storage medium |
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| Publication number | Publication date |
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| CN109660903B (en) | 2020-06-30 |
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Address after: 510663 unit 301, 302, 303, 3 / F, C1 area, 182 science Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangdong Province (office use only) Patentee after: Guangzhou Ankai Microelectronics Co.,Ltd. Address before: 510663 unit 301, 302, 303, 3 / F, C1 area, 182 science Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangdong Province (office use only) Patentee before: ANYKA (GUANGZHOU) MICROELECTRONICS TECHNOLOGY Co.,Ltd. |
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Address after: 510555 No. 107 Bowen Road, Huangpu District, Guangzhou, Guangdong Patentee after: Guangzhou Ankai Microelectronics Co., Ltd Address before: 510663 unit 301, 302, 303, 3 / F, C1 area, 182 science Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangdong Province (office use only) Patentee before: Guangzhou Ankai Microelectronics Co., Ltd |