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A method, system and device for canceling earphone pop sound

A headphone and audio technology, applied in earphone/headphone accessories, headphone mechanical/electronic switches, amplifiers, etc., can solve problems such as increasing production costs, increasing chips, and increasing design difficulty, saving production costs and eliminating headphones. POP sound, the effect of reducing the difficulty of design

Active Publication Date: 2020-06-30
ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in any case, solving the pop sound problem from the hardware point of view will inevitably increase the area of ​​the chip or the peripheral components of the chip, increasing the production cost and increasing the design difficulty

Method used

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  • A method, system and device for canceling earphone pop sound
  • A method, system and device for canceling earphone pop sound
  • A method, system and device for canceling earphone pop sound

Examples

Experimental program
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specific Embodiment

[0045] Among them, the steps to turn on the audio power amplifier are as follows:

[0046] S11, insert the earphone, click to play music;

[0047] S12. The software starts to send audio data to the audio power amplifier, but the audio power amplifier is still closed at this time, and the earphone will not hear any sound;

[0048] S13, the software judges and processes the audio data sent to the audio power amplifier, and when it is judged that the audio volume sent to the audio power amplifier reaches the audio threshold, the software turns on the audio power amplifier;

[0049] S14. The audio is played normally, and the earphone hears the sound normally.

[0050] The procedure to turn off the audio amplifier is as follows:

[0051] S21. When the audio is normally played to the end or clicked to pause the playback;

[0052] S22. After the software recognizes the state of the above step S21, it judges and processes the played audio data, and when it is judged that the played...

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Abstract

The invention discloses an earphone pop sound eliminating method, system and device. The method comprises the following steps: according to a pop sound, an audio threshold is set; when an audio startsto be played, an audio power amplifier is turned on according to a comparison condition of audio volume and the audio threshold; and when the playing of the audio is finished or paused, the audio power amplifier is turned off according to the comparison condition of the audio volume and the audio threshold. The pop sound of an earphone is eliminated in a pure software mode of detecting and judging the audio volume in real time, so that the chip area or the peripheral components do not need to be enlarged or added, the manufacturing cost is greatly reduced, and the design difficulty is reduced. The earphone pop sound eliminating method, system and device can be widely applied to the field of audio processing.

Description

technical field [0001] The present invention relates to the technical field of audio processing, in particular to a method, system and device for canceling earphone pop noise. Background technique [0002] For headphones and general handheld devices, there is generally no negative voltage, and the working voltage will be between 0-vdd, so the common-mode voltage of the audio signal is vdd / 2, that is, the audio power amplifier will have a bias voltage, which is As a result, a bias voltage will be generated or disappeared when the audio power amplifier is powered on or discharged. This bias voltage is directly added to the DC-blocking capacitor in the audio circuit, which will cause the DC-blocking capacitor to charge or discharge, and this charging or discharging action is reflected on the earphone load as a popping sound that can be heard by the human ear ( pop sound). [0003] The current effective method of reducing the pop sound is generally considered from the hardware...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10H04R3/00
CPCH04R1/1041H04R3/00H04R2201/10H04R2430/00
Inventor 罗继胡胜发
Owner ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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