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Microphone gain adjustment method, device, system and storage medium

A gain adjustment and microphone technology, applied in transducer circuits, sensors, signal processing, etc., can solve problems such as distortion of music sound signals, difficulty for users to wake up smart speakers, etc., and achieve the effect of avoiding nonlinear distortion.

Inactive Publication Date: 2019-12-24
星络智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly provides a microphone gain adjustment method, which can overcome the existing problem that when the volume of music played by the smart speaker is high, the music sound signal after the gain amplification process produces nonlinear distortion, which makes it difficult for the user to wake up the smart speaker.

Method used

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  • Microphone gain adjustment method, device, system and storage medium
  • Microphone gain adjustment method, device, system and storage medium
  • Microphone gain adjustment method, device, system and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0041] figure 1 It is a flow chart of a microphone gain adjustment method provided by an embodiment of the present invention. The microphone gain adjustment method is applied to a smart speaker. A microphone and a speaker are installed on the smart speaker box. The microphone gain adjustment method includes steps S100, S200 and S300.

[0042] Step S100: Obtain the volume value of the sound signal played by the speaker.

[0043] Specifically, the volume value of the sound signal currently played by the speaker is acquired.

[0044] Step S200: Determine whether the volume value is greater than a preset volume threshold.

[0045] Specifically, it is judged whether the volume value of the sound signal currently played by the speaker is greater than a preset volume threshold.

[0046] Further specifically, the step of setting the preset volume threshold includes: controlling the speaker to play the sound signal of the first volume value, so that the average volume of the sound si...

Embodiment 2

[0053] figure 2 It is a flow chart of a microphone gain adjustment method provided by another embodiment of the present invention. On the basis of including the above-mentioned steps S100, S200, and S300, the microphone gain adjustment method also includes the following steps S400 and S500. Steps S400 and S500 are Executed before step S100.

[0054] Step S400: Obtain the sound type played by the speaker.

[0055] Specifically, the type of sound played by the speaker includes music, system prompt sound, or sound played according to preset text.

[0056] Step S500: Query and obtain the preset volume threshold corresponding to the sound type according to the sound type and the pre-stored volume threshold table.

[0057] Specifically, different sound types correspond to the same or different preset volume thresholds. There is a volume threshold table pre-stored in the smart speaker. The volume threshold table includes the sound type and the preset volume threshold corresponding...

Embodiment 3

[0061] image 3 It is a schematic structural diagram of a microphone gain adjustment device provided in another embodiment of the present invention. The microphone gain adjustment device includes a volume acquisition module 100 , a volume judgment module 200 and a gain adjustment module 300 .

[0062] The volume acquisition module 100 is used to acquire the volume value of the sound signal played by the loudspeaker;

[0063] The volume judging module 200 is used for judging whether the volume value is greater than the preset volume threshold;

[0064] The gain adjustment module 300 is used to reduce the preset microphone gain according to the volume value of the playing sound signal when the volume value is greater than the preset volume threshold, and set the reduced target gain as the current microphone gain.

[0065] The specific implementation of the microphone gain adjustment device provided by the embodiment of the present invention is the same as the specific implement...

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Abstract

The invention discloses a microphone gain adjustment method, a device, a system and a storage medium. The method comprises the following steps: acquiring a volume value of a sound signal played by a loudspeaker; judging whether the volume value is greater than a preset volume threshold; and if yes, performing reduction processing on the preset microphone gain according to the volume value of the played sound signal, and setting the target gain obtained after reduction as the current microphone gain. According to the microphone gain adjustment method provided by the invention, when the volume value of the sound signal played by the loudspeaker is greater than the preset volume threshold value, the preset microphone gain is reduced, the smaller microphone gain is set as the current microphone gain, non-linear distortion generated after the sound signal with larger volume emitted by the loudspeaker is picked up and amplified by the microphone is avoided, the accurate user sound signal canbe obtained, and the effective awakening of the intelligent sound box is further ensured.

Description

technical field [0001] The present invention relates to the technical field of voice control, in particular to a microphone gain adjustment method, device, system and storage medium. Background technique [0002] For the smart speakers that have appeared in recent years, the smart speaker box is equipped with a microphone and a speaker. When the speaker plays music, the user speaks to the smart speaker. At this time, the microphone picks up the music sound signal and the user's voice signal. In order to obtain the user's voice signal, It is necessary to adopt an echo cancellation algorithm to filter out the music sound signal to obtain the user sound signal. However, the existing smart speaker usually performs gain amplification processing on the sound signal picked up by the microphone. The gain value is fixed and the gain value is relatively large. , the obtained amplified music sound signal will appear truncation phenomenon, resulting in nonlinear distortion. However, t...

Claims

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Application Information

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IPC IPC(8): H04R3/00
CPCH04R3/00H04R2430/00
Inventor 凌华东
Owner 星络智能科技有限公司
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