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Voice processing method and device

A sound processing and sound signal technology, applied in the field of sound processing methods and devices, can solve the problems of low target sound source pickup accuracy, serious aliasing noise, etc., and achieve the effect of improving experience and ensuring sound quality

Active Publication Date: 2018-12-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a sound processing method and device to solve the problem of serious aliasing noise when the target sound signal is picked up in a directional way, which causes the problem of low pick-up accuracy of the target sound source

Method used

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Examples

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example 1

[0140] Layout situation with 1 microphone each on the top front, back and bottom of the terminal. The following is an example of a layout with one microphone on the top front and back of the terminal and one microphone on the bottom left side, for example Figure 2B As shown, at this time, no matter whether there is a backward sound signal before, the above sound processing method may also include the following steps:

[0141] Step 36: If the front camera is used to shoot, the time delay difference positioning can also be performed on the sound signals collected by the bottom left microphone and the top front microphone to obtain the upper and lower azimuth angles of the sound signals; When setting the angle, it is determined that the sound signal of the yth frame contains secondary noise signals. The secondary noise signal is a noise signal located in front of the front camera and outside the boundary of the camera range of the front camera. If it is determined that the sou...

example 2

[0145] In the case of a layout in which there is one microphone on the front and back of the top and one microphone on the left and right sides of the bottom, for convenience of reference, the two microphones at the bottom may also be called the third microphone and the fourth microphone. Such as Figure 2C As shown, at this time, no matter whether there is a backward sound signal before, the above sound processing method may also include the following steps:

[0146] Step 37: If the front camera is used to shoot, the delay difference positioning can also be performed on the sound signals collected by the bottom left microphone and the top front microphone to obtain the upper and lower azimuth angles of the sound signals; if the upper and lower azimuth angles are greater than the first preset When setting the angle, it is determined that the sound signal of the yth frame contains secondary noise signals. The secondary noise signal is a noise signal located in front of the fro...

example 3

[0173] Layout situation with 1 microphone each on the top front, back and bottom of the terminal. The following is an example of a layout with one microphone on the top front and back of the terminal and one microphone on the bottom left side, for example Figure 2B As shown, at this time, regardless of whether there is a backward sound signal before, the above-mentioned device may further include a secondary noise filtering module 706, configured to perform the following steps:

[0174] If the acquisition module 701 detects that the terminal uses the front camera to take pictures, it can also perform time delay difference positioning for the sound signals collected by the bottom left microphone and the top front microphone to obtain the upper and lower azimuth angles of the sound signals; At the first preset angle, it is determined that the sound signal in the yth frame contains a secondary noise signal. The secondary noise signal is a noise signal located in front of the fr...

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Abstract

The invention discloses a voice processing method and device. The method is applied to a terminal having two microphones on the top, the two microphones are located on the front and the back of the terminal respectively, and the method is applied to a non-video call scene. The method comprises acquiring a voice signal by using the two microphones when it is detected that the camera of the terminalis in a capture state; calculating a sound pressure difference between the two microphones according to a first predetermined algorithm based on the acquired voice signal; determining whether the sound pressure difference satisfies a sound source direction determination condition; if so, determining whether a backward voice signal is included in the voice signal according to the sound pressure difference, wherein the backward voice signal is a voice signal whose sound source is located behind the camera; if it is determined that the voice signal includes the backward voice signal, filtering out the backward voice signal in the voice signal. In this way, the method locates the sound source based on the sound pressure difference in a low SNR scene and can improve the pickup accuracy of thesound source within an imaging range.

Description

technical field [0001] The present invention relates to the technical field of terminals, in particular to a sound processing method and device. Background technique [0002] Speech processing equipment will inevitably be interfered by various noises when collecting or inputting speech signals. In actual voice communication systems, common noises include stationary noise and directional interference sound sources. These noises are likely to interfere with the target sound signal and seriously reduce the auditory comfort and intelligibility of the collected sound. Traditional noise estimation and single-channel speech enhancement algorithms are not ideal for suppressing directional interference noise. For this reason, it is necessary to design some systems with interference noise suppression capabilities according to the actual situation, so as to achieve the purpose of directional pickup of the target voice and the ability to suppress other noises. [0003] Most of the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L25/21G01S5/18H04M1/72403
CPCG10L21/0208G10L21/0216G10L25/21G01S5/18G10L2021/02165H04M1/6008H04M2250/52H04M1/72403G10L2021/02166H04R3/005
Inventor 王乐临王提政
Owner HUAWEI TECH CO LTD
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