Unlock instant, AI-driven research and patent intelligence for your innovation.

Signal processing method and device and computer storage medium

A signal processing device and signal processing technology, applied in voice analysis, instruments, sensor components, etc., can solve the problem of reducing the computing workload of multiple microphones

Active Publication Date: 2020-02-07
XIAN ZHONGXING NEW SOFTWARE
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a signal processing method, device and computer storage medium, which effectively solves the echo and howling phenomenon that is easily generated when the high-frequency resonance peak of the speaker or microphone is low, and also reduces Reduced computational effort in multi-microphone designs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal processing method and device and computer storage medium
  • Signal processing method and device and computer storage medium
  • Signal processing method and device and computer storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] see Figure 8 , which shows a signal processing method provided by an embodiment of the present invention, the method is applied to a signal processing device having at least one speaker and at least one microphone, and the method may include:

[0060] S801: Receive a first audio signal and play the first audio signal by the at least one speaker;

[0061] S802: Acquire at least one echo estimation signal corresponding to the first audio signal according to at least one speaker model, at least one microphone model, and the first audio signal; wherein the at least one speaker model is based on the at least one speaker Obtained, the at least one microphone model is obtained based on the at least one microphone;

[0062] S803: Use the at least one microphone to receive a second audio signal; wherein the second audio signal includes an echo signal generated by the first audio signal output by the at least one speaker and received through the at least one microphone;

[006...

Embodiment 2

[0106] Based on the same inventive concept of the foregoing embodiments, see Figure 13 , which shows a detailed flow of a signal processing method provided by an embodiment of the present invention, combined with Figure 10 An application example of a four-speaker and single-microphone circuit structure 100 is shown, and the detailed process may include:

[0107] S1301: Extract a digital signal from the front end of the speaker group 1001 to obtain a first audio signal;

[0108] S1302: Input the first audio signal into the first speaker model 1003a, the second speaker model 1003b, the third speaker model 1003c and the fourth speaker model 1003d respectively to perform acoustic response processing, and obtain an acoustic response signal of each speaker;

[0109] S1303: Obtain a reference signal of each speaker according to the acoustic response signal of each speaker in the speaker group 1001 and the first delay and attenuation information corresponding to the acoustic respon...

Embodiment 3

[0178] Based on the same inventive concept of the foregoing embodiments, see Figure 21 , which shows the composition of an information processing device 210 provided by an embodiment of the present invention, the signal processing device 210 may include: at least one speaker 2101, at least one microphone 2102, a first receiving part 2103, and a first acquiring part 2104 , the second receiving part 2105 and the second acquiring part 2106, wherein,

[0179] The first receiving part 2103 is configured to receive a first audio signal and play the first audio signal by the at least one speaker;

[0180] The first obtaining part 2104 is configured to obtain at least one echo estimation signal corresponding to the first audio signal according to at least one speaker model, at least one microphone model and the first audio signal; wherein the at least one speaker a model is derived based on the at least one loudspeaker, and the at least one microphone model is derived based on the a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a signal processing method and device, and a computer storage medium. The method comprises the steps: receiving a first audio signal, and enabling at least one loudspeaker to play the first audio signal; obtaining at least one echo estimation signal corresponding to the first audio signal according to at least one loudspeaker model, at least one microphonemodel and the first audio signal, wherein the at least one loudspeaker model is obtained based on at least one loudspeaker, and the at least one microphone model is obtained based on at least one microphone; receiving a second audio signal by using at least one microphone, wherein the second audio signal comprises an echo signal which is output by the at least one loudspeaker and is generated bythe first audio signal received by the at least one microphone; and subtracting at least one echo estimation signal corresponding to the first audio signal from the second audio signal to obtain an audio signal after echo processing.

Description

technical field [0001] The present invention relates to the technical field of audio signal processing, in particular to a signal processing method, device and computer storage medium. Background technique [0002] During a call, people can sometimes hear their own voice, mainly because the sound played by the speaker of the other party is received and transmitted back by its microphone (Microphone, MIC), which is what people usually call an echo. caused by reasons. Therefore, echoes generally exist in scenarios involving speakers and MIC duplex, such as current terminal calls, personal computer (Personal Computer, PC) Internet calls, personal digital assistant (Personal Digital Assistant, PDA) Internet calls, edge Record and broadcast scenes, etc. [0003] Echo cancellation technology, as the name suggests, is to process the sound played by the speaker received by the MIC, and only retain the sound played by the non-speaker. At present, the most commonly used echo cancel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2420/03H04M9/08G10L21/0216
Inventor 崔腾飞
Owner XIAN ZHONGXING NEW SOFTWARE