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Echo cancellation method and device, computer readable storage medium and electronic device

An echo cancellation and echo technology, applied in speech analysis, instruments, etc., can solve problems affecting speech signal processing performance, etc., and achieve the effect of improving results and performance

Pending Publication Date: 2020-11-03
HAIER YOUJIA INTELLIGENT TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an echo cancellation method and device, a computer-readable storage medium, and an electronic device, so as to at least solve the problem in the related art that there is still a certain residual echo in the echo cancellation process, thereby affecting the performance of speech signal processing

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  • Echo cancellation method and device, computer readable storage medium and electronic device
  • Echo cancellation method and device, computer readable storage medium and electronic device
  • Echo cancellation method and device, computer readable storage medium and electronic device

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Embodiment 1

[0031] This embodiment provides an echo cancellation system, figure 2 is a functional schematic diagram (1) of an echo cancellation system provided according to an embodiment of the present invention, as figure 2 As shown, the echo cancellation system in this embodiment includes:

[0032] The elimination unit 102 includes a preset first neural network model, and the elimination unit is configured to obtain output information according to the sound source signal, the echo estimation information and the first neural network model; the elimination unit 102 is also configured to eliminate the sound according to the output information the echo signal in the source signal;

[0033] Wherein, the sound source signal is an audio signal received by an audio input channel of the terminal, and the echo estimation information is used to indicate an estimated value for estimating the echo signal in the sound source signal;

[0034] The first neural network model is obtained by training ...

Embodiment 2

[0109] This embodiment provides an echo cancellation method, Figure 7 is a flowchart of an echo cancellation method provided according to an embodiment of the present invention, such as Figure 7 As shown, the echo cancellation method in this embodiment includes:

[0110] S202, estimate the echo signal in the sound source signal according to the reference signal and the echo detection information, so as to obtain the echo estimation information; wherein, the sound source signal is the audio signal received by the audio input channel of the terminal, and the reference signal is the audio output of the terminal The audio signal in the channel, the echo detection information is used to indicate the probability of the presence of an echo signal in the sound source signal;

[0111]S204, obtain output information according to the sound source signal, the echo estimation information and the preset first neural network model, and eliminate the echo signal in the sound source signal ...

Embodiment 3

[0179] This embodiment provides a method for training a neural network model, which is used to implement the training of the first neural network model recorded in Embodiment 2, Figure 8 is a flowchart of a training method for a neural network model provided according to an embodiment of the present invention, such as Figure 8 As shown, the training method of the neural network model in this embodiment includes:

[0180] S302, obtain a sample sound source signal; wherein, the sample sound source signal is obtained by superimposing the sample far-end signal and the sample near-end signal, and the sample far-end signal is used to indicate the sample echo signal;

[0181] S304, determine the gain coefficient of the sample sound source signal, and use the gain coefficient as the sample output information;

[0182] S306, establish a first neural network model according to the relationship between the sample sound source signal and the sample output information.

[0183] It shou...

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Abstract

The invention provides an echo cancellation method and device, a computer readable storage medium and an electronic device, and the method comprises the steps: estimating an echo signal in a sound source signal according to a reference signal and echo detection information, so as to obtain echo estimation information, wherein the sound source signal is an audio signal received by an audio input channel of the terminal, the reference signal is an audio signal in an audio output channel of the terminal, and the echo detection information is used for indicating the probability that an echo signalexists in the sound source signal; obtaining output information according to the sound source signal, the echo estimation information and a preset first neural network model, and eliminating an echosignal in the sound source signal according to the output information. According to the invention, the method solves a problem that the processing performance of a voice signal is affected because a certain residual echo still exists in an echo cancellation process in the related technologies, so as to achieve the effects of improving the echo cancellation effect and improving the processing performance of the voice signal.

Description

technical field [0001] The present invention relates to the field of audio signal processing, and in particular, to an echo cancellation method and device, a computer-readable storage medium, and an electronic device. Background technique [0002] Voice signal processing technology is a key technology in the field of human-computer interaction at present; in the process of voice signal processing, the echo cancellation algorithm can eliminate the self-playing sound signal received by the device microphone, which is the key to the whole sound signal processing and voice enhancement. The key technology plays an extremely important role in the back-end speech recognition. [0003] figure 1 is a schematic diagram of the echo cancellation method provided according to the related art, such as figure 1 As shown, the echo cancellation method in the related art mainly adopts the echo cancellation method in the open source tool Web Real-Time Communication (WebRTC), that is, the esti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L25/30
CPCG10L21/0208G10L21/0216G10L25/30G10L2021/02082
Inventor 马路赵培苏腾荣
Owner HAIER YOUJIA INTELLIGENT TECH (BEIJING) CO LTD