Echo processing method, device and equipment and storage medium

A processing method and echo technology, applied in speech analysis, instruments, etc., can solve problems such as poor echo cancellation effect, and achieve the effect of improving the effect and applying the scene.

Active Publication Date: 2021-09-24
BEIJING UNISOUND INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an echo processing method, device, equipment and storage medium to solve the technical problem of poor echo cancellation effect of the echo processing method in the prior art

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  • Echo processing method, device and equipment and storage medium
  • Echo processing method, device and equipment and storage medium
  • Echo processing method, device and equipment and storage medium

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Embodiment Construction

[0053] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0054] figure 1 It is a flowchart of an embodiment of the echo processing method of the present invention, such as figure 1 As shown, the echo processing method in this embodiment may specifically include the following steps:

[0055] 100. According to the acquired delay information between the far-end signal and the initial near-end signal, align the far-end signal and the initial near-end signal to obtain an aligned signal;

[0056] In a specific implementation process, the delay information between the far-end signal and the near-end signal can be obtained by using any manner that can realize the estimation of the delay information between the far-end signal and the near-end signal.

[0057] Specifically, the est...

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Abstract

The invention relates to an echo processing method, device and equipment and a storage medium, and the method comprises the steps: aligning a far-end signal with an initial near-end signal according to the time delay information between the obtained far-end signal and the initial near-end signal, and obtaining an aligned signal; inputting the aligned signals into a frequency domain partitioning adaptive filter, and performing linear echo cancellation on the initial near-end signals to obtain near-end signals after linear echo cancellation; and inputting the near-end signal after the linear echo elimination and the far-end signal into a pre-trained residual echo processing model, and performing residual echo elimination on the near-end signal after the linear echo elimination to obtain the near-end signal after the residual echo elimination. According to the technical scheme of the invention, echo cancellation can be realized under the conditions of background noise, double talk, non-existing distortion and the like, and the echo cancellation effect and application scene are greatly improved.

Description

technical field [0001] The present invention relates to the technical field of echo cancellation, in particular to an echo processing method, device, equipment and storage medium. Background technique [0002] When the smart voice device is playing audio, the signal collected by the microphone includes both the signal of the target speaker (near-end signal) and the audio signal played by the speaker (far-end echo). In this case, the speech recognition module is almost can not work. It is usually necessary to introduce an echo cancellation method to eliminate the echo and protect the near-end voice signal from loss. [0003] In the prior art, an adaptive filter based on signal processing is usually used to first remove the linear echo part of the picked-up signal, and then pass a post-filter to suppress the background noise and the residual echo after echo cancellation, and further reduce the residual echo. inhibition. [0004] However, the adaptive filter can only simulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0232
CPCG10L21/0208G10L21/0232G10L2021/02082
Inventor 马金龙马凯池李庆龙关海欣梁家恩
Owner BEIJING UNISOUND INFORMATION TECH
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