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Echo cancellation method and device, equipment and storage medium

A technology of echo cancellation and computing equipment, applied in the field of signal processing, can solve problems such as poor echo cancellation effect, and achieve the effect of improving echo cancellation effect

Active Publication Date: 2019-09-20
APOLLO INTELLIGENT CONNECTIVITY (BEIJING) TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an echo cancellation method, device, equipment, and storage medium to solve the problem in the prior art that the echo cancellation effect is poor due to the default time delay used in the echo cancellation process

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

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Embodiment Construction

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0066] figure 1 Schematic diagram of the application scenarios of the echo cancellation method provided by the embodiment of the present invention Figure 1 ,Such as figure 1 As shown, the application scenario may include a computing device 11, and the computing device 11 may include at least two voice interaction devices, for example figure 1 ...

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Abstract

The invention provides an echo cancellation method and device, equipment and a storage medium. The echo cancellation method includes the steps that when a voice interaction device used by a computing device is changed from a first voice interaction device to a second voice interaction device, the computing device estimates the time delay between reference signals played by the second voice interaction device and echo signals corresponding to the collected reference signals; and the computing device cancels the echo signals in original signals collected by the second voice interaction device according to the time delay obtained by estimation. The echo cancellation method and device, the equipment and the storage medium improve the echo cancellation effect.

Description

technical field [0001] The present invention relates to the field of signal processing, in particular to an echo cancellation method, device, equipment and storage medium. Background technique [0002] Currently, in speech recognition, echo cancellation processing, such as an acoustic echo cancellation (Acoustic EchoCancellation, AEC) algorithm, can be used to eliminate the echo in the collected speech signal. [0003] In the prior art, the echo cancellation processing is specifically to cancel the echo signal included in the voice signal collected by the microphone according to the time delay between the played reference signal and the echo signal corresponding to the reference signal collected by the microphone, In this way, the original signal sent by the speaker is obtained, and the echo caused by the superposition of the echo signal to the original signal is avoided. Usually, the time delay used for echo cancellation processing is a default time delay, that is, based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0216
CPCG10L21/0216G10L21/0224G10L25/27
Inventor 向伟陈建哲张腾飞
Owner APOLLO INTELLIGENT CONNECTIVITY (BEIJING) TECH CO LTD
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