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Echo cancellation method and device

A technology of echo cancellation and data buffer, which is applied in the computer field, can solve problems such as poor echo cancellation effect and mismatch of echo cancellation data volume, and achieve the effect of ensuring the effect

Pending Publication Date: 2022-04-05
GUIYANG LONGMASTER INFORMATION & TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] This application provides an echo cancellation method and device to solve the problems of existing echo cancellation data mismatch and poor echo cancellation effect

Method used

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  • Echo cancellation method and device

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Embodiment Construction

[0034] The following describes the application in detail, and the features and advantages of the application will become more clear and definite along with these descriptions.

[0035] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left" and "right" etc. indicate orientation or position The relationship is an orientation or positional relationship based on the working state of the application, which is only for the convenience of describing the application and simplifying the description, rather than indica...

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Abstract

According to the echo cancellation method and device, far-end data and near-end data are cached through a proper buffer, the delay of a near-end data buffer is set according to the delay of the far-end data buffer, and it is ensured that the delays of the far-end data buffer and the near-end data buffer are consistent. And then the far-end data interface is called firstly and then the near-end data interface is called, so that a far-end signal in near-end data is ensured to be received by the echo cancellation module before being processed, and the echo canceller is ensured to run well so as to ensure the echo cancellation effect.

Description

technical field [0001] The present application relates to the field of computer technology, and in particular to an echo cancellation method and device. Background technique [0002] In the field of audio real-time communication, acoustic echo will cause great interference to the call, and it is necessary to eliminate the echo through certain means. The echo is caused by the sound recorded by the far-end device being played by the near-end playback device, then recorded by the near-end recording device, and then sent to the far-end through the network for playback. Generally, the echo cancellation module of the VOIP ((VoiceOver Internet Protocol)) client has two interfaces, one is used to receive the far-end audio data used as a reference, and the other is used to receive and process the near-end audio data. The far-end audio converts the time-domain signal into a frequency-domain signal through Fourier transform, and then finds the corresponding audio in the near-end audio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M9/08H04M7/00
Inventor 胡海周平王恒
Owner GUIYANG LONGMASTER INFORMATION & TECHNOLOGY CO LTD
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