A filtering method and device, equipment, and medium for echo cancellation

Abstract

The application discloses a filtering method, device, equipment and medium for echo cancellation. The method is iteratively executed in multiple rounds, and the method at least includes: obtaining the far-end audio data and the near-end audio data of the current round, and performing time-domain segmentation on the far-end audio data of the current round to obtain multiple far-end audio data of the current round Time-domain audio block; according to the adaptive echo cancellation parameters of the current round, estimate the respective responses to the multiple far-end time-domain audio blocks of the current round; determine the response to the current round of near-end audio data and the respective responses The filtering result of the near-end audio data; wherein, the current round of adaptive echo cancellation parameters is obtained according to at least one previous round of adaptive echo cancellation parameters and the energy update of the far-end audio data. This application actively divides the far-end audio data into blocks, and accordingly adaptively filters the near-end audio data, which can effectively eliminate the echo generated during voice communication between the two or more parties at the far end and the near end, and helps to ensure voice communication quality.

Description

technical field [0001] The present application relates to the technical field of voice communication, and in particular to a filtering method, device, device, and medium for echo cancellation. Background technique [0002] Voice communication is a relatively common interaction scenario between users, for example, two users talk through a mobile phone, and multiple users conduct a remote conference through a teleconferencing terminal. In this type of voice communication scenario, for any user at one end, it is often necessary to both send voice to the other end and answer the voice from the other end to itself. The local end of any user can be called the near end. The opposite end can be called the remote end. [0003] The user generally uses the microphone provided by the mobile phone or the teleconferencing terminal to send voice to the other end, and through the earpiece or speaker provided by these devices, the user listens to the voice sent by the other end. However, w...

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Problems solved by technology

[0006] Embodiments of the present application provide a filtering method, device, device, and medium for echo cancellation, which are used to solve the following technical problems in the prior art: distortion of microphones, earpieces, or speakers, and room confusion often lead to the failure of existing solutions. Poor echo cancellation

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