Voice echo cancellation method and device, equipment and storage medium

Abstract

The embodiment of the invention discloses a voice echo cancellation method and device, equipment and a storage medium. The method comprises the steps: acquiring a far-end voice signal of a preset time length through a playing buffer queue, and determining the time delay of a player according to the buffer queue length in the playing buffer queue; acquiring a near-end voice signal with a preset time length through an acquisition buffer queue, and determining the time delay of an audio collector according to the buffer queue length in the acquisition buffer queue; determining echo time delay according to the player time delay and the audio collector time delay; and performing echo cancellation on the near-end voice signal through the echo time delay and the far-end voice signal to obtain the near-end voice signal after echo cancellation. According to the technical scheme provided by the embodiment of the invention, the player time delay and the audio collector time delay are respectively determined through the cache queue length, so that the influence of the equipment type on time delay estimation can be avoided, the accurate acquisition of the echo time delay is realized, and the accuracy of echo cancellation is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of speech processing, and in particular, to a method, apparatus, device, and storage medium for echo cancellation of speech. Background technique [0002] In the multimedia scheduling conference, the player in the scheduling terminal will play the far-end voice signal, and then propagate and reflect in the space, and then be collected by the audio collector, which will seriously affect the call quality. Before sending, perform echo cancellation processing on the near-end voice signal collected by the audio collector, such as Figure 1A It is of great significance to improve the call quality. [0003] At present, the existing echo cancellation method mainly includes three steps: linear filtering, nonlinear echo suppression processing, and delay adjustment strategy; wherein, the delay adjustment strategy is the main step that affects the echo cancellation effect. In the prior art, the ec...

AI Technical Summary

Problems solved by technology

In the prior art, the echo delay is usually determined based on empirical estimates, such as Figure 1B As shown, however, there is a big difference in the echo delay of different types of dispatching terminal devices. For example, the echo delay of Android devices is generally about 100ms, and the echo delay of low-end devices is generally about 300ms; therefore, the echo delay of different types of dispatching terminals cannot be realized Accurate real-time estimation of time delay, which makes it impossible to accurately cancel the echo of the speech signal

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