Data synchronization method, device and system, echo cancellation method and system

Abstract

The invention provides a data synchronization method, a data synchronization device and a data synchronization system, as well as an echo cancellation method and an echo cancellation system. According to the data synchronization method, the first N byte data taken is copied from a received frame buffering area to a playing queue and a reference frame buffering area, so as to ensure that the first N byte data in the playing queue and the first N byte data in the reference frame buffering area are synchronous and consistent; since an audio playing thread and an audio recording thread are started simultaneously, the first N byte data in the playing queue and the second N byte data in the audio recording thread are also synchronous. Thus, the first N byte data in the reference frame buffering area and the second N byte data in the audio recording thread are synchronous and are simultaneously put into an echo cancellation thread, thereby being synchronous in the echo cancellation thread. According to the data synchronization method, and the problem of data desynchrony of a first terminal and a second terminal is solved well. Therefore, the problem that echoes are heard at the first terminal is solved better. As a result, the user experience is improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a data synchronization method, device and system, and an echo cancellation method and system. Background technique [0002] In instant voice communication applications, both terminals usually use external speakers to play sound, which will inevitably generate echo. Assume that there are two users talking through the first terminal and the second terminal respectively. Such as figure 1 As shown, first, the sound from the first terminal is transmitted to the second terminal, and the second terminal uses a speaker to emit the sound, and at this time, the microphone of the second terminal will collect the sound from the speaker, and then send it back to the first terminal , user A who uses the first terminal will hear the same voice as he just said, which is the echo. [0003] In order to eliminate this echo and improve user experience, a software "acoustic echo canceller" is a...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a data synchronization method, device and system, and an echo cancellation method and system. The data synchronization method provided by the present invention can well solve the problem that the data of the first terminal and the second terminal are not synchronized, and can further Better use of the acoustic echo canceller to solve the problem of the first terminal hearing the echo of its own speech and improve user experience

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