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Time delay estimation method and device and electronic equipment

A delay estimation and time technology, applied in the field of communication, can solve the problems of echo leakage, slow response to delay changes, and inability of echo cancellation to work properly, so as to avoid echo leakage and improve response speed.

Active Publication Date: 2019-05-07
TENCENT TECH (SHENZHEN) CO LTD
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Problems solved by technology

[0005] However, in many electronic devices, the delay changes in real time even during the same call. If the response to the delay change is too slow, echo cancellation will not work properly during the delay change, resulting in echo leakage. Therefore, How to improve the response speed to delay changes needs to be solved urgently

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  • Time delay estimation method and device and electronic equipment
  • Time delay estimation method and device and electronic equipment
  • Time delay estimation method and device and electronic equipment

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[0032] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0033] At present, in order to eliminate the far-end speech signal in the sound signal, there are usually two delay estimation methods: time stamp method and binary spectral line method.

[0034] Among them, the time stamp method uses adding a time stamp to the signal to obtain the time delay, that is, the sound signal collected by the microphone lags behind the far-end voice signal output...

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Abstract

The invention relates to a time delay estimation method and device and electronic equipment. The time delay estimation method comprises the steps that an acoustical signal collected by a microphone and a far-end voice signal output by a loudspeaker are acquired; the acoustical signal and the far-end voice signal are taken as fingerprint input signals respectively, and dynamic change feature extraction of audio energy is carried out on the fingerprint input signals to obtain an audio fingerprint of the acoustical signal and an audio fingerprint of the far-end voice signal; fingerprint comparison is carried out on the audio fingerprint of the acoustical signal and the audio fingerprint of the far-end voice signal to obtain time delay estimation results. The time delay estimation method and device and the electronic equipment have the advantages that the response speed of the time delay estimation can be increased, and the problem that echo leakage caused by the fact that the echo cancellation cannot be performed normally during time delay change is avoided.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a time delay estimation method, device and electronic equipment. Background technique [0002] With the development of communication technology, more and more application scenarios involve the call process, for example, the user uses a smartphone to make a video / voice call, or the user uses a video conferencing system to make a call during a conference call, or is participated by a chat robot The sessions involved in the session system. [0003] During the call, the client of one of the callers first receives the far-end voice signal output by the speaker, and then collects the sound signal by the microphone, and finally outputs the collected sound signal for the client of the other caller to receive. [0004] If the sound signal collected by the microphone includes not only the near-end voice signal (generated by the user speaking during the call), but also ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/03G10L21/0208G10L25/51
Inventor 王天宝
Owner TENCENT TECH (SHENZHEN) CO LTD
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