Call state detection method and device

A technology of call state and detection method, which is applied in two-way sound reinforcement telephone system, line monitoring circuit, etc., can solve the problem of low accuracy of double-talk state detection, and achieve the effect of improving accuracy

Active Publication Date: 2017-03-15
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the accuracy of dual-talk state detection is low due to inaccurate estimation of the amplitu...

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  • Call state detection method and device
  • Call state detection method and device
  • Call state detection method and device

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Embodiment Construction

[0034] Reference will now be made in detail to the 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 invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0035] Please refer to figure 1 , which shows a schematic structural diagram of a voice communication system involved in the present invention. The system includes: several terminals 120 . The several terminals 120 are connected through a communication network.

[0036] Optionally, the communication network is a wired network or a wireless network.

[0037] Wherein, several 120 all support v...

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Abstract

The invention relates to a call state detection method and device. The method comprises the steps of obtaining a far end signal; superposing an ultrasonic signal on the far end signal to obtain a hybrid signal, and playing the hybrid signal; obtaining a near end signal collected by a microphone unit; determining a first signal segment in the hybrid signal and a second signal segment in the near end signal according to the ultrasonic signals; calculating a correlation value between the first signal segment and the second signal segment; and when the correlation value is smaller than a preset correlation value threshold, determining that a call state is a double-talk state. According to the scheme, the hybrid signal and the near end signal are aligned through the ultrasonic signal superposed in the far end signal and the ultrasonic signal contained in the near end signal collected by the microphone unit, and whether the call state is the double-talk state or not is judged through the correlation value between the aligned near end signal and hybrid signal, thereby improving the accuracy of detecting the double-talk state.

Description

technical field [0001] The invention relates to the technical field of speech processing, in particular to a method and device for detecting a call state. Background technique [0002] During a voice call, the call state in which the local party also emits sound while the opposite end is making sound is called the double-talk state. In order to improve the call quality, the terminal needs to detect the current call state, and when it detects that the current call state is a double-talk state, perform specific processing on the sound signal during the call. [0003] In a voice call, echo refers to the phenomenon that the remote signal sent from the call peer to the terminal is played by the speaker unit of the terminal, then reflected to the microphone unit of the terminal, collected by the microphone unit and then transmitted back to the call peer. Among them, the signal from the far-end signal to the microphone unit after reflection is called the echo signal, and the near-...

Claims

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Application Information

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IPC IPC(8): H04M1/82H04M9/08
CPCH04M1/82H04M9/08
Inventor 梁俊斌
Owner TENCENT TECH (SHENZHEN) CO LTD
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