Method and device for detecting double-ended calls

Abstract

The invention provides a double-end communication detection method and device. The double-end communication detection method comprises the steps of counting a difference between a high-frequency component of a filtering coefficient of a main filter and a high-frequency component of a filtering coefficient of a cache filter; if the difference is beyond a preset threshold, determining that the mainfilter and the cache filter are currently in the double-end communication state; and when determining that the difference is beyond the threshold, copying the filtering coefficient of the cache filterand resetting the filtering coefficient of the main filter. According to the embodiment of the invention, the problems of time delay and high complexity of the existing method of detecting the double-end communication are solved, and the technical effect of determining whether the double-end communication exists simply and accurately is realized.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method and device for double-ended call detection. Background technique [0002] In a communication system, the voice signal played by the loudspeaker will be transmitted to the microphone to be picked up by the multiple reflections and superposition of the space environment to form an acoustic echo. The existence of acoustic echo will seriously affect the quality of full-duplex calls, and in severe cases, it may even cause sound cuts and sentence breaks or even call failure. Acoustic echo cancellation technology is used to suppress or eliminate echo, the purpose is to improve real-time call quality. [0003] Considering that for full-duplex conversations, there will be single-ended conversations and double-ended conversations, and different echo suppression methods need to be adopted for double-ended conversations and single-ended conversations. Therefore, determining...

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned method 1, since the energy changes slowly, there is a certain delay in judging the double-ended state, and the calculation amount of the above-mentioned method 2 is very large, and the algorithm complexity is high

[0008] For the problems of time delay and high complexity in the existing methods of detecting double-ended conversations, no effective solution has been proposed so far

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