Display device, multichannel echo cancellation circuit and multichannel echo cancellation method

Abstract

The embodiment provides a display device, a multichannel echo cancellation circuit and a multichannel echo cancellation method, the display device comprises a loudspeaker, the loudspeaker comprises a main sound channel and an auxiliary sound channel, the main sound channel plays sound according to a first audio after frequency division, and the auxiliary sound channel plays sound according to a second audio after frequency division. The first audio is obtained by executing first processing on an original audio obtained from the playing service processor, the second audio is obtained by executing second processing on the first audio, and the first processing and the second processing are different audio processing modes. And the controller performs echo cancellation on the first echo and the second echo according to the recovery reference signal corresponding to the second audio. The second audio comprises the original audio, the related information of the first processing and the related information of the second processing, so that the purpose of completely eliminating the echo of multiple sound channels can be achieved, the echo elimination effect is improved, the voice interaction effect is finally improved, and the user experience is improved.

Description

technical field [0001] The present application relates to the technical field of display devices, in particular to a display device, a multi-channel echo cancellation circuit and a multi-channel echo cancellation method. Background technique [0002] With the rapid development of speech recognition technology, the application scenarios of speech interaction are becoming more and more common. The distance of human-machine voice dialogue is not limited to the near field. The use of microphone array technology can increase the distance of human-computer interaction and realize the function of far-field speech recognition. In the far-field speech recognition scenario, while the microphone collects the target human voice, it also collects the echo caused by the audio played by the smart device. Therefore, it is necessary to perform echo cancellation on the collected audio signal. Echo cancellation is the process of eliminating the echo formed in the environment due to the audio...

AI Technical Summary

Problems solved by technology

[0005] The present application provides a display device, a multi-channel echo cancellation circuit and a multi-channel echo cancellation method, which are used to solve the problem that in a display device with multiple channels, the current direct echo cancellation solution can only perform the main channel The reference signal is recovered, and the reference signal cancellation of other channels is discarded, which affects the effect of echo cancellation, and ultimately affects the effect of voice interaction, resulting in poor user experience.

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