Display device, multi-channel echo cancellation circuit and multi-channel echo cancellation method
A technology for display equipment and echo cancellation, which is applied to TVs, color TVs, electrical components, etc., and can solve problems that affect echo cancellation effects, poor user experience, and affect voice interaction effects, etc.
Active Publication Date: 2022-06-28
HISENSE VISUAL TECH CO LTD
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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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[0034] In order to make the purpose and implementation of the present application clearer, the exemplary embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only the Some embodiments are claimed, but not all embodiments.
[0035] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the embodiments described next, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms are to be understood according to their ordinary and ordinary meanings.
[0036] The terms "first", "second", "third", etc. in the description and claims of this application and the above drawings are used to distinguish similar or homogeneous objects or entities, and are not necessarily meant to l...
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This embodiment provides a display device, a multi-channel echo cancellation circuit, and a multi-channel echo cancellation method. The display device in this embodiment includes a speaker, and the speaker includes a main channel and an auxiliary channel. The first audio plays the sound, and the secondary channel plays the sound according to the frequency-divided second audio. The first audio is obtained after performing the first processing on the original audio obtained from the playback service processor, and the second audio is performed on the first audio. After the second processing, the first processing and the second processing are different audio processing methods. The controller performs echo cancellation on the first echo and the second echo according to the echo reference signal corresponding to the second audio. Since the second audio includes the original audio, the related information of the first processing and the related information of the second processing, it can achieve the purpose of completely eliminating multi-channel echo, improve the effect of echo cancellation, and finally improve the effect of voice interaction and user experience .
Description
technical field [0001] The present application relates to the technical field of display devices, and 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 increasingly 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, when 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 removing the echo formed in the environment d...
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IPC IPC(8): G10L21/0208G10L21/02H04N5/64H04N21/439G09F9/33G09F9/35G03B31/00
CPCG10L21/0208H04N5/642H04N21/4398G09F9/35G09F9/33G03B31/00G10L2021/02082
Inventor 杨香斌
Owner HISENSE VISUAL TECH CO LTD