Method for processing and restoring audio signal and system thereof

Abstract

The invention discloses a method for processing and restoring an audio signal and a system thereof. The method comprises the following steps: using a plurality of audio signal acquisition devices to respectively collect the audio signals from sound sources; determining whether the sound sources exist in the each audio signal acquisition device according to the collected multi-channel audio signals; respectively arranging processing curves to the each channel of the audio signals according to existence of the sound sources in the each audio signal acquisition device; using the arranged processing curves of the each channel of the audio signals to respectively process collected multi-channel audio signals and transmitting the processed multi-channel audio signals; using a plurality of audio signal play apparatuses to respectively receive the corresponding audio signals and playing the received audio signals. Through multi-channel audio acquisition and a processing scheme, restoration of a remote sound field in a video communication system can be realized. Simultaneously, the corresponding audio signal processing curves are used to respectively process the each channel of the audio signals so that the audio signals in a meeting can be accurately and really restored at a far-end.

Description

technical field [0001] The present invention relates to the field of video communication, and more specifically, to a method and system for processing and restoring audio signals. Background technique [0002] Currently, in the field of video communication, audio signals are restored and intercommunicated based on traditional standard two-channel (stereo) or multi-channel technology. Among them, the two-channel technology only relies on the left and right channels to transmit audio, and the sound will appear thin and not authentic enough in a video conference with a large venue space. Multi-channel technology (for example, 5.1-channel and 7.1-channel, etc.) is more suitable for film and television applications due to the addition of surround sound effects. High-definition video conferencing is a face-to-face communication between two parties. It is important to restore the sound field of the opposite end as realistically as possible. [0003] However, the existing multi-ch...

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Problems solved by technology

[0003] However, the existing multi-channel technology cannot effectively restore the sound field of the local conference site as truly as possible at the far end

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