Multi-microphone array noise-reduction conference system

Abstract

The invention relates to a multi-microphone array noise-reduction conference system. The integrated design is adopted in the system; human voice and noise acquisition and noise-reduction processing can be carried out through existing or newly increased microphones; the microphones do not need to be additionally configured; and thus, the total owning cost is reduced. According to the system disclosed by the invention, noise-reduction processing can be carried out by adoption of a double-microphone noise-reduction or multi-microphone array noise-reduction scheme; furthermore, two different algorithms can be provided in the double-microphone noise-reduction scheme; three different algorithms can be provided in the multi-microphone array noise-reduction scheme; and, in the multi-microphone array noise-reduction scheme, different noise-reduction microphone selection methods can be provided for three conditions, namely a linear array, a rectangular array and a circular array.

Description

technical field [0001] The invention relates to the field of sound reinforcement, in particular to a multi-microphone array noise reduction conference system. Background technique [0002] The sound reinforcement system can be divided into four categories: indoor sound reinforcement system, hall sound reinforcement system, public address system and special conference system. Among them, the application scenarios of the special conference system are very common, the most common ones are: the party members of a general branch or party group gather together to hold a meeting to learn the theoretical knowledge of the party; the professional engineering personnel of a certain agency gather together for a meeting and assign new work tasks; The middle-level managers of the Education Bureau or the school hold a meeting in the conference room to convey and implement the spirit of the superior meeting. [0003] Due to the complex application environment of the conference system, nois...

AI Technical Summary

Problems solved by technology

[0011] When using dual microphones for noise reduction, there is only one algorithm, sometimes the effect is not good, and different algorithms need to be provided to obtain better results

[0012] When using a multi-microphone array for noise reduction, there is only one algorithm, sometimes the effect is not good, and different algorithms need to be provided to obtain better results

[0013] When using a multi-microphone noise reduction solution, there is only one method for selecting a noise reduction microphone, and sometimes the effect is not good, so it is necessary to provide different methods for selecting a noise reduction microphone to obtain better results

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