Sound reinforcement system and microphone channel data selection method

Abstract

The invention relates to the field of audio data processing, in particular to a sound reinforcement system and a microphone channel data selection method, which greatly reduce the influence of reverberation and noise, facilitate the expansion of the coverage range and ensure the sound reinforcement quality. The microphone channel data selection method comprises the following steps: a sampling rate and a sampling bit number of data acquisition of each microphone channel are configured; the analog signals collected by the microphones are converted into digital signals according to the configured sampling rate and sampling digits, and the digital signals are sent to the audio processing module; the audio processing module is used for processing the digital signal, selecting corresponding microphone channel data according to a processing result, and sending the corresponding microphone channel data to the audio output module; and the audio output module converts the processed digital signal into an analog signal and sends the analog signal to sound equipment for output. The sound amplification device is suitable for sound amplification of places such as classrooms, meeting rooms and lecture halls.

Description

technical field [0001] The invention relates to the field of audio data processing, in particular to a sound reinforcement system and a microphone channel data selection method. Background technique [0002] In the existing sound reinforcement system, when multiple microphones are used for data collection, due to the characteristics of long-distance microphones, when collecting the required voice data, the noise of multiple microphones is also collected at the same time, resulting in fusion output. At the same time, due to the time difference and azimuth difference of the data collected by multiple microphones, the reverberation of the fused sound data is very large. [0003] The existing solution is to use technologies such as microphone arrays, based on microphone array algorithms or to directly fuse and output multi-channel microphone data. [0004] However, based on the microphone array, its coverage is limited, which is not conducive to expanding the coverage due to th...

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Problems solved by technology

[0004] However, based on the microphone array, its coverage is limited, which is not conducive to expanding the coverage due to the influence of the hardware array; and the direct fusion of multiple microphones not only cannot eliminate the reverberation, but also increases the noise and aggravates the reverberation, resulting in amplification. The sound effect is worse than when using a single channel

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