Multi-channel sound amplification system and method for adjusting volume of loudspeaker
A loudspeaker and multi-channel technology, which is applied in the field of multi-channel sound reinforcement system that adaptively adjusts the loudspeaker volume based on environmental noise, and can solve the problem of loudspeaker output volume competing with each other
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[0104] like Figure 5 as shown, Figure 5 It is a schematic diagram of a specific application scenario of the present invention. In the figure, a railway station waiting hall with four waiting rooms is taken as an example. At this time, N=4, and each waiting room can be regarded as a subsystem. Each waiting room has its own loudspeaker, microphone, multi-channel echo cancellation module, noise sound pressure level acquisition module and volume gain acquisition module. In this embodiment, the microphone is preferably a microphone; for example, the microphone in the waiting room 1 can collect passengers' speech, noise caused by walking, air-conditioning noise, and echo signals played by all the speakers in the waiting room. Likewise, microphones in other waiting rooms pick up local noise and echo signals from all subsystems. Among them, the microphone is a preferred example of the microphone; if the single-channel echo cancellation technology is simply used, the echoes played...
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