A system and method for reducing the effect of background noise

摘要

Acoustical signals are collected with two microphones having different sensitivity to background noise. The level of background noise is estimated, and depending of the level of background noise, i) the amplification gain of the signals is modified before the signals are combined to a combined signal, or ii) the way of combining the signals is changed, to produce a signal that has less background noise than one of the microphones.