Method for suppressing noise in an acoustic signal for a multi-microphone audio device operating in a noisy environment

摘要

The method involves denoising two parts of a spectrum with implementation of an adaptive algorithm estimator by denoising and exploiting a character of a useful signal from a sensor to another sensor between first sub-array sensors by a first adaptive algorithm estimator (14) for a high frequency part and by denoising by prediction of noise from the sensor to another sensor between second sub-array sensors by a second adaptive algorithm estimator (18) for a low frequency part. The spectrum is reconstructed (22) by combining signals delivered after denoising the two parts of the spectrum. The character is a predictable character. The sensors of the first sub-array of sensors are unidirectional sensors oriented along direction of a speech source.