Parrot

Charles Fox

Guillaume Vitte

Maurice Charbit

Jacques Prado

This method comprises steps of: a) partitioning () the spectrum of the noisy signal into a HF part and a LF part; b) operating denoising processes in a differentiated manner for each of the two parts of the spectrum with, for the HF part, a denoising by prediction of the useful signal from one sensor to the other between sensors of a first sub-array (R), by means of a first adaptive algorithm estimator (), and, for the LF part, a denoising by prediction of the noise from one sensor to the other between sensors of a second sub-array (R), by means of a second adaptive algorithm estimator (); c) reconstructing the spectrum by combining together () the signals delivered after denoising of the two parts of the spectrum, respectively; and d) selectively reducing the noise () by an Optimized Modified Log-Spectral Amplitude gain, OM-LSA, process.

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

This method comprises the following steps in the frequency domain:

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Paris, France

Charles Fox