Patent ID: 8363850
Filing Date: 2013-01-29
Classification: G10L

Abstract:
1. An audio signal processing method for processing input audio signals of plural channels, comprising: calculating, by an audio signal processor, at least one feature quantity representing a difference between channels of input audio signals; selecting, by the audio signal processor, at least one weighting factor according to the feature quantity from at least one weighting factor dictionary prepared by learning beforehand; and subjecting, by the audio signal processor, the input audio signals of plural channels to signal processing, including noise suppression and weighting addition using the selected weighting factor, to generate an output audio signal, wherein the selecting includes calculating a distance between the feature quantity and a feature quantity of each of a plurality of centroids prepared beforehand to obtain a plurality of distances, and determining one centroid to which the distance is minimum relative to the plurality of distances, and the weighting factor corresponding to each of the plurality of centroids prepared beforehand.