Patent ID: 9219973
Filing Date: 2015-12-22
Classification: G10L,H04S

Abstract:
1. A method for filtering a multi-channel audio signal having a speech channel and at least one non-speech channel, to improve intelligibility of speech determined by the signal, said method including the steps of: (a) determining at least one attenuation control value indicative of a measure of similarity between speech-related content determined by the speech channel and speech-related content determined by at least one non-speech channel of the multi-channel audio signal, where the attenuation control value is generated based on at least one speech enhancement likelihood value for the non-speech channel, and the speech enhancement likelihood value is generated based on at least one speech likelihood value indicative of likelihood that the speech channel is indicative of speech and at least one speech likelihood value indicative of likelihood that the non-speech channel is indicative of speech, such that the attenuation control value is determined at least partially by each said speech likelihood value and a likelihood or expected value indicated by the speech enhancement likelihood value; and (b) attenuating at least one non-speech channel of the multi-channel audio signal in response to the at least one attenuation control value.