Patent ID: 6490556
Filing Date: 2002-12-03
Classification: G10L

Abstract:
A communication receiving device comprising:a density measurement device coupled to receive an input audio signal and provide an output indicating if the received input audio signal contains speech signals based upon a density of the input audio signal, wherein the density measurement device is further to sum an audio playback duration of the input audio signal into a bin in a histogram and shift all previous bins later in time with respect to a time of arrival of the input audio signal; a voice activity detector coupled to receive the input audio signal and provide an output indicating if the received input audio signal contains speech signals based upon energy levels of the input audio signal; a parser device coupled to receive the input audio signal and provide an output indicating if the received input audio signal contains speech signals based upon data provided with the input audio signal; and a classifier device coupled to the density measurement device, voice activity detector, and parser device for classifying the received input audio signal, wherein the classifier device is to use in the classifying an audio density percentage.