Patent ID: 8948416
Filing Date: 2015-02-03
Classification: G10L,H03G,H04M

Abstract:
1. An audio-processing engine for use in a telephone, comprising: a first input configured to receive a first audio signal from a first microphone, wherein the first audio signal includes a first voice signal and a first noise signal; a second input configured to receive a second audio signal from a second microphone, wherein the second audio signal includes a second voice signal and a second noise signal; and a signal-processing module coupled to the first and second inputs and configured to compare an energy of the first audio signal to an energy of the second audio signal in order to discriminate between voice activity and noise in the first audio signal, wherein an energy of the first voice signal exceeds an energy of the first noise signal, or an energy of the second voice signal exceeds an energy of the second noise signal, and wherein the signal-processing module is further configured to identify time intervals of the first audio signal during which voice activity is present based on the comparison between the energy of the first audio signal and the energy of the second audio signal.