Patent ID: 9313572
Filing Date: 2016-04-12
CPC Classification: G10L,H04R

Claim Text:
1. A method of detecting a user's voice activity in a mobile device comprising: generating by a voice activity detector (VAD) a VAD output based on (i) acoustic signals received from microphones included in the mobile device and (ii) data output by an inertial sensor that is included in an earphone portion of the mobile device, the inertial sensor to detect vibration of the user's vocal chords modulated by the user's vocal tract based on vibrations in bones and tissue of the user's head, wherein generating the VAD output comprises: detecting voiced speech included in the acoustic signals, detecting the vibration of the user's vocal chords from the data output by the inertial sensor, computing the coincidence of the detected speech in acoustic signals and the vibration of the user's vocal chords, and setting the VAD output to indicate that the user's voiced speech is detected if the coincidence is detected and setting the VAD output to indicate that the user's voiced speech is not detected if the coincidence is not detected.