Patent ID: 7251336
Filing Date: 2007-07-31
Classification: G01S,G10L,H04R

Abstract:
1. A method of locating a talker, comprising the steps of: receiving multiple audio signals from a microphone away characterized by a predetermined beampattern; detecting periods of speech activity in said audio signals and filtering in parallel said audio signals to optimize said predetermined beampattern for talker localization; calculating a localization estimate based on the filtered audio signals; discarding each localization estimate if calculated during a period where there is no speech activity; and verifying said localization estimate during said periods of speech activity; wherein said step of verifying includes storing a succession of localization estimates, counting occurrences of said localization estimates during said periods of speech activity and within a predetermined sample window and selecting any one of said occurrences which is repeated more than a predetermined threshold number of times within said window.