Patent ID: 6529869
Filing Date: 2003-03-04
Classification: H04R

Abstract:
A method of optimizing a reception of an acoustic signal, comprising the steps of:converting the acoustic signal received by at least two microphones into electric output signals; imposing a phase lag on at least one of the electric output signals; superimposing signals derived from the electric output signals; deriving voice parameters from the electric output signals; comparing the voice parameters with predetermined voice parameters; identifying at least one sound source as a voice source with a corresponding probability value, the corresponding probability value being determined as a function of the comparison of the voice parameters with the predetermined voice parameters; selecting the identified at least one sound source as the voice source; and delaying a phase of at least one of the electric signals before superimposing the signals derived from the electric output signals, the phase delay being a function of a location of the at least two microphones such that a maximum reception for the superimposed signals derived from the electric output signals is obtained at a location of the selected voice source.