公开(公告)号：EP0797875A1

公开(公告)日：1997-10-01

申请号：EP96933012.0

申请日：1996-09-13

申请人： Interval Research Corporation ,  Ngo, John-Thomas, Calderon ,  Bhadkamkar, Neal Ashok

发明人： Ngo, John-Thomas Calderon ,  Bhadkamkar, Neal Ashok

IPC分类号： G10L21 ,  G06K9 ,  H03H21 ,  H04B1 ,  H04B3 ,  H04R3 ,  H04S7 ,  H04R25

CPC分类号： G06K9/0057 ,  H03H21/0012 ,  H03H2021/0034 ,  H04R3/005 ,  H04R25/407 ,  H04R2201/403

摘要： This invention is a component of an adaptive filter signal processor whose purpose is to separate a mixture of signals received by each of a plurality of transducers. This invention estimates the relative propagation delays among the transducers for each source. First, it randomly generates a fixed number of sets of delay parameters (220), called a population (230). Each set is processed by an instananeous-performance calculator (240), to generate an instantaneous-performance value which is added to a cumulative performance value (360). The set with the greatest cumulative performance value is transferred to the adaptive filter signal processor. New parameter sets are generated at random. Whenever a parameter set is found whose instantaneous performance value exceeds that of the set in the population with the least instantaneous performance value, it is incorporated into the population. The set with the least cumulative performance value is deleted from the population.