An echo detector includes means (34) for forming a set of distance measures between pitch estimates of a first signal and pitch estimates of a second signal at predetermined delays with respect to the first signal. A selector (36) selects a distance measure from the set corresponding to the highest similarity between the first and second signals. A classifier (32) classifies the second signal as including an echo if the selected distance measure has a predetermined relation to a similarity threshold (TH)
申请公布号
WO2007067125(A2)
申请公布日期
2007.06.14
申请号
WO2006SE01358
申请日期
2006.11.28
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);TRUMP, TOENU;ERIKSSON, ANDERS