Hands-free communication systems need to isolate a single talker contribution in a distant talking situation and in the presence of environmental noises or other acoustic events. Sound source localization is an essential part of this process. However, localization methods that are actually based on time delay estimation (TDE) yield worse performances as reverberation time increases. As the majority of the technologies adopting hands-free systems are applied into bounded environment, a strategy to limit the effect of reverberation is due. The Optimal Line Selection algorithm demonstrated to perform well in case of localization in different reverberant conditions. In this paper the behavior of this estimator will be examined in case of cepstral prefiltering. ©2008 IEEE.
Prefiltering techniques on consistent peak selection for talker position estimation in reverberant rooms / Cirillo, Albenzio; Parisi, Raffaele; Uncini, Aurelio. - (2008), pp. 81-84. (Intervento presentato al convegno 2008 Hands-free Speech Communication and Microphone Arrays, HSCMA 2008 tenutosi a Trento; Italy nel May 6-8, 2008) [10.1109/HSCMA.2008.4538693].
Prefiltering techniques on consistent peak selection for talker position estimation in reverberant rooms
CIRILLO, ALBENZIO;PARISI, Raffaele;UNCINI, Aurelio
2008
Abstract
Hands-free communication systems need to isolate a single talker contribution in a distant talking situation and in the presence of environmental noises or other acoustic events. Sound source localization is an essential part of this process. However, localization methods that are actually based on time delay estimation (TDE) yield worse performances as reverberation time increases. As the majority of the technologies adopting hands-free systems are applied into bounded environment, a strategy to limit the effect of reverberation is due. The Optimal Line Selection algorithm demonstrated to perform well in case of localization in different reverberant conditions. In this paper the behavior of this estimator will be examined in case of cepstral prefiltering. ©2008 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.