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Score Function for Voice Activity Detection

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor Universitat de Vic. Grup de Recerca en Tecnologies Digitals
dc.contributor International Conference on Non-Linear Speech Processing NOLISP (2009 : Vic)
dc.contributor.author Solé-Casals, Jordi
dc.contributor.author Martí i Puig, Pere
dc.contributor.author Reig Bolaño, Ramon
dc.contributor.author Zaiats, Vladimir
dc.date.accessioned 2013-01-16T13:47:39Z
dc.date.available 2013-01-16T13:47:39Z
dc.date.created 2010
dc.date.issued 2010
dc.identifier.citation Solé casals, Jordi [et al.]. "Score Function for Voice Activity Detection". A: International conference on non-linear speech processing. "Advances in nonlinear speech processing : international conference on nonlinear speech processing, NOLISP 2009 : Vic, Spain, June 25-27, 2009 : revised selected papers". Vic: Springer, 2009, p. 76-83. ca_ES
dc.identifier.isbn 9783642115080
dc.identifier.uri http://hdl.handle.net/10854/1988
dc.description.abstract In this paper we explore the use of non-linear transformations in order to improve the performance of an entropy based voice activity detector (VAD). The idea of using a non-linear transformation comes from some previous work done in speech linear prediction (LPC) field based in source separation techniques, where the score function was added into the classical equations in order to take into account the real distribution of the signal. We explore the possibility of estimating the entropy of frames after calculating its score function, instead of using original frames. We observe that jf signal is clean, estimated entropy is essentially the same; but if signal is noisy transformed frames (with score function) are able to give different entropy if the frame is voiced against unvoiced ones. Experimental results show that this fact permits to detect voice activity under high noise, where simple entropy method fails. ca_ES
dc.format application/pdf
dc.format.extent 8 p. ca_ES
dc.language.iso eng ca_ES
dc.publisher Springer ca_ES
dc.rights (c) Springer (The original publication is available at www.springerlink.com)
dc.rights Tots els drets reservats ca_ES
dc.subject.other Processament de la parla ca_ES
dc.title Score Function for Voice Activity Detection ca_ES
dc.type info:eu-repo/semantics/conferenceObject ca_ES
dc.rights.accesRights info:eu-repo/semantics/closedAccess ca_ES

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