Broad phonetic class definition driven by phone confusions

Lopes, Carla; Perdigão, Fernando

Publication

Broad phonetic class definition driven by phone confusions

2012-07-23Journal article

dc.contributor.author	Lopes, Carla
dc.contributor.author	Perdigão, Fernando
dc.date.accessioned	2025-10-27T13:50:18Z
dc.date.available	2025-10-27T13:50:18Z
dc.date.issued	2012-07-23
dc.description.abstract	Intermediate representations between the speech signal and phones may be used to improve discrimination among phones that are often confused. These representations are usually found according to broad phonetic classes, which are defined by a phonetician. This article proposes an alternative data-driven method to generate these classes. Phone confusion information from the analysis of the output of a phone recognition system is used to find clusters at high risk of mutual confusion. A metric is defined to compute the distance between phones. The results, using TIMIT data, show that the proposed confusion-driven phone clustering method is an attractive alternative to the approaches based on human knowledge. A hierarchical classification structure to improve phone recognition is also proposed using a discriminative weight training method. Experiments show improvements in phone recognition on the TIMIT database compared to a baseline system.	eng
dc.description.sponsorship	Carla Lopes would like to thank the Portuguese foundation: Fundação para a Ciência e a Tecnologia for the PhD Grant (SFRH/BD/27966/2006).
dc.identifier.citation	Lopes and Perdigão EURASIP Journal on Advances in Signal Processing 2012, 2012:158
dc.identifier.doi	10.1186/1687-6180-2012-158
dc.identifier.issn	1687-6180
dc.identifier.uri	http://hdl.handle.net/10400.8/14379
dc.language.iso	eng
dc.peerreviewed	yes
dc.publisher	Springer Science and Business Media LLC
dc.relation	DETECÇÃO DE EVENTOS ACÚSTICO-FONÉTICOS PARA RECONHECIMENTO AUTOMÁTICO DE FALA
dc.relation.ispartof	EURASIP Journal on Advances in Signal Processing
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Digital storage
dc.subject	Linguistics
dc.subject	Speech recognition
dc.title	Broad phonetic class definition driven by phone confusions	eng
dc.type	journal article
dspace.entity.type	Publication
oaire.awardTitle	DETECÇÃO DE EVENTOS ACÚSTICO-FONÉTICOS PARA RECONHECIMENTO AUTOMÁTICO DE FALA
oaire.awardURI	http://hdl.handle.net/10400.8/13033
oaire.citation.issue	1
oaire.citation.title	EURASIP Journal on Advances in Signal Processing
oaire.citation.volume	2012
oaire.fundingStream	FARH
oaire.version	http://purl.org/coar/version/c_970fb48d4fbd8a85
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