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dc.contributor.authorMacho, D
dc.contributor.authorNadeu Camprubí, Climent
dc.contributor.authorJancovic, P
dc.contributor.authorRozinaj, G
dc.contributor.authorHernando Pericás, Francisco Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2016-07-14T08:21:23Z
dc.date.available2016-07-14T08:21:23Z
dc.date.issued1999
dc.identifier.citationMacho, D., Nadeu, C., Jancovic, P., Rozinaj, G., Hernando, J. Comparison of time & frequency filtering and cepstral-time matrix approaches in ASR. A: European Conference on Speech Communication and Technology. "EUROSPEECH '99: 6th European Conference on Speech Communication and Technology: September 5-9, 1999: Budapest, Hungary". Budapest: 1999, p. 77-80.
dc.identifier.urihttp://hdl.handle.net/2117/88763
dc.description.abstractIn current speech recognition systems, speech is represented by a 2-D sequence of parameters that model the temporal evolution of the spectral envelope of speech. Linear transformation or filtering along both time and frequency axes of that 2-D sequence are used to enhance the discriminative ability and robustness of speech parameters in the HMM pattern-matching formalism. In this paper, we compared two recently reported approaches which operate on the sequence of logarithmically compressed mel-scaled filter-bank energies: the first approach - TIFFING (TIme and Frequency FilterING) - applies FIR filters to that 2-D sequence along both axes, while the second one - CTM (Cepstral Time Matrix) - uses the DCT to compute a set of parameters in the 2-D transformed domain. They are compared in several ways: (1) analytically, using Fourier transformation, (2) statistically and (3) performing recognition tests with clean and noisy speech.
dc.format.extent4 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la parla i del senyal acústic
dc.subject.lcshSpeech processing systems
dc.subject.lcshFilters and filtration
dc.titleComparison of time & frequency filtering and cepstral-time matrix approaches in ASR
dc.typeConference report
dc.subject.lemacProcessament de la parla
dc.subject.lemacFiltres i filtració
dc.contributor.groupUniversitat Politècnica de Catalunya. VEU - Grup de Tractament de la Parla
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.identifier.drac2346627
dc.description.versionPostprint (published version)
local.citation.authorMacho, D.; Nadeu, C.; Jancovic, P.; Rozinaj, G.; Hernando, J.
local.citation.contributorEuropean Conference on Speech Communication and Technology
local.citation.pubplaceBudapest
local.citation.publicationNameEUROSPEECH '99: 6th European Conference on Speech Communication and Technology: September 5-9, 1999: Budapest, Hungary
local.citation.startingPage77
local.citation.endingPage80


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