1. Repositório Institucional - Universidade Federal de Uberlândia
  2. Faculdade de Engenharia Elétrica (FEELT)
  3. TESE - Engenharia Elétrica
Please use this identifier to cite or link to this item: https://repositorio.ufu.br/handle/123456789/14366
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dc.creatorCosta Filho, Acelino de Carvalho
dc.date.accessioned2016-06-22T18:38:18Z-
dc.date.available2006-03-21
dc.date.available2016-06-22T18:38:18Z-
dc.date.issued2005-02-11
dc.identifier.citationCOSTA FILHO, Acelino de Carvalho. Análise e síntese da fala por interpolação de ondas. 2005. 316 f. Tese (Doutorado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2005.por
dc.identifier.urihttps://repositorio.ufu.br/handle/123456789/14366-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico
dc.formatapplication/pdfpor
dc.languageporpor
dc.publisherUniversidade Federal de Uberlândiapor
dc.rightsAcesso Abertopor
dc.subjectProcessamento da falapor
dc.subjectCodificação da falapor
dc.subjectCodificação da fala por interpolação de ondaspor
dc.subjectTécnica WIpor
dc.subjectAnálise e síntese da fala por interpolação de ondaspor
dc.subjectSpeech processingeng
dc.subjectSpeech codingeng
dc.subjectWaveform interpolationeng
dc.subjectWaveform interpolation speech codingeng
dc.subjectWI speech codingeng
dc.subjectWI techniqueeng
dc.subjectWI analysis sinthesis of speecheng
dc.subjectProcessamento de sinaispor
dc.subjectCodificador de vozpor
dc.titleAnálise e síntese da fala por interpolação de ondaspor
dc.typeTesepor
dc.contributor.advisor1Carrijo, Gilberto Arantes
dc.contributor.advisor1Latteshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781864Y0por
dc.contributor.referee1Ramírez, Miguel Arjona
dc.contributor.referee1Latteshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4703974U6por
dc.contributor.referee2Vieira, Sibelius Lellis
dc.contributor.referee2Latteshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786619T0por
dc.contributor.referee3Flores, Edna Lúcia
dc.contributor.referee3Latteshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4703666H2por
dc.contributor.referee4Veiga, Antônio Cláudio Paschoarelli
dc.contributor.referee4Latteshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4782222Y6por
dc.description.degreenameDoutor em Ciênciaspor
dc.description.resumoThis doctoral dissertation addresses to study of waveform interpolation (WI) for speech coding, and the description, visualization and implementation of an algorithm to simulate a conventional WI system of analysis synthesis of speech signal, like portion of a WI system for coding - decoding that operates on the outer layer which is called of WI analysis synthesis system (standard). From this system researches are performed looking for improvement on the localization and extraction process of characteristic waveforms (CWs), that are obtained through interpolation at regular positions at the analysis stage. The propositions for improvement are presented, where part of them were implemented resulting on the system called the WI analysis synthesis system (with interpolation). The results of simulations and assessments, that indicate the performance of WI analysis synthesis system (standard) and WI analysis synthesis system (with interpolation) were presented with some speech signals. For assessment of the WI systems, the PESQ method were utilized to verify the perceptual quality of speech, and the SNRSEG-NCCF method, developed on this work, to verify the reconstruction of the waveforms and the phase delay per segment between the original and reconstructed speech signals. The WI analysis synthesis system (standard) presented good reconstruction of signal shown by the similarity between the time envelopes and the waveforms, and for the SNRSEG-NCCF measures. The WI system (standard) also presented a smaller phase displacement than the WI analysis synthesis system (with interpolation) and the perceptual quality of reconstructed speech ranged between "satisfactory" and "good" located on the band "communication quality" according the MOS rating. The preliminary version of the WI analysis synthesis system (with interpolation) presented better waveform reconstruction by segment and, for some parts of the signals, a better perceptual quality of speech than the WI analysis synthesis system s (standard), but with a larger phase displacement by segment between the originals and the reconstructed speech signals. In general the quality of reconstructed speech at the WI system (with interpolation) was lower than the WI system (standard), but the results indicate that the model has potential to present enhanced results by adjusting the interpolation process to improve the synchrony of signals.por
dc.publisher.countryBRpor
dc.publisher.programPrograma de Pós-graduação em Engenharia Elétricapor
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA ELETRICApor
dc.publisher.departmentEngenhariaspor
dc.publisher.initialsUFUpor
dc.orcid.putcode81755210-
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