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dc.contributor.authorRodríguez Fonollosa, José Adrián
dc.contributor.authorMasgrau Gómez, Enrique José
dc.contributor.authorCarbonell, Rafael M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationFonollosa, José A. R., Masgrau, E. Cuantificación vectorial adaptativa de la voz. A: Simposium Nacional de la Unión Científica Internacional de Radio. "IV simposium nacional de Unión Científica Internacional de Radio: libro de actas: Santander, 25-27 de septiembre de 1989". Santander: 1989, p. 316-320.
dc.description.abstractVector quantization (VQ) is a simultaneous quantization of a sequence of samples or vector. This process allows to malee effective use of the interrelations among the different vector components and performance arbitrarily close to the ultimate rate-distortion can be achieved by VQ if the vector dimension is high enough. Nevertheless, the exponential growth in complexity forces the use of low -dimensionality VQ in practica! systems. In this case sorne kind of adaptation is necessary to obtain adequate performance. Adaptive Multistage VQ (AMSVQ) [1] is a simple method that allows to redesign the quantizer as it is used, thus increasing its robustness and performance. In this paper, it is shown the close relation between the proposed adaptation algorithm and the methods usually employed to design the vector quantizers. Then sorne results are presented in which the AMSVQ reduce the complexity and improve the performance of previous VQ-based schemes of quantizing the LPC parameters.
dc.format.extent5 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.titleCuantificación vectorial adaptativa de la voz
dc.typeConference report
dc.contributor.groupUniversitat Politècnica de Catalunya. VEU - Grup de Tractament de la Parla
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorFonollosa, José A. R., Masgrau, E.
upcommons.citation.contributorSimposium Nacional de la Unión Científica Internacional de Radio
upcommons.citation.publicationNameIV simposium nacional de Unión Científica Internacional de Radio: libro de actas: Santander, 25-27 de septiembre de 1989

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