Bit Allocation based in parametric residual envelope for  adaptive predictive coders

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RECERCAT Home > Universitat Politècnica de Catalunya > Documents de recerca > View document

To access the full text documents, please follow this link: http://hdl.handle.net/2117/85865

dc.contributor	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor	Universitat Politècnica de Catalunya. VEU - Grup de Tractament de la Parla
dc.contributor.author	Moreno Bilbao, M. Asunción
dc.date	1987
dc.identifier.citation	Moreno, A. Bit Allocation based in parametric residual envelope for adaptive predictive coders. A: European Conference on Speech Technology. "ECST 1987: European Conference on Speech Technology: Edinburgh, Scotland, UK, September, 1987". Edinburgh, Scotland: 1987, p. 2133-2136.
dc.identifier.uri	http://hdl.handle.net/2117/85865
dc.language.iso	eng
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject	Wave equation
dc.subject	Equacions d'ona
dc.title	Bit Allocation based in parametric residual envelope for adaptive predictive coders
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	This work describes a coder that works at bit rates of 9.6Kbits/s to 32 Kb/ s. Basically the system consist on a waveform DPCM coder with an improvement in the quantizer. This new feature consist on quantizing the prediction error taking into account its waveform characteristics. The prediction residual of a voiced signal is characterized by an energy sychronous with pitch. The envelope of this signal holds this information and can be used to quantize properly the prediction error. In this work a parametric version of the residual envelope is used in two ways: Dynamic bit assignment in time domain and adaptive control of the dynamic range of the quantizer.
dc.description.abstract	Peer Reviewed

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