Low rate sinusoidal coding of speech using an improved phase matching algorithm

Sassan Ahmadi, Andreas Spanias

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new phase model for low-bit rate sinusoidal coding of speech is presented. Short-time sinusoidal phases are approximated using a combination of linear prediction, spectral sampling, delay compensation, and phase correction techniques. The algorithm is different than phase compensation methods proposed for source-system LPC in that it has been tailored to sinusoidal representation of speech. Performance analysis on a large speech database indicates considerable improvement in temporal and spectral signal matching as well as improved subjective quality of the reconstructed speech. The extra parameters used for representation of the sine wave phases require a small number of bits. The method can be applied to enhance phase matching in low-bit rate sinusoidal coders, where underlying sine wave amplitudes are extracted from an all-pole model.

Original languageEnglish (US)
Title of host publicationIEEE Workshop on Speech Coding for Telecommunications Proceedings
Editors Anon
Place of PublicationPiscataway, NJ, United States
PublisherIEEE
Pages35-36
Number of pages2
StatePublished - 1997
EventProceedings of the 1997 IEEE Workshop on Speech Coding for Telecommunications - Pocono Manor, PA, USA
Duration: Sep 7 1997Sep 10 1997

Other

OtherProceedings of the 1997 IEEE Workshop on Speech Coding for Telecommunications
CityPocono Manor, PA, USA
Period9/7/979/10/97

ASJC Scopus subject areas

  • Engineering(all)

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