Quality enhancement of sinusoidal transform vocoders

Wen-Whei Chang*, D. Y. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The authors present quality enhancement of sinusoidal transform coders (STCs) via the development of parametric models. The benefits of the Bark spectrum are explored for use in the design of perceptual coding of the sine-wave amplitudes. According to the results, the proposed approach provides a uniform perceptual fit across the spectrum. To enhance the accuracy of phase representation, noncausal all-pole modelling of the vocal system is also discussed. Experimental results indicate that the use of the developed new parametric models allows the STC to improve the phase accuracy as well as the synthetic speech quality.

Original languageEnglish
Pages (from-to)379-383
Number of pages5
JournalIEE Proceedings: Vision, Image and Signal Processing
Issue number6
StatePublished - 1 Dec 1998

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