Publication Abstract

Quatieri, T.F. and McAulay, R.J., Speech Transformations Based on a Sinusoidal Representation, IEEE Trans. Acoustics, Speech, and Signal Processing, Vol. ASSP-34, No. 6, December 1986, pp. 1449-1464.

Abstract

In this paper a new speech analysis/synthesis technique is presented which provides the basis for a general class of speech transformations including time-scale modification, frequency scaling, and pitch modification. These modifications can be performed with a time-varying change, permitting continuous adjustment of a speaker's fundamental frequency and rate of articulation. The method is based on a sinusoidal representation of the speech production mechanism which has been shown to produce synthetic speech that preserves the waveform shape and is perceptually indistinguishable from the original. Although the analysis/synthesis system was originally designed for single-speaker signals, it is also capable of recovering and modifying nonspeech signals such as music, multiple speakers, marine biologic sounds, and speakers in the presence of interferences such as noise and musical backgrounds.