Speech Transformations Based on a Sinusoidal Representation
Abstract
In this report, a new speech analysis/synthesis technique is presented which provides the basis for a general class of speech transformation 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 that has been shown to produce synthetic speech that preserves the waveform shape and is essentially perceptually indistinguishable from the original. Although the analysis/synthesis system originally was designed for single-speaker signals, it is equally 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. Keywords: Sinusoidal models; Sine waves; Timer varying modifications; Joint time frequency modifications.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 16, 1986
- Accession Number
- ADA169740
Entities
People
- Robert J. Mcaulay
- Thomas E. Quatieri
Organizations
- Massachusetts Institute of Technology