Third European Conference on Speech Communication and Technology

Berlin, Germany
September 22-25, 1993


Estimation of Source Parameters by Frequency Analysis

Luis C. Oliveira

AT&T Bell Laboratories, Murray Hill, NJ, USA

The new generation of text-to-speech systems needs the ability to control the voice quality of the synthesized speech by varying the excitation source. This feature is fundamental to improve naturalness and to synthesize female or child voices. The variation of the voice quality is also important when trying to synthesize expression. The problem involves two aspects: the ability to control the source parameters of the speech synthesizer and the possibility of extracting these parameters from natural speech. This paper describes a source model based on the poly-nomial model for the glottal flow suggested by Rosenberg [9] that has an exact representation in the frequency domain, and an automated procedure to estimate its parameters from natural speech.

Full Paper

Bibliographic reference.  Oliveira, Luis C. (1993): "Estimation of source parameters by frequency analysis", In EUROSPEECH'93, 99-102.