Demo of a vowel synthesis algorithm
developed by Ingo Hertrich at the University of Tuebingen

Working principle:
Formants are generated as sinusoids that are amplitude- and phase-modulated by the fundamental frequency. (Abstract)

Examples:
Vowel /o/
Vowel /e/
Fromant transition and vowel of the syllable /ba/
Fromant transition and vowel of the syllable /da/
Stop consonant-diphthong-sequence /bai/

The algorithm works in an additive way. Here is an example of the various fundamental frequency and formant components of the stop consonant-vowel syllable /da/:

Fundamental frequency component

/da/__F0

first formant

/da/__F1

second formant

/da/__F2

third formant

/da/__F3

fourth formant

/da/__F4

fifth formant

/da/__F5

 

For a more detailed description see: J. Acoust. Soc. Am. 106 (1999), 2988-2990

Anybody who is interested in using this program may contact:

Ingo Hertrich, PhD
Department of Neurology
University of Tuebingen
Hoppe-Seyler-Str. 3
72076 Tuebingen, Germany

E-mail: ingo.hertrich@uni-tuebingen.de