The Seventh ISCA Tutorial and Research Workshop on Speech Synthesis

Kyoto, Japan
September 22-24, 2010

Crafting Small Databases for Unit Selection TTS: Effects on Intelligibility

H. Timothy Bunnell

Center for Pediatric Auditory and Speech Sciences, Nemours Biomedical Research, USA

When creating unit selection voices for personal use, e.g., for use in communication aids, it is often desirable to keep the speech database as small as possible. The present study examines the effects of database size and database content on the intelligibility of synthetic speech produced by the latest version of the ModelTalker TTS system. Intelligibility here is measured objectively with an open response SU sentence task. While previous work has examined similar questions, that work has typically been with an eye toward completeness of the database coverage and using tasks that assess perceptual quality, but not explicitly intelligibility.

Index Terms: speech synthesis, unit selection, database size, database content, intelligibility, personal synthetic voices

Full Paper

Bibliographic reference.  Bunnell, H. Timothy (2010): "Crafting small databases for unit selection TTS: effects on intelligibility", In SSW7-2010, 40-44.