A voice synthesis system from Digital that accepted serial ASCII text and converted it into audible speech. It was used in Touch-tone telephone response systems as well as for voice-output for visually handicapped users.
For example, the percentage of intelligibility for high-quality synthesizers, such as DECtalk (a high-quality form of synthetic speech manufactured by Digital Equipment Corporation) in a single-word intelligibility task ranged from 81.7% correct with an open-response format (Mirenda & Beukelman, 1987) to 96.7% correct with a closed-response format (Greene, Manous, & Pisoni, 1984, cited in Koul & Hanners, 1997).
Fonix Corporation's (BULLETIN BOARD: FONX), DECtalk text-to-speech technology has been integrated into the latest type-to-talk product from ZYGO, a provider of augmentative communication systems to physically disabled people.
According to Kirk Feller, Fonix's vice president and general manager for consumer applications, the company's recent purchase of DECtalk TTS technology from Force computers signals a strategic move into the assistive technology market.
Participants were assigned randomly in equal numbers to one of three speech modes: Natural Speech, Digital Equipment's DECtalk TTS synthesizer, or Sound Blaster's Monologue for Windows TTS synthesizer.