wts701 Winbond Electronics Corp America, wts701 Datasheet - Page 2

• Manufacturer Part Number: wts701
• Description: Winbond Single-chip Text-to-speech Processor
• Manufacturer: Winbond Electronics Corp America

WTS701
1. GENERAL DESCRIPTION
The WTS701 is a high quality, fully integrated, single-chip Text-to-Speech solution that is ideal for use
in applications such as automotive appliances, GPS/navigation systems, cellular phones and other
portable products or accessories. The WTS701 product accepts ASCII (Unicode and Big5 for
Mandarin) input via a SPI port and converts it to spoken audio via an analog output or digital CODEC
output.
The WTS701 integrates a text processor, smoothing filter and multi-level memory storage array on a
single-chip. Text-to-speech conversion is achieved by processing the incoming text into a phonetic
representation that is then mapped to a corpus of naturally spoken word parts. The synthesis
algorithm attempts to use the largest possible word unit in the appropriate context to maximize natural
sounding speech quality. The speech units are stored uncompressed in a multi-level, non-volatile
analog storage array to provide the highest sound quality to density trade-off. This unique, single-chip
solution is made possible through Winbond’s patented multilevel storage technology. Voice and audio
signals are stored directly into solid-state memory in their natural, uncompressed form, providing
superior quality voice reproduction.
The chip can be programmed through the SPI port, allowing downloading of different languages and
speaker databases when made available by Winbond.
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