WTS701EF WINBOND [Winbond], WTS701EF Datasheet - Page 41
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WTS701EF
Manufacturer Part Number
WTS701EF
Description
WINBOND SINGLE-CHIP TEXT-TO-SPEECH PROCESSOR
Manufacturer
WINBOND [Winbond]
Datasheet
1.WTS701EF.pdf
(77 pages)
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The WTS701 is a single chip solution for text-to-speech synthesis. The Text-to-Speech operation is
accomplished by a process of screening the incoming text to normalize common abbreviations and
numbers into a spoken form. The normalized text is then analyzed for phonetic interpretation and this
phonetic translation is mapped into samples to be played out of the analog storage array. This output
signal is then smoothed by a low-pass filter and is available as an analog signal, or can be passed
through the CODEC for digital audio output.
The WTS701 processor state machine
The WTS701 functions as a state machine and changes states either in response to a command sent
by the host controller, after execution of command is completed, or as a result of an internal event.
The WTS701 states are described below in reference to
7.4.4 System Operation
Soft Reset, PWDN
Stop
finish
finish word
conversion finished
Wait
Figure 10. WTS701 Processor States
Convert
Hard Reset
Vcc Applied
Power Down
- 41 -
Convert
Reset
Idle
Figure
Convert
PWUP
10.
Publication Release Date: May 2003
PWDN, Soft Reset
Hard Reset
Idle
WTS701
Revision 3.09
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