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Número de pieza | WTS701 | |
Descripción | WINBOND SINGLE-CHIP TEXT-TO-SPEECH PROCESSOR | |
Fabricantes | Winbond | |
Logotipo | ||
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WTS701
WINBOND SINGLE-CHIP TEXT-TO-SPEECH PROCESSOR
The information contained in this datasheet may be subject to change without
notice. It is the responsibility of the customer to check the Winbond USA website
(www.winbond-usa.com) periodically for the latest version of this document, and
any Errata Sheets that may be generated between datasheet revisions.
Publication Release Date May 2003
- 1 - Revision 3.09
1 page 3.2. WTS701 TYPICAL APPLICATIONS
WTS701
HOST Controller
WTS701
CS\
SS\
MOSI
MISO
SCLK
R/B\
INT\
VFS
VCLK
VDX
AUXOUT
AUXIN
SP+
SP-
Baseband
Processor
CODEC
FS
CL
DIN
DOUT
Figure 2. WTS701 Configuration for Digital (CODEC) Environment.
HOST Controller
WTS701
CS\
SS\
MOSI
MISO
SCLK
R/B\
INT\
VFS
VCLK
VDX
AUXOUT
AUXIN
SP+
SP-
Line out
Line in
Figure 3. WTS701 Configuration for Analog Environment
Publication Release Date: May 2003
- 5 - Revision 3.09
5 Page WTS701
7. FUNCTIONAL DESCRIPTION
As a real System-On-Chip solution, the WTS701 performs the overall control functions for host
controller and text-to-speech processing.
The WTS701 system architecture consists of the following functions:
• Serial interface to monitor the SPI port and interpret commands and data
• Text normalization module to pre-process incoming text into pronounceable words
• Words to phoneme translator, which converts incoming text to phoneme codes
• Phoneme mapping module that maps incoming phonemes to words, sub-words, syllables or
phonemes present in the MLS memory
• Volume and speed adjustments
• Digital and analog output blocks for off-chip usage
The WTS701 system performs text-to-speech synthesis based on concatenative samples. The units
for concatenation can vary from whole words down to phoneme units. The convention is that the
larger the sub-word unit used for synthesis the higher the quality of the speech output. A corpus of
pre-recorded words is stored in Winbond’s patented multilevel storage (MLS) memory and a mapping
of the various sub-word parts is held in a lookup table. The speech creation is achieved by
concatenation of these speech elements to produce words. The system process flow is shown in
Figure 5.
Serial Text,
symbols &
Control
WTS701
Text Normalization
Words to Phoneme
Phoneme Mapper
MLS
Memory
Digital
output
Analog
output
Speech
Figure 5. WTS701 System Process Flow.
- 11 -
Publication Release Date: May 2003
Revision 3.09
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet WTS701.PDF ] |
Número de pieza | Descripción | Fabricantes |
WTS701 | WINBOND SINGLE-CHIP TEXT-TO-SPEECH PROCESSOR | Winbond |
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