Continuously Variable Slope Delta-Modulator (CVSD)
The HC-55564 is a half duplex modulator/demodulator CMOS intergrated circuit used to convert voice signals into serial NRZ digital data and to reconvert that data into voice.
This speech chip is utilized on the following:
- Williams speech daughter board for Sinistar
- Alien Poker
- Black Knight
- Jungle Lord
- Space Shuttle
- Jokerz, etc.
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Item #: HC1-55564-2, HC-55564, HI-55564