Chips › Sound & audio › Speech synthesis › Votrax SC-01
Votrax SC-01
1980
Votrax's late-1970s phoneme-based speech synthesizer chip, giving artificial voices to arcade games and early talking devices.
Reference & documentation
External technical references for programming Votrax SC-01 and for writing emulators.
| Resource | Type | Notes |
|---|---|---|
| Votrax SC-01 Phoneme Speech Synthesizer Data Sheet (1980) ↗ | Datasheet | Official datasheet: phoneme table, durations, electrical specs |
| Votrax SC-01 Data Sheet (Internet Archive, searchable) ↗ | Datasheet | 9-page datasheet, PDF plus full-text OCR |
| Votrax SC-01 Phoneme Speech Synthesizer Data Sheet (1980) ↗ | Pinout | 22-pin package pinout and signal timing diagrams |
| Votrax SC-01 Application Note ↗ | Programming | Phoneme sequencing, ROM vs real-time modes, clock control |
| Votrax Type 'N Talk User's Manual ↗ | Programming | Phoneme codes and concatenation rules in practice |
| redcedar.com SC-01A Speech Synthesizer overview ↗ | Reference | Formant synthesis specs, successor and competitor chips |
| US4527274A Voice synthesizer (Votrax SC-01 use) ↗ | Reference | Phoneme timing, FIFO and master-clock pitch control |
| Votrax SC-01 Application Note ↗ | Schematic | Amplifier and microprocessor interface reference circuits |
| MAME votrax.cpp SC-01/SC-01A emulation source ↗ | Source | Die-accurate digital+analog filter emulation, most complete |
| Votrax Python Synthesizer (MAME port) ↗ | Source | Python SC-01A emulation, sample-by-sample analog filters |
| historic-mame votrax.c (2004 emulator) ↗ | Source | Older 64-phoneme-sample emulation, simpler reference |