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Yamaha Super Intelligent Sound Processor

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Yamaha Super Intelligent Sound Processor

The Yamaha AICA Super Intelligent Sound Processor is a Yamaha sound processor released for the Sega Dreamcast console and Sega NAOMI arcade system in 1998.

Specifications

  • AICA clock rate: 67 MHz[1]
  • CPU core: ARM7 @ 45 MHz[2]
    • Performance: 32‑bit RISC instructions @ 40 MIPS (million instructions per second)
  • PCM: 64 simultaneous audio channels, 16‑bit depth, 48 kHz sampling rateMedia:DreamcastDevBoxSystemArchitecture.pdf[3][4]
    • Hardware ADPCM 4:1 decompression
  • XG MIDI support
  • 3D environment effects
  • DSP for reverb, chorus and other musical effects
  • RAM: 2 MB (Dreamcast), 8 MB (NAOMI)
  • Middleware: Audio compression, voice recognition[1]

References