Difference between revisions of "Yamaha Super Intelligent Sound Processor"

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The '''Yamaha AICA Super Intelligent Sound Processor''' is a [[Yamaha]] sound processor created for the [[Sega Dreamcast]] console, [[Sega NAOMI]], [[Sega NAOMI 2]] and the [[Sega Hikaru]] in 1998.
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The '''Yamaha AICA Super Intelligent Sound Processor''' is a [[Yamaha]] sound processor created for the [[Sega Dreamcast]] in 1998, and also used in the [[Sega NAOMI]], [[Sega NAOMI 2]], [[Sega Hikaru]] and the [[Atomiswave]].
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The '''AICA''' has similar specifications to the [[Saturn Custom Sound Processor]], albeit with a few differences, such as having twice the number of audio channels; no FM mode, and no EGHOLD; adding support to ADPCM; and a slightly more capable DSP.
  
 
==Technical specifications==
 
==Technical specifications==
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:*Performance: 32‑bit RISC instructions @ 40 MIPS (million instructions per second)
 
:*Performance: 32‑bit RISC instructions @ 40 MIPS (million instructions per second)
 
*[[Pulse-code modulation|PCM]]: 64 simultaneous audio channels, 16‑bit depth, 48 kHz sampling rate{{fileref|DreamcastDevBoxSystemArchitecture.pdf}}{{ref|http://segatech.com/technical/overview/index.html}}
 
*[[Pulse-code modulation|PCM]]: 64 simultaneous audio channels, 16‑bit depth, 48 kHz sampling rate{{fileref|DreamcastDevBoxSystemArchitecture.pdf}}{{ref|http://segatech.com/technical/overview/index.html}}
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:*Hardware ADPCM 4:1 decompression{{ref|https://github.com/mamedev/mame/blob/master/src/devices/sound/aica.cpp}}
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:*Hardware ADPCM 4:1 decompression
 
*XG MIDI support
 
*XG MIDI support
 
*3D environment effects
 
*3D environment effects

Latest revision as of 16:27, 25 May 2024

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YAICASISP.jpg
Yamaha Super Intelligent Sound Processor
Designer: Yamaha
Introduction date: 1998

The Yamaha AICA Super Intelligent Sound Processor is a Yamaha sound processor created for the Sega Dreamcast in 1998, and also used in the Sega NAOMI, Sega NAOMI 2, Sega Hikaru and the Atomiswave.

The AICA has similar specifications to the Saturn Custom Sound Processor, albeit with a few differences, such as having twice the number of audio channels; no FM mode, and no EGHOLD; adding support to ADPCM; and a slightly more capable DSP.

Technical 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 rate[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

  1. ↑ 1.0 1.1 htt (Wayback Machine: 2000-08-23 20:47)
  2. ↑ http://www.segatech.com/technical/saturnspecs/
  3. ↑ File:DreamcastDevBoxSystemArchitecture.pdf
  4. ↑ http://segatech.com/technical/overview/index.html
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