Difference between revisions of "Yamaha ADPCM"

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(add link to codec, add references to SMAF chips using this codec)
m (clarify 'codec' link)
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* Company: Yamaha
 
* Company: Yamaha
 
* Sample: http://samples.mplayerhq.hu/A-codecs/format-0x20-laugh.mmf
 
* Sample: http://samples.mplayerhq.hu/A-codecs/format-0x20-laugh.mmf
* Codec: https://web.archive.org/web/20160323215457/http://smaf-yamaha.com/jp/tools/dl/Yamaha-ADPCM-ACM-Driver-100-j.zip
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* ACM Codec: https://web.archive.org/web/20160323215457/http://smaf-yamaha.com/jp/tools/dl/Yamaha-ADPCM-ACM-Driver-100-j.zip
  
 
A variant of this codec is used by several Yamaha chips:
 
A variant of this codec is used by several Yamaha chips:

Revision as of 18:05, 28 October 2017

A variant of this codec is used by several Yamaha chips:

  • Y8950(MSX-SOUND)
  • YM2608(OPNA) [the external ADPCM channel only]

and may also be used on the following chips:

  • YM2610(OPNB) [the external ADPCM_B channel only?]
  • YMZ263B(MMA)
  • YMZ280B(PCMD8)

The codec was also used by Yamaha SMAF MA-2 and onward):

  • MA-2 (YMU759)
  • MA-3 (YMU762)
  • MA-5 (YMU765)
  • MA-7 (YMU786)

The functionality of this codec is explained fairly extensively in two datasheets: