Yamaha ADPCM: Difference between revisions
Jump to navigation
Jump to search
(adpcm_yamaha is in ffmpeg since 2005 btw. need spb sample.) |
(add notes about other chips which use the Yamaha ADPCM codec, and some sources) |
||
Line 4: | Line 4: | ||
* Sample: http://samples.mplayerhq.hu/A-codecs/format-0x20-laugh.mmf | * Sample: http://samples.mplayerhq.hu/A-codecs/format-0x20-laugh.mmf | ||
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 functionality of this codec is explained fairly extensively in two datasheets: | |||
* Y8950 application manual: http://www.datasheetarchive.com/pdf/download.php?id=212962c2fe1b63fdc5ab320ca05ff3efefc925&type=M&query=y-8950 | |||
* YM2608 datasheet (Japanese): http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2608J.PDF | |||
* Translated version of YM2608 datasheet: http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2608J%20Translated.PDF | |||
[[Category:Audio Codecs]] | [[Category:Audio Codecs]] |
Revision as of 16:40, 28 October 2017
- Microsoft Audio ID: 0x0020
- Extension: spb,mmf
- Company: Yamaha
- Sample: http://samples.mplayerhq.hu/A-codecs/format-0x20-laugh.mmf
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 functionality of this codec is explained fairly extensively in two datasheets:
- Y8950 application manual: http://www.datasheetarchive.com/pdf/download.php?id=212962c2fe1b63fdc5ab320ca05ff3efefc925&type=M&query=y-8950
- YM2608 datasheet (Japanese): http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2608J.PDF
- Translated version of YM2608 datasheet: http://nemesis.hacking-cult.org/MegaDrive/Documentation/YM2608J%20Translated.PDF