Article History

100% YQN

.snd (file)


  1. Description
  2. Relevance to botb
  3. Software
  4. Technical information
  5. Other uses of same extension
  6. See also


Unlike other chiptune Atari ST (console) formats, the SNDH file format contains not only the song data but also its 68000 assembly replay routine, and a header with additional data. For many years it has been the standard on the scene. Because of the file system limitations, Atari ST files have a 3-letters extension (.snd), while modern computers can use the unambiguous .sndh extension. Here is the history
of the format.

Relevance to botb

.snd/.sndh files can be submitted to the
aym (format) competitions.


Because of the nature of the format, trackers can only load their own sndh's. You cannot open with maxYMiser a .snd file saved by MusicMon or converted from another tracker, and vice-versa. So before you start trying to load a .snd to a tracker, make sure it was made by that same tracker. Otherwise the ST will probably crash. Trackers come with example songs, use those to discover.

- maxYMiser (Atari ST/Falcon)
- MusicMon (Atari ST)
- Ttrak (Atari ST)

- AY_emul
- Just Another Musicplayer
(Atari ST/Windows)

- SNDHconv
(Atari ST/TT/Falcon) converts from several ST YM2149 trackers to SNDH standard.

Technical information

Technical information is available from

Other uses of same extension

The .sndh extension is unambiguous, but its 3-letters variant .snd has many other uses, mostly related to sound:

- Amiga IFF/8SVX Sound
- Sun/NeXT/Tandy/Apple
- AKAI MPC-series sample
- Macintosh Resource Fork sound
- Unix audio file

As well as some unrelated uses:

- Heroes of Might & Magic 3 archive
- Sega FILM/CPK file format

See also

AY YM (soundchip)
Atari ST (console)
aym (format)
.ym (file)
SNDH archive
(nearly 5k tunes from games, demos...)

File Formats