| Filename extension | .xm |
|---|---|
| Internet media type | audio/xm |
| Developed by | Triton |
| Type of format | Module file format |
| Extended from | MOD |
XM, standing for "extended module", is an audio file type introduced by Triton's Fast Tracker 2. XM introduced multisampling-capable instruments with volume and panning envelopes, and basic pattern compression. It also expanded the available effect commands and channels, added 16-bit sample support, and offered an alternate frequency table for portamentos.
XM is a common format for many chiptunes.