XM, standing for "extended module", is an audio file type introduced by Triton's FastTracker 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 alternative frequency table for portamentos.
XM is a common format for many chiptunes.
XM most commonly refers to XM Satellite Radio
Xm or XM may also refer to:
- XM.com, a European international online foreign exchange broker
- Citroën XM, a discontinued executive car made by Citroën
- XM (file format), a computer file format for music
- XM (album), a live-in-studio album recorded by Porcupine Tree
- J-Air (an IATA airline code)
- C.A.I. First (IATA airline code)
- a nonstandard Roman numeral for 990 (standard is CMXC)
- (6903) 1989 XM, a main belt minor planet
- XM (financial service), a financial broker
XM (also Transmission 1.1 and Transmission 1.2) is a live-in-studio album recorded by British band Porcupine Tree in early 2003 as a live album of mostly In Absentia tracks. This was taken from a session at XM Satellite Radio in Washington DC on 12 November 2002, and was originally released as a limited edition tour album. It was later released online on the Porcupine Tree store.