IMF Music File Format IMF ("id music file" or "id's music format") is an audio file format created by id Software for the AdLib sound card for use in their video games. The format is similar to MIDI, in that it defines musical notes, and does not support sampled digital audio for sound effects. IMF files store the actual bytes sent to the AdLib's OPL2 chip, which uses FM synthesis to produce audio output. The format is based on the AdLib command syntax, with a few modifications. Due to the limited features and relatively low sound quality, modern games no longer use IMF music.
IMF Music File Format IMF ("id music file" or "id's music format") is an audio file format created by id Software for the AdLib sound card for use in their video games. The format is similar to MIDI, in that it defines musical notes and does not support sampled digital audio for sound effects. IMF files store the actual bytes sent to the AdLib's OPL2 chip, which uses FM synthesis to produce audio output. The format is based on the AdLib command syntax, with a few modifications. Due to the limited features and relatively low sound quality, modern games no longer use IMF music.