.IDF File Extension
File TypeMIDI Instrument Definition File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is an IDF file?
Defines the parameters for a specific MIDI instrument, such as a MIDI keyboard or other MIDI controller; provides an instrument ID, patch names (voices), a key map, channel assignments, and other information.
IDF files are usually referenced by audio production programs and typically should not be opened manually.