.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 a 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.