.IDF File Extension

MIDI Instrument Definition File

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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.

More Information

IDF files are usually referenced by audio production programs and typically should not be opened manually.

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Programs that open or reference IDF files

Windows IDF Editor

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