.FFT File Extension

Audio filter used by Adobe Audition, an audio production application; saves settings that limit audio frequencies so that certain portions of the waveform can either be isolated or pronounced; enables engineers to fine-tune the sound of audio data.

Final Form Text (FFT) document format created by IBM to format text that cannot be modified; includes document text as well as graphics data; used to fix the layout of document pages, headers, footers, and text.

FFT files were commonly created by DisplayWrite, a once-popular IBM program used for word processing.