What is a .EFV file?
An .EFV file is a type of sound file specifically created for use with the Ensoniq VFX-SD digital workstation synthesizer. This synthesizer is a musical keyboard that was first released in 1989. The .EFV file contains data similar to MIDI files, which includes musical information such as the notes that need to be played, the speed or tempo of the music, pitch settings, and other details necessary for the music to be played back correctly on the Ensoniq VFX-SD synthesizer.
The Ensoniq VFX-SD was developed as an advanced version of the earlier VFX synthesizer, also released by Ensoniq in the same year. This newer model included several enhancements over its predecessor. Notably, it featured a built-in floppy drive that allowed users to save and transfer sound files like the .EFV files. It also boasted a 24-track sequencer which provided extensive capabilities for music composition. This sequencer was equipped with editing tools that enabled musicians to finely tune their compositions by arranging notes and patterns. These compositions could then be saved as .EFV files.
Once created, these .EFV files could be saved onto floppy disks, making it easier for users to share their music compositions or transfer them to other devices that supported the Ensoniq VFX-SD format.
However, it's important to note that there are currently no widely available modern programs that can open .EFV files directly due to the age and specialized nature of the Ensoniq VFX-SD synthesizer. Those interested in accessing content within .EFV files might need to use vintage hardware or specialized legacy software that supports this file format.
Verification
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