You will always see SoundFonts in PCM format, which is a specific file format that allows the SoundFonts to be read by sample-based MIDI synths. SoundFonts are a file format that uses sample-based synthesis to play MIDI files.ĭeveloped in the early 1990s by E-mu Systems and Creative Labs, its first use was on the Sound Blaster AWE32 an ISA sound card that supported some of the first MIDI configuration.