HMI is a MIDI variant created by Human Machine Interfaces Inc. It supports looping and conditional branching. It was used by Human Machine Interfaces Sound Operating System as the MIDI system and is used in several PC games including The Elder Scrolls II: Daggerfall, Carmageddon and Tex Murphy: Overseer.
HMI files begin with the ID string "HMI-MIDISONG061595"
- Code for an HMI-MIDI converter in the Abuse SDL source
- MultimediaWiki - HMI
- Videogame Music Preservation Foundation Wiki - HMI
- The Human Machine Interfaces developer page (Wayback Machine capture as of 1997-02-25)