IMDI (Intellivision Music Digital Interface) is a prototype of a combined MIDI interface and Intellivision cartridge. It turns the Master Component / ECS combo into a MIDI instrument. It came about as a result of a converstion with Paul Nurminen of the Intellivisionaries.
Currently IMDI runs a modified version JoeZ’s Simple Synthesizer for the ECS. This version can take input from either the ECS synthesizer keyboard or a MIDI source and use it to drive the six voices of the ECS.
When using a MIDI source, the note velocity is used to set the output volume, making the ECS touch sensitive for the first time. The sound of the Simple Synthesizer has also been sexed up a bit with the addition of a little vibrato and decay.
Media Links:
media0101.intvprime.com/ba4ef/intellivision-echo/Hardware-Components/IMDI-Prototype-Snippet.gif
youtu.be/F2tNW9ZB9xM
Source Links:
atariage.com/forums/topic/278479-imdi-a-midi-interface-for-the-intellivision-ecs/