ascii to midi conversion describes the use of music notations saved in ASCII format (rare) to generate a MIDI music content and this can be done with specific music composition software that can read these files.
What is also possible is that you can find tools that can ready any text file and based on algorithm generate a sound file from it, quiet often something odd gibberish. If that is your case as well, ArtWonk may be the tool you were looking for.
Updated: October 30, 2023