Pat Kane drew this process diagram for Sound Into Graphics in 1983 on one side of a piece of paper.
Scott Wyatt's equipment at the University of Illinois Music Department to was used to
record audio of Jim Bozek playing a scale on a synclavier and also J.S.Bach "Two Part Invention".

The scale was used to test the algorithm and calibrate the audience expectations of what would happen next.

Jim Bozek and Pat Kane then manually edited the audio tape.
Pat Kane reports being amazed by what Jim did with scissors and tape.
"The time reversal was pure  genius."

The edited tape was then taken to the UofI Speech and Hearing lab
where John Knetzel digitized it at a sampling rate of 14 bits @ 40KHz, one channel.

Pat Kane transferred the digital tape onto the UofI CSO VAX and performed digital editing.
After that he ran the DFFT and Keymaping software on it.

Keymap data went to the University of Utah Computer Graphics Lab where it was rendered using custom software written by Van Warren in the 'C' language.

Pat Kane converted the one channel digital sample to two channels, audio on  one channel and sync info on the other. Then the two channels were reconverted  back to two channel analog audio. The audio tape went to Seattle for combination with the computer graphics.

Sketch of Sound Into Graphics Processing By Van Warren During A Trip from Utah to St. Paul

Pat Kane Annotated this Chart of a Scale Played By Jim Bozek for Sound Into Graphics Project 1983

Pat Kane Created This Plot for Sound Into Graphics Project 1983

Lynn Mittelstaedt Warren sketched this first storyboard for the 33.3 Movie