4K ROM by Steve Bjork for Color TRS-80 computer.
Music by friends around the same time.
When I saw this I immediately knew what wonderful things could be done with the FFT, although I am still trying to write the programs for those things. The FFT is deceptively simple and complex at the same time. This demo visualizes the human 40 millisecond time/frequency perception window. (Time and frequency cannot "really" coexist because they are orthogonal dimensions.) This is similar to a graphic equalizer display and an MP3 audiovisualizer or color organ (an effect that appears near the end).
Do remember this program well. Very cool for the coco. I hooked it to my stereo and just thought it amazing back in the day. Thanks.
popper18 1 year ago