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Duh !
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this post was submitted on 29 Dec 2023
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S-video was a mini DIN connector which wouldn't have fit into one of these RCA jacks.
If you'd put composite video (the yellow RCA cable in this setup) into one of the audio jacks, pretty much all TVs would not do anything with it as an incompatible signal. If they actually tried to turn it into something, it wouldn't be audible. Composite video generates a signal at something like 5-10Mhz, human hearing tops out around 20Khz (250-500x lower)
Just need to overclock the human auditory senses, duh
You clearly haven't seen my on Caffeine
You can always drag out the signal to frequency shift it or something similar. It's done all the time in astronomy as an example to create visualizations.
Waveform example here;
https://www.ques10.com/p/26463/sketch-composite-video-signal-waveform-for-at-leas/
http://wla.berkeley.edu/~cs150/sp99/sp99/project/compvideo.htm
I guess it depends how much of a frequency shift you do, but I imagine with the blanking intervals it will mostly just sound like a nasty sawtooth wave?