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Signal Carnival

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141 points adunk | 1 comments | 20 Apr 25 17:13 UTC | HN request time: 0.23s | source
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WorldPeas ◴[21 Apr 25 03:52 UTC] No.43748387[source]▶
has anybody tried this with a modern computer, can that get more horsepower out of audio-video?
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junon ◴[21 Apr 25 06:52 UTC] No.43749048[source]▶
The problem you'll almost immediately run into is that modern computers typically use digital video streams rather than analog streams. You'd need to use VGA for the audio part (and that's making a lot of assumptions about the ability to send arbitrary stuff on it, I'm not exactly sure these days), and I'm not sure what readily available component could even be used for the video part.
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1. schobi ◴[21 Apr 25 09:33 UTC] No.43749964[source]▶
Right - unlikely this is going to work.

For sending a VGA signal even at 640x480 you will need a short h sync pulse of 3.8us at 31.x kHz. You would need an audio interface without filters with single low pulses at 260 kHz samplerate. Otherwise the monitor will just not detect a signal.

You could however use h sync and v sync from the VGA output and feed audio to the rgb channels. But thiswould give a mess of wires and is far from the beautiful idea shown here to just connect the white/yellow plugs differently.