I don't do physics well enough to explain the difference between an RF transmission as it takes place (at whatever frequency) and how that gets "translated" into something we can listen to. But there's no reason why this specific transmission would be outside of the human range of hearing if sampled correctly. The audio frequency at which a radio transmission gets played back can be easily manipulated by changing the center frequency.
Seems like we should still be able to hear it then, unless they are somehow unable to filter background noise. For example a 500Hz sine wave has a bandwidth of effectively 0 but you can hear it perfectly fine. But I guess if we alter the frequency and reduce the sampling rate to fit it on the internet it wouldn't really be the signal anymore.
The link just has jpegs of different signals. I have a radio background from the Army and HAM radio. Figured someone would have a slice of the signal, but I'll have to Google it.
Yeah a terrestrial PSK transmission is the closest thing you’ll get to that. Anything from the voyager baseband won’t result in anything other than „slightly louder noise“
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u/Jisifus Dec 11 '24 edited Dec 11 '24
No. The baseband data is tens of gigabytes, the signal is very narrow and almost indistinguishable from background noise.
If you want to know what a strong terrestrial signal using the same protocol with a low noise floor would sound like, listen to the BPSK31 sample here: https://www.sigidwiki.com/wiki/Phase_Shift_Keying_(PSK))