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by detaro 1662 days ago
ADSL upstream starts at 25kHz, downstream at >120kHz. So probably not. Purpose-designed ultrasonic hardware might be able to.
2 comments
londons_explore 1662 days ago
Or an acoustic coupler which also acts a little like an electrical coupler at higher frequencies because it has no electrical shielding...
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codeflo 1662 days ago
Not sure if this is within the spirit of the question, but: The individual ADSL bands are only 4 kHz wide, so you could modulate 4 or 5 of them down into the audible range (20Hz - 20kHz) and back up again after the transmission through the acoustic coupler. In theory, ADSL should then pick those bands to transmit the data.
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