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[return to "How I discovered a hidden microphone on a Chinese NanoKVM"]
1. mannan+y6[view] [source] 2025-12-06 14:55:29
>>ementa+(OP)
any speaker can be tapped into as a microphone by a motivated government.
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2. Workac+Ec[view] [source] 2025-12-06 15:41:30
>>mannan+y6
No, because the drive circuit for a speaker is the opposite of the circuit for a microphone. The output stage of a speaker amplifier is just that, an output. The only way to record audio from a speaker, which is totally possible, is to have also purposely built an input stage also attached to the speaker. Which at that point you might as well just use a microphone...

Audio input and output are not reversible.

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