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Can I ask a stupid question?

Audible frequencies are 0.00002MHz to 0.02MHz (20Hz to 20000Hz). I get harmonics and how powerful they are.

Does RFI many magnitudes of frequencies above our hearing matter? And if so, how?


I see that the RFI noise is approaching -60db at some frequencies, which is significant. That’s about 10db below the level one can expect ambient noise to be in a normal household. But we’re talking MHz.

Please explain how frequencies above 0.5MHz (500kHz) can audibly interfere with our HiFi system.


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