Do you also hear this when your speakers/audio system are off? | Hacker News

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		amelius on July 18, 2021 \| parent \| context \| favorite \| on: An app for M1 Macs that plays the sound of a fan a... Do you also hear this when your speakers/audio system are off?

HPsquared on July 18, 2021 [–]

I'm not GP, but yes: coil whine is audible as a high frequency whine/buzz, caused by power supply components (inductors) physically vibrating at high frequency.

amelius on July 18, 2021 | [–]

Certainly, I was just curious if they were hearing coil whine.

microtonal on July 19, 2021 | | [–]

Yes, there are no speakers connected to the system.

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