My sony headphones can tell me how loud my music is playing at and I’m wondering how they manage to do that and how accurate it really is. Explanations are appreciated.
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They probably can’t. If they’re USB or bluetooth powered(meaning there’s a microcontroller in them), and use a dedicated driver on the source, it’s possible. Then they’d probably be preloaded with a table made in the R&D labs which says that 30% volume=x dB etc. It won’t be very accurate though.
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