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Joined 3 years ago
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Cake day: June 10th, 2023

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  • It takes 29 microseconds for sound to travel 1cm. That’s eons in electronics world. The phone you use is probably doing an operation every .0005us or faster.

    Also, that style of headphone is a lot less complicated than ANC headphones. They just have a microphone/speaker pass through and an envelope-follower that detects peaks in the audio wave. If the peak is over a threshold, shut off the speaker. The headphones block the sound just like classic hearing protection.

    They also may potentially benefit from a small buffer, so everything you’re hearing is a little delayed. Gives the circuit more time to react, though I’m not sure that’s necessary.