So I understand the basic principles behind noise cancellation. You essentially use a microphone to record incoming sound waves and create an inverse wave that destructively interferes with the initial wave, thus, cancelling it out. But I don’t understand, practically, how this is done.
Let’s assume the sound wave makes contact with the microphone in the AirPod, which analyses the wave and shoots out an inverse wave, but by that point – the initial sound wave would surely have already reached my ears. The AirPod basically needs to cancel the sound wave before it moves roughly a centimetre or it’s too late.
The speed of sound (in a standard environment like air) is 343 meters per second or 34,300 centimetres per second; this means the AirPod has 1/34,300 seconds or ~0.03 miliseconds to do these operations to cancel the wave. That just seems absurd to me for such a tiny chip in the bloody AirPod.
Someone fix my confusion please.
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Based on many comments here it seems there’s many levels and qualities of ANC … like wow…
I recently got my very first ANC ear buds which is EarFun Air Pro 3… all along i thought ANC are gimmicks and dun see why i should spend $100 $200 on a gimmick…
Can say im very pleasantly surprised because those Air Pro 3 are very affordable and the ANC is very good, but now since these are my one and only ear buds, and im sure there are… but how these earbuds compared to those big brands like BOSE, SONY, APPLE that cost $200 $300 a pop? Is the noise cancelling really much better on those big brands?
Please give your review/opinion if you do own actually a pair of Earfun Air Pro 3…
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