It didn't really occur to me until now, but Apple has been selling AirPods with the same design as the original launch, back in December 2016, continuously for the eight years since then.

In other words, without getting too much into the weeds of things, active noise cancellation works by the device "monitoring" the outside noise and emitting an inverted soundwave, or what Treski calls "the anti phase," to neutralize or negate the external cacophony.