In a recent interview with Engadget, Apple's vice president of hardware engineering Kate Bergeron and AirPods marketing director Eric

To a publication, Apple executives explained the magic behind AirPods 4 ANC feature that works without ear tips.

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.