Originally Posted By: PeterGannon
Noise canceling headphones work by blocking out a repetitive, predictable sound, like the humming of an engine, or similar constant sounds. They don't block out new sounds, like an unexpected car horn, or a phone ringing.


No, that would require some very clever headphones. grin

The way noise-blocking headphones work is by creating generating sound that's 180 degrees out of phase with the incoming sound, so that it (in theory) sums to silence:


(Image taken from here).

The only other think I know about them is that my kids break them really quickly. wink

-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?