looking for math/hardware descript of destructional iterferene of sound?

Question

looking for math/hardware descript of destructional iterferene of sound

Answer 1

Im not sure what youre asking but phase inversion is the nearest I can think of. Insert a duplicate of your original wave at 180 degree inversion and the net result is zero. This has been a military technology for a long time and is now becoming available in consumer products such as headphones. Look for it in cars etc.