What kind of interference does noise canceling head phones use? Video Constructive Interference Destructive Interference Beats Interference Resultant Interference

Noise-canceling headphones use destructive interference to reduce unwanted background noise. Destructive interference occurs when two waves of the same frequency and amplitude are out of phase, meaning their peaks and troughs do not align. When this happens, the waves cancel each other out, resulting in a reduced overall sound level. In noise-canceling headphones, microphones pick up external sounds and generate a sound wave that is the exact opposite of the unwanted noise. When these two sound waves meet, they cancel each other out through destructive interference, effectively reducing the background noise.