Noise Canceling Headphones | What They Are and How They Work

So how does this not cancel the music your listening to? In other words, how does the frequency it produces not affect the music your listening to?

nice This will help to my headphone

and in also in accidents

these would have really helped me growing up with my family

You're too slow!

good and smart use of anti-resonanace frequencies. I have been always thinking about a way in which anti-resonance frequencies can be used in a useful way. 

nice vid!

ok, now i see thanks!

A sound wave traveling through air will cause a sinusoidal pressure variation in the air, which is a characteristic of longitudinal waves. But, you are right, sound is a longitudinal wave and for ease of understanding "cancellation" we used a transverse wave as most measuring instruments and computer programs will use a transverse wave on the display to show sound.

thanks, i understand the concept of interference, but i just didnt know that a longitudinal wave can be illustrated in the same way as a transverse wave

You are correct! It would be known as destructive wave interference where it temporarily cancels out a wave at a given moment. The two pulses have opposite displacement and when they meet at a given point they pull on each other to "cancel" out for only that meeting point. Once the waves pass each other, they go back to normal.

what i dont get is that sound is a longitudinal wave which can be cancelled out? is this by means of destructive wave interference? I should be wrong here, but please inform me how

Sonic ftw