Look Ma, no hands!

John Baxter | February 01, 2010

How the bad sound disappears

Not all headsets have noise cancellation technology, but those that do use a cool technology to blot out distracting sounds and leave voices untouched.

Chuck White of DAS explains that every sound has a distinct wave shape:

“Noise-canceling technologies first rely on small microphones that detect the sounds in a given environment. A digital signal processor determines what sound wave is required to cancel the unwanted sound wave and then it creates that sound and amplifies it through speakers or headphones.

“Imagine a ‘positive’ sound and a ‘negative’ sound created at virtually the same time, and these two sounds cancel themselves out.”

OverdriveOnline.com strives to maintain an open forum for reader opinions. Click here to read our comment policy.