Sunday, April 6, 2014

whats the difference between noise canceling and sound isolating headphones?




ZakariaI





Answer
Noise canceling is usually when the headphones have an external microphone to listen to your environments noise, then produces a sound of equal frequency to cancel out the outside noise (two of the same frequency's cancel each other out). Noise isolating just uses padding and soundproofing on the headphones and cushion to block out the exterior noise.

Noise Canceling are usually better, but more expensive.(Bose usually uses this - which explains their price)

Nowadays, many headphones especially in-ear are noise isolating headphones. They just use materials that don't let sound transfer through easily to isolate your inner ear form the outside, hence, blocking out a good majority.

Are there headphones that cancel outside noise very well?




Bobby


I mean noise of cars, boom boxes, kids bouncing balls on the streets, skateboards and so on...


Answer
Yes, there are two types: Passive noise cancellation (PNC) and Active noise cancellation (ANC).

Active noise cancelling uses electronics to disable sound, more-so the lower noises, something like 500Hz and under. Depending on how good the noise cancelling microphone is, ANC usually gives something like 25-40dB of noise cancellation. A good example of passive noise cancelling headphones would be the Audio-Technica ATHANC-7.

Passive noise cancelling is more associated with earbuds, which make a tight seal around the ear canal to block out ambient noise. The noise cancelling properties aren't limited to only the low frequencies. Some earbuds only give around 20dB of isolation, while canalphones can offer up to 40dB of isolation. A good example of noise cancelling earbuds are Etymotic MC-5.




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