Creative Aurvana ANC Headset Review
 

Right after installing the battery inside the Aurvana ANC, we wanted to check out the noise cancelling feature, so without having it connected to any audio source, we put the headset on; with the feature turned off, we could hear a low level of background noise coming in both ears but with the noise cancelling on, that noise was completely gone, which is quite impressive.

http://www.madshrimps.be/articles/article/1000902/