True noise cancelling headphones will cut noise far, far beyond anything acoustic isolation from ear pads can accomplish.
I have a pair of Audio-Technia QuierPoint ATH-ANC1. They are "on ear" types so I didn't recommend them to the person asking for ones that cover the ears. They are very comfortable for me. When I fly, as the roar and whine of the big jet engines invades the cabin, I just switch them on and all the racket becomes a quite background purr. I often wear them for the entire 11 hours from the west coast of the USA to Europe, even if I'm not listening to any programs. The active circuitry in true noise-cancelling phones inverts the sound arriving and so actually cancels it out. The circuit takes a few seconds to adapt so when the attendant brings my drink she has no trouble waking me. 73 Ron AC7AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
