FlyerTalk Forums - View Single Post - Noise-cancelling headphones
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Old Sep 2, 99, 5:29 pm
  #3  
Indurain
 
Join Date: Aug 1999
Location: SNA, LAX
Programs: UA 1K, SPG Plat, Hertz P Circle
Posts: 1,628
You're right RichG, the headphones on UA is great, I was just comparing with the one I normally use. I would definitely use it if I forgot my own set. You can even tell the difference on the upper deck of the 744, which many have said here to be the quietest part of the aircraft!

Apparently the noise-canceling circuitry used is a very simple design. If you press your palm hard against the foam of the speaker, it will set off a high-pitched feedback. It also does that if you press the headphones too hard against your ears - that hurts!
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