Quote:
Originally Posted by oilers_fan
Thanks Photon. I think I misunderstand what noise cancelling headphones actually did. I was hoping they'd act like hearing protection, with a built in speaker!
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They do - they mix the inverted waveform of the ambient sound along with the audio input you feed them. The sound quality is affected somewhat, of course, since that inverse-ambient waveform will also cancel a small portion of the audio spectrum you are feeding it too.