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  1. noodleroo

    Why doesn't a duck's quack 'echo'?

    Quote: This is what it says: Initially unable to get either duck to quack, they began chattering when paired. Initially, no echo could be found, so the team moved to an anechoic chamber for comparison. When examined by an audio expert, it was found that the echo was "swallowed" by the original...
  2. noodleroo

    Why doesn't a duck's quack 'echo'?

    ...So why doesn't it? I thought all sound would echo. Is it not a vibration of some sort?
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