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"A Duck's Quack Doesn't Echo, and no-one knows the reason why?"

The duck with no reflections
We placed the duck in our anechoic chamber to show what would happen in a room with no reflections. Behind the duck you can see wedges of fibreglass, these are used to absorb the sound. We recorded the anechoic duck:

Anechoic duck in WAV format (17k)

Anechoic duck in MP3 format (3k)

See Danny and Daisy on video (400k, realplayer needed)

 

duck in an anechoic chamber

Duck in anechoic chamber © Manchester evening news

 
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