LampShopOnline on Twitter: "#WednesdayWisdom A duck's quack doesn't echo, and no one knows why https://t.co/Ngizztbthl" / Twitter
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Duck Quacks Don't Echo (2014)
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Widely Believed Fact : A duck's quack doesn't echo, and no one knows why. | Toluna
Daisy the duck quacks into a microphone inside an acoustic chamber at the University of Salford, Greater Manchester, where Professor Trevor Cox disproved the myth that a duck's quack doesn't echo. Acoustic
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Preview - PA Images | Duck, Salford, Greater manchester
Duck Sauce
Daisy the duck quacks into a microphone held by Professor Trevor Cox at the University of Salford, Greater Manchester, where Professor Cox disproved the myth that a duck's quack doesn't echo. Acoustic
Duck Quacks Don't Echo (TV Series 2014– ) - IMDb
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Is it true a duck's quack doesn't echo? And if it is true, why? - Quora