A duck's quack doesn't echo?

[Trevor Page]

Hi all,

Here's a strange one. Totally OT I know, but I thought it would cause some
amusement....

A friend of mine sent me a list via email of '63 amazing things you never
knew'. Amongst loads of stuff which is certainly true, one of the things
listed is:

>>
>>10. A duck's quack doesn't echo. No one knows
>>why.
>>

Well, maybe one of you audio experts can explain why a duck's quack doesn't
echo! ;-) I spent all evening trying to think about it...

Cheers,


Trev