Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: neilep on 02/07/2008 00:42:28

Title: Is There A Sound That Does Not Echo ?
Post by: neilep on 02/07/2008 00:42:28

Greets To Meet Ewe,

see Gerty and Claudia here ?

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They're being interviewed on their perspective that a ducks quack does not echo !


well, it seems this is an urban myth.....but it makes me wonder if indeed it is possible for there....

To be a sound that doesn't create
The ability indeed to reverberate ?


whajafink ?

possible ?...impossible ?

probable ?

ta

Neil....Neil...Neil.....Neil.....Neil......Neil....Neil

Title: Is There A Sound That Does Not Echo ?
Post by: lightarrow on 02/07/2008 08:10:58

"Is There A Sound That Does Not Echo ?"

The answer is the title of a song of Simon and Garfunkel
(The Sound of Silence)

Title: Is There A Sound That Does Not Echo ?
Post by: Bored chemist on 02/07/2008 18:34:00

In space, no-one can hear your echo.
Does the sound of one hand clapping count?

Title: Is There A Sound That Does Not Echo ?
Post by: JP on 02/07/2008 18:44:02

It's not echoes, but you've probably heard of noise canceling headphones.  Those work by creating a second sound over the first (incoming) sound to cancel it out.  If you listened to an echo wearing some of those, you wouldn't hear it!

Title: Is There A Sound That Does Not Echo ?
Post by: RD on 02/07/2008 19:59:56

Mythbusters investigated duck quacks...
http://en.wikipedia.org/wiki/MythBusters_(season_1)#Does_a_Duck.27s_Quack_Echo.3F

Title: Is There A Sound That Does Not Echo ?
Post by: syhprum on 02/07/2008 20:28:33

The mythbusters explanation would be quite correct if the surface from which the sound is reflected is quite close but an echo from a more distant source would be quite normal.

Title: Is There A Sound That Does Not Echo ?
Post by: turnipsock on 02/07/2008 20:29:23

The Big Bang?