Is it true that the "Quack" of a duck doesn't echo?

Question

IF its true is there a scientific explanation for it?

Answer 1

Not true. Almost all natural sound echoes.
The sounds made of oscillation of the air
can described with the functions sin and cos.
When you hear an echo, the sound waves
reflects from a surface and returns to you again.
the only case when you don't hear the echo,
when the reflected echo is the same as
the original, but in the opposite phase. Think of about
it like a wave mirrored. You add the 2 waves
(original and reflected) and you got 0, or a wave form
which doesn't move. It is not a new science, the ancient
Greek and Roman people built the theaters the way which
the words the actors said arrived to the audience very good.
Not echoing sounds are usually artificial, and don't work
at all directions.

note: echo is the same frequency (high or low sound),
but different amplitude. Other way you would't be able to
hear radio stations at the same frequency on many places,
becouse radio waves also reflecting.

Answer 2

I'm a music tech student (Ie. Sound Recording) and I can positively state that a ducks quack does echo. People don't think it does because it has a very quiet and often over'looked'/heard response.

Solution; put a duck in a room, quack it up with a joke, and listen for an echo.

Answer 3

Sound is a mechanical wave that travels through any matter. An echo is just a reflection of that wave. A duck's quack, like any sound, can echo--although some echos might be harder for you to detect than others.

Answer 4

A duck's quack does echo, but not audibly enough to hear it.
Mythbusters RULES! They did a test on this, and if you really care enough about this myth, go to their website.

Answer 5

Correct. The vibration is muffled by the quack factorization! And the possibility they have peanut butter in their throats!
Quack at cha!

Answer 6

a "quack" echos. every sound echoes. every sound is a wave, it has to be in order to be heard. waves bounce off of other objects, which is called echoing.

Answer 7

a ducks quack does indeed echo... if u have ever watched a mythbusters epidsode.. they proved it does but its so faint only machines can pick it up

Answer 8

Yes it does echo, but it echoes back to us at such a low frequency that humans are unable to hear it.

Answer 9

no it does echo it says on the discovery channel mythbusters it echos trust me

Answer 10

It echos. You should watch mythbusters.