what is echo?

Question

i need a very gud definition .. not the normal one that it is the reflection of sound from some rigid surface

Answer 1

1. a repetition of sound produced by the reflection of sound waves from a wall, mountain, or other obstructing surface.
2. a sound heard again near its source after being reflected.
3. any repetition or close imitation, as of the ideas or opinions of another.
4. a person who reflects or imitates another.
5. a sympathetic or identical response, as to sentiments expressed.
6. a lingering trace or effect.
7. (initial capital letter) Classical Mythology. a mountain nymph who pined away for love of the beautiful youth Narcissus until only her voice remained.
8. Cards. the play of a high card and then a low card in the suit led by one's partner as a signal to continue leading the suit, as in bridge, or to lead a trump, as in whist.
9. Electronics. the reflection of a radio wave, as in radar or the like.
10. (initial capital letter) U.S. Aerospace. one of an early series of inflatable passive communications satellites.
11. a word used in communications to represent the letter E.
–verb (used without object)
12. to emit an echo; resound with an echo: The hall echoed with cheers.
13. to be repeated by or as by an echo: Shouts echoed through the street.
–verb (used with object)
14. to repeat by or as by an echo; emit an echo of: The hall echoes the faintest sounds.
15. to repeat or imitate the words, sentiments, etc., of (a person).
16. to repeat or imitate (words, sentiments, etc.).

That enough for you?

Answer 2

In audio signal processing and acoustics, an echo (plural echoes) is a reflection of sound, arriving at the listener some time after the direct sound. Typical examples are the echo produced by the bottom of a well, by a building, or in a room, by the walls. A true echo is a single reflection of the sound source. The time delay is the extra distance divided by the speed of sound.

Answer 3

It is the reflection of sound from a rigid surface that maintains the frequency and speed but the phase may change. Ask the submarine man what is echo.

Answer 4

There once was a nymph named Echo. She loved to talk. Often, when Zeus would come to visit with the nymphs, Echo would distract jealous Juno when she came in search of her wayward husband. On one of these occasions, Juno grew tired of Echo's deceit. As punishment, she doomed Echo to never being permitted to speak first to another being. And even after she had been spoken to, she could never do more than repeat what had been told to her.

One day in her wanderings, Echo happened across the youth Narcissus. Narcissus was so beautiful that upon looking at his reflection in a pool, he fell in love with himself, and wasted away the remainder of his life gazing longingly at his own image. Echo stayed by him for the remainder of his days, eventually wasting away to no more than a faint voice. Today, if you call into the hills you may still hear her respond.

Answer 5

Mr Echo of lost

Answer 6

Multiple sound or other wave reflection in a confined space.
See also:http://en.wikipedia.org/wiki/Echo

Answer 7

a chocolate biscuit made by Fox's, biscuit base with an Aero type top covered in chocolate. mint flavour the best

Answer 8

echo means good

Answer 9

The dolphin.

Answer 10

Hello , ello, llo , lo,o,oooooooooooo