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en.wikipedia.org/wiki/Echo

In audio signal processing and acoustics, echo is a reflection of sound that arrives at the ... The reason of reflection may be explained as a discontinuity in the propagation medium. This can be heard when the reflection returns with sufficient ...

www.gcsescience.com/pwav11.htm

Echo and Reverberation - Reflected Sound Waves.

www.dictionary.com/browse/echo

Echo definition, a repetition of sound produced by the reflection of sound waves from a wall, mountain, or other ... The American HeritageĀ® Science Dictionary

www.tutorvista.com/content/science/science-i/sound/echoes.php

As a result of reflection of sound wave from a large obstacle, the sound is heard which is named as an echo. Ordinarily echo is not heard as the reflected sound ...

www.reference.com/science/echoes-created-fafd0d1c0acfcadf

Echoes work through the reflection of sound waves. When a person shouts into a well or canyon, and they hear an echo, it is ... science.howstuffworks.com.

www.dkfindout.com/us/science/sound/echoes

Improve your knowledge on what an echo is and find out more about sound with DK Find Out for kids. ... Science · AW 187527 OUTERPLANETS PeterBull 2 ... An echo is a sound that is repeated because the sound waves are reflected back.

www.physicsclassroom.com/mmedia/waves/er.cfm

If you have ever been inside of a large canyon, you have likely observed an echo resulting from the reflection of sound waves off the canyon walls. Suppose you ...

www.school-for-champions.com/science/sound_echoes.htm

Nov 9, 2005 ... Explanation of echoes made by sound. ... An echo is the sound you hear when you make a noise and the sound wave reflects off a distant ...

science.howstuffworks.com/radar1.htm

Echo - Echoes and Doppler shift are two effects that are key to understanding radar. Learn about echoes, Doppler shift and sonic booms. ... by Marshall Brain Science | Acoustics ... 11 Historical Artifacts We Still Can't ExplainGrunge.com.

.ask.com/youtube?q=What+Is+the+Scientific+Explanation+of+an+Echo&v=JgXzq7jv5mQ
Apr 8, 2013 ... Echo is a secondary sound that is heard by the listener after the original ... Echo - audio explanation ... Project Iko Science - What is an echo?