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Echo - Wikipedia


In audio signal processing and acoustics, echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is proportional to ...

How does an echo occur? | Reference.com


An echo occurs when a sound wave reflects back towards its source after hitting ... one continuous sound rather than the separate sounds that make up an echo.

Sound Echoes by Ron Kurtus - Succeed in Understanding Physics ...


Sound Echoes. by Ron Kurtus (revised 9 November 2005). An echo is the sound you hear when you make a noise and the sound wave reflects off a distant ...

What Is An Echo | Reflection Of Sound Waves | DK Find Out


Improve your knowledge on what an echo is and find out more about sound with DK Find ... Making a sound causes waves of vibration to move through the air.

What Makes an Echo? @ Super Beefy


Oct 14, 2007 ... Sound travels in waves, much the same way ripples of water travel in the ocean. When you make a sound, sound waves travel through the air.

www.ask.com/youtube?q=Makes an Echo Happen&v=BYiCzWZ8cBs
Sep 25, 2008 ... Nice introduction to sound waves through echoes and explaining how some animals rely on sound echoes to find their prey...

Why do caves echo but other enclosed areas don't? - Quora


They do, but you just can't distinguish it from the source. The varying degrees of echo's depend ... The sound waves must not get absorbed by the surroundings if that happens you won't be able to hear the echo. .... If you went 10 years into the future and you could only make 5 Google searches before coming back, what ....

I hear an echo on my conference call, why? | United States ...


Feb 20, 2009 ... If you hear an echo on your conference call, there is most likely someone (or yourself) on the conference call that has a speaker/microphone ...

Echoes, Sound, Science, Science Tutoring | Tutorvista.com


Ordinarily echo is not heard as the reflected sound gets merged with the ... from a wall and sets up a simple pendulum which makes three vibrations per second.

Why do echoes happen? - Quora


What type of echo are you saying? The are echoes in the air, in the cave, in water or ... What causes echoes in a cell phone when speaking?

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What causes echoes? | Reference.com


An echo is caused when sound waves bounce off of a surface and travel back to the ears. Echoes commonly occur when loud sounds are emitted into an empty ...

What Causes An Echo? - Chest of Books


An echo is caused by the reflection of sound waves at some moderately even surface, such as the wall of a building. The waves of sound on meeting the surface ...

Reflection: Echo vs. Reverberation - The Physics Classroom


Echo vs. Reverberation. Sound is a mechanical wave which travels through a ... a medium by particle interaction is what makes a sound wave a mechanical wave. ... This echo results from the reflection of sound off the distant canyon walls and ...