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
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.
Echo - Echoes and Doppler shift are two effects that are key to understanding
radar. Learn about echoes, Doppler shift and sonic booms.
Jul 25, 2014 ... When you make a sound, sound waves travel through the air. You first hear that
... If only one obstacle reflects the sound, you'll hear only one echo, a simple echo
. ... What happens when two oceanic plates collide? What are ...
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.
www.voip-info.org/wiki/view/Causes of Echo
Dec 29, 2015 ... Causes of echoIn Brief:Its most likely your echo is caused by the far-end ... So
look what happens if the hybrid in the PSTN-VoIP gateway is ...
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 ...
Islam makes life beautiful and wonderful I have found that ...
Jan 6, 2012 ... Why when I shout in my room I do not hear any echoes? .... or other details, but to
hear echo you need to make the 'click' and pay attention. ... If you happen to
move all furniture and curtains out of a room the difference in ...
So what is an echo, and does it happen to a duck's quack? ... Another common
place to hear echoes is in some railway stations, making announcements hard to
What happens when a sound wave hits a concave shaped surface? ... Echoes
are the sound of your own voice reflecting back to your ears. ... waves overlap
and interfere with each other and the original waves, making the sound less clear