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Echoes are occurring all the time. During a normal conversation with others in
your home, the sounds of the voices are reflecting off of the ceilings and walls,
often bouncing back and forth from several surfaces before fading away. We're
not aware of them, because the time delay between the original sound and the
echo is so short.
Let's estimate that the minimum delay-time that a person can notice is 0.1 (one tenth)
of a second. That delay is introduced when sound is reflected from a surface that is
0.05 second away (so that it takes 0.1 second to go there and come back to you),
or roughly 50 to 55 feet from you.
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∙ 12y ago
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Why the echo of a sound made by us is not heard in small room?
because the minimum distance between the us (the source) and the reflector should be 16.5 cm.
How does sound produce an echo?
to produce an echo, the sound wave bounces off a surface and then comes back
What is the minimum distance of the obstacle from the source to hear an echo?
About 17 meters.It may slightly changes with speed of sound.this is because sound resumes in ear for 0.1s.
For a sound wave to produce an echo it must?
It must reflect off the surface of an object
What is the best surface for creating an echo?
hard and smooth surfaces will produce the best echoes.
What is the minimum distance required to produce a distinct echo in meter?
17.2m
What is the minimum distance to get an echo?
Depends on the quality of the sound. The minimum distance to hear an echo will be partly based upon the observers ability to resolve different sounds (i.e. so that they can distinguish between the actual noise, and the arrival of the reflected sound - a little 100 year old lady may not be as good as a 15year old!). This will vary between observers, as their auditory reaction times vary In the perfect Physics world though: Assuming a sharp sound (like a gunshot) the minimum distance (d=vt) to hear distinct echo is 17.2m considering the speed of sound to be 344ms. In general the "minimum echo distance" is always equal to half a wavelength from the reflector.
What is the minimum distance of echo?
Depends on the quality of the sound. The minimum distance to hear an echo will be partly based upon the observers ability to resolve different sounds (i.e. so that they can distinguish between the actual noise, and the arrival of the reflected sound - a little 100 year old lady may not be as good as a 15year old!). This will vary between observers, as their auditory reaction times vary In the perfect Physics world though: Assuming a sharp sound (like a gunshot) the minimum distance (d=vt) to hear distinct echo is 17.2m considering the speed of sound to be 344ms. In general the "minimum echo distance" is always equal to half a wavelength from the reflector.
Why the echo of a sound made by us is not heard in small room?
because the minimum distance between the us (the source) and the reflector should be 16.5 cm.
How does sound produce an echo?
to produce an echo, the sound wave bounces off a surface and then comes back
What is the minimum distance of the obstacle from the source to hear an echo?
About 17 meters.It may slightly changes with speed of sound.this is because sound resumes in ear for 0.1s.
What is echo define and explain with examples?
Echo is a delay of sound - it comes at a slower rate and appears to echo. Often distance is a major factor of echo.
Describe ways that echoes are used in measurement?
The speed of sound is the distance travelled by the sound waves in the time between the original sound and the echo. For a direct echo, the distance travelled is double the distance to the reflecting surface.
Where are examples of places where you might produce a good echo?
in a cave
Where can you find a echo?
clap and listen for the echo an echo is just a reverberation of sound bouncing off something solid about 17 meters away and returning will produce an echo. You can't litterally find an echo just clap and listen for one.
What is echo and its application?
echo is nothing but the reflection of sound and it is used to find the distance of certain places like mountains and buildings.
Where do you find an echo?
Any wall in any enclosed room , hill or obstacle about 17 meters away or more will produce an echo.
