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What is the minimum distance of the obstacle from the source to hear an echo?
Wiki User
∙ 11y ago
About 17 meters.It may slightly changes with speed of sound.this is because sound resumes in ear for 0.1s.
Wiki User
∙ 11y 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.
What causes an echo to be heard?
An echo is heard due to the reflection from a rigid obstacle.
What is the term used to describe sounds that are reflected back to there source?
an echo
How does loudness of an echo in echolocation affect distance?
To our knowledge, the amplitude of the echo isn't used in the determination ofthe range to the target. The amplitude depends on the size, shape, and surfacecomposition of the target, so it's not a reliable indicator of the distance. The distanceis determined primarily by measuring the time delaybefore the echo returns to thesource of the sound.
What do you call the repetition of sound caused by the reflection of sound waves?
echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo echo
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.
What is the minimum distance required to produce a distinct echo in meter?
17.2m
What causes an echo to be heard?
An echo is heard due to the reflection from a rigid obstacle.
Why do you not get echo at all places?
we do not get echo at all the places because everywhere there cannot be the distance of 17.2m b/w the source of sound and the object.
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.
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.
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.
How long can an echo last?
The duration of an echo depends on a few factors such as the distance between the sound source and the reflecting surface, the material and shape of the surface, and the acoustics of the environment. Generally, an echo can last anywhere from a few milliseconds to a few seconds.
How do dolphins use sound waves?
Dolphins emit high pitched ultrasonic waves that reflect off obstacles. The reflected wave reaches the dolphin and the dolphin is able to estimate the distance of the obstacle. (pulse echo detection)
How can an echo be used to find missing objects?
ultra sound echo bounces back from objects and the distance of the obstacle can be calculated from the speed of sound that travels at 340 mt /sec . Missing objects in water or any open place can be located by sending an ultra sound wave and receiving it on any radio receiver.
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.
How is echo heard?
The sound waves travel till a solid vertical obstacle, hit it and bounce back, travelling towards you. When they reach you, you can hear the sound you made, but it's several seconds off, the delay depending on the distance the sound had to cover.
