question_answer Answers(1) In a theatre or a concert hall, echoes can ruin a performance if the walls and ceiling are not properly designed. Multiple echos make words of a speaker unclear to the audience. Also echos cause disturbance while communicating.
What are the advantages and disadvantages of echoes?
Echoes can be useful or a nuisance. In a concert hall echoes can ruin a performance if the walls and ceiling are not properly designed. If the walls are too hard or too flat they make good reflecting surfaces for the sound waves. Echoes can be used to give vital information.
Why are echoes useful?
Echoes are used by bats, dolphins and fisherman to detect an object / obstruction. They are also used in SONAR (Sound navigation and ranging) and RADAR(Radio detection and ranging) to detect an obstacle.
What are the advantages and disadvantages of the reflection of sound in everyday life?
1. When sound get reflected for multiple times a phenomenon of reverberation is taken place. 2. Because of this,reflected sound get mixed up and a continuous sound of large loudness and less clearness is produced.
Which remedies should you use to reduce the echo in Auditorium?
remedies to be used to reduce the echo in auditorium are:
- carpets can be put on the floor to absorb the sound.
- heavy curtains are put on doors and windows to absorb sound.
- panels made out of sound absorbing materials are put on the walls and ceilings.
What is the minimum distance to hear echo?
Hence, to hear a clear echo, the minimum distance between the reflecting surface and the observer is 17 m.
What is echo effect?
Echo effects are one type of audio effect based on delaying a signal over time.Listeners perceive distinct echoes when the time delay is relatively long (greater than ~30 milliseconds). When a time delay is short, listeners do not perceive echoes. Instead, a single fused sound is perceived.
What is example of echo?
Echo is defined as a sound repeating by sound wave reflection, having a lasting or far reaching impact, or repeating what someone else has said. An example of echo is the repeating of a sound created by footsteps in an empty marble hallway.
What are the disadvantages of sound waves?
Cons or Disadvantages of sound energy:
Sound waves can not be seen and hence we can not pressure waves due to sound energy. Sound can not travel through the vacuum. The sound energy should be below a certain power level, otherwise, it can be annoying to human beings. Sound energy can break the glass.
What is advantage and disadvantage of reverberation?
When a sound is produced in a big hall, its wave reflects from the walls and travel back and forth. Due to this, energy does not reduce and the sound persists. Small amount of reverberation for lesser time helps in adding volume to the programmers. Too much reverberation confuses the programmers and must be reduced.
What are the disadvantages of reverberation?
Disadvantages of Reverberation
This is because he tends to hear both the direct sound and the repeated reflected sound waves. And also if these reverberations will be more excessive, the sound is said to run together with a mere loss of articulation, and it becomes muddy and also garbled.
How do you stop an echo in a building?
Here are some ways to reduce echo in your abode.
- Cover the Floor. Carpets and rugs do more than provide soft padding for your feet.
- Cover the Walls and Windows. Wall and window coverings reduce the amount of sound reflecting off window glass and hard wall surfaces.
- Fill Rooms with Furnishings.
- Install Acoustic Panels.
Should you use to reduce the echo in Auditorium?
1. Panels should be placed on the walls of auditorium. As they absorb sound waves.Carpet should be put on the floor to prevent repetition of sound.
What is the formula for echo?
For example, if the speed of sound in water is 1500 meters per second and the fisherman’s sonar device detects an echo in 0.02 seconds, the distance of the object under water will be d = v*t = 1500 meters per second * 0.02 seconds = 30 meters (back and forth).
What are the causes of echo?
Echoes. An echo is a sound that is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground. Although the direction of the sound changes, the echo sounds the same as the original sound.
What is difference between delay and echo?
Delays are separate copies of an original signal that reoccur within milliseconds of each other. Echoes are sounds that are delayed far enough in time so that you hear each as a distinct copy of the original sound.
How do echoes in a normal room?
An echo is heard when sound is reflected from hard surface such as cliff or tall brick wall. Echo can be heard if the minimum distance between the source of sound and the obstacle is nearly 17.2m. so, in a normal room echoes are not heard. So there is no effect of echoes on quality of that we hear.
How far can an echo travel?
An echo can only be heard by humans when the distance between the source of the sound and the reflecting body is more than 50 feet in distance. A reverberation can occur when a sound wave is reflected off a nearby surface.
Where is echo used?
In computing, echo is a command that outputs the strings that are passed to it as arguments. It is a command available in various operating system shells and typically used in shell scripts and batch files to output status text to the screen or a computer file, or as a source part of a pipeline.
What does the name echo mean?
Reverberating Sound
The name Echo is primarily a gender-neutral name of Greek origin that means Reverberating Sound. In Greek mythology, Echo was a nymph who sorrowed from unrequited love until the only thing that remained was her voice.
What are the two applications of echo?
There are two applications of the echo: Dolphins use echo in order to detect their enemies and the obstacles by emitting the ultrasonic waves and thereby hearing their echo. Echo is also used to image the human organs in medical sciences.
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