Question

Advantages and Disadvantages of Echoes

Answer 1

Echo is a distinct, reflected sound wave from a surface.

Reflection of sound wave is used in the phenomenon of SONAR.SONAR uses the echo principle by sending out sound waves underwater or through the

human body to locate objects.

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.

Answer 2

Answer:

Advantage: Echoes make horror films more interesting by adding sound effects.

Disadvantage: Echoes can create disturbance if studies are going on.

Explanation:

Echo

An echo is a reflection of the sound wave that arrives at the listener with a delay after the direct sound. The delay is directly proportional to the distance of the reflecting surface from the source and the listener. Typical examples of echo are the echo produced by the bottom of a well, by a building, or by the walls of an enclosed room and an empty room. A true echo is that which has a single reflection of the sound source.

Advantages of echoes

• Echoes are usually used by bats, dolphins and fisherman to detect an object or obstruction.
• Echoes are also used in SONAR (Sound navigation and ranging) and RADAR (Radio detection and ranging) to detect an obstacle.
• SONAR employs the detection of reflections of ultrasonic waves for the detection of an object whereas RADAR employs the detection of reflections of radio waves for the detection of an object.
• Echoes also find applications in medical science like ultrasonography and echo cardiography for imaging of human organs.

Disadvantages of echoes

• In a theatre or a concert hall, echoes can ruin a performance if the walls and ceiling of the halls are not properly designed.
• Multiple echos make words of a speaker unclear to the audience.
• Also echos can cause disturbance while communicating.

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