Question

answer the following questions in your own word
1-what is an echo? what factors are important to get distinct echo​

Answer 1

Answer:

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 directly proportional to the distance of the reflecting surface from the source and the listener.

The repetition of sound caused by its reflection off a hard surface is known as echo. Factors important to get a distinct echo are: The minimum distance between the source and reflector of sound should be 17 m. The size of reflector must be large enough as compared to the wavelength of the sound wave.