Reflection of Sound, ECHO, REVERBERATION
Reflection of Sound The bouncing back of the sound wave on striking a surface such as wall, metal sheet, plywood, etc. is called the reflection of the sound wave. Sound bounces back a solid or a liquid like a rubber ball bounces back a wall. Sound gets reflected at the surface of a solid or liquid. Like light, it follows the laws of reflection. The direction in which sound is incident and is reflected make equal angels with the normal to the reflecting surface at the point of incidence. All three are in the same plane surface. An obstacle of large size which may be polished or rough is needed for the reflection of sound waves. Audible sound has a wide frequency range that is from 20 Hz to 17000 Hz. And also has a wide range of frequency that is from 20 mm to 17 m. so, the overall nature of the reflection varies according to the texture and structure of the surface. The reflection of sound can affect the acoustic space. In acoustics, reflection causes echoes and is