Question

define reverberation and its control measures​

Answer 1

Reverberation time is a measure of the time required for the sound to "fade away" in an enclosed area after the source of the sound has stopped. When it comes to accurately measuring reverberation time with a meter, the term T60 (an abbreviation for Reverberation Time 60dB) is used.

Answer 2

Answer:

Reverberation is the presence of sound after the source has stopped – similar to an echo. ... To control reverberation, THX cover the rear wall of the auditorium with thick, absorptive material which prevents the direct sound of the screen speakers from reflecting into the seating area.