In a closed space, our perception of acoustic comfort is directly related to a standardized rate of reverberation based on how the room is typically used. Reverberation time is how long it takes for the sound pressure level in a room to decay or “fade away” by 60 decibels after the sound source is turned off. The volume of the room and the presence of any sound-absorbing materials will obviously affect this rate; so will the frequencies of the sound being emitted. We measure reverberation time in seconds; we also use the alpha sabine absorption coefficient to measure the room’s sound absorbing performance. Following the results of this evaluation, we will send you our recommendations including material and installation costs, if applicable .