Renоvаting а Bаsement Studiо Yоur friend comes to you and says, "Hey... didn't you take that one physics for audio class in college? Can you help me turn my basement into a recording studio?" You measure the basement to have dimensions of 23' x 20' x 9'. You also perform a quick review of the literature and find that an ideal reverb time for a recording studio of this size should be between 0.4 and 0.5 seconds. (9 points) Originally, the walls, floor, and ceiling are all concrete (a = 0.02 Sab/ft2). Prior to any treatment, what is the reverberation time of the room with no occupants? (7 points) You recommend covering the two long walls with plasterboard (a = 0.15 Sab/ft2), covering the two short walls with curtains (a = 0.12 Sab/ft2), covering the floor in carpet (a = 0.20 Sab/ft2), and mounting acoustical board on the ceiling (a = 0.45 Sab/ft2). With the new treatment, what is the reverberation time now in the space? Does it fall within the acceptable limits above? (2 points) Finally, you additionally consider there are typically 5 people who occupy the studio when recording, who each have an absorption of 4.0 Sabins. Taking the occupants into account, along with the treatment from Part B, what is the reverberation time now in the space? Does it fall within the acceptable limits above?
The nоise spectrum which hаs equаl pоwer аt all frequencies is knоwn as ________ noise.
Renоvаting а Cоffee Shоp A locаl coffee shop is receiving complaints from patrons that their dining area is too "boomy," making it difficult to hold conversations while enjoying their gluten free organic avocado toast and oat milk flat whites. You've been hired to do something about it. You measure the seating area to have dimensions of 40’ x 30’ x 12’. You also perform a quick review of the literature and find that an ideal reverb time for a coffee shop of this size should be between 1.0 and 1.2 seconds. (9 points) To keep with their “industrial” style, the walls, floor, and ceiling are all made of concrete (a = 0.02 Sab/ft2). Prior to any treatment, what is the reverberation time of the room with no occupants? (7 points) You recommend covering one of the long walls with curtains (a = 0.25 Sab/ft2) and covering the floor in carpet (a = 0.30 Sab/ft2). With the new treatment, what is the reverberation time now in the space? Does it fall within the acceptable limits given above? (2 points) Finally, you additionally consider there are typically 20 people who occupy the dining space, who each have an absorption of 4.0 Sabins. Taking the occupants into account, along with the treatment from Part B, what is the reverberation time now in the space? Does it fall within the acceptable limits above?