Professional Sound - April 2023 | Page 31

Teofilo : You are looking at a photo of the space above the control room ceiling . This space was created primarily to access and maintain the HVAC system for the studio , but it quickly became a convenient way to also run audio cable conduits to all of the Dolby Atmos speakers that will be found around the room as well as on the ceiling . The construction of the ceiling includes 16-gauge steel studs 12 in . on centre with 12 in . of insulation in-between the studs to help control sound from the HVAC unit . The studio being in a commercial unit requires fire sprinklers , as well , so you can see the sprinklers dropped through the ceiling .
Teofilo : This is the studio ’ s live room , seen from an angle of looking back through the black frame into the control room . There are two black frames in this room and they are both to house the two layers of glass that will be used to separate the rooms . The frame in the centre of the photo looks into the control room and the frame to the right looks to the isolation booth . Both frames will have one layer of 1-in . -thick glass and a second layer that is 3 / 4-in . thick with an air gap in the middle . This gap between the glass is just as important for sound isolation as the density of the glass itself .
You can also see the bulkheads in the upper portion of the photo . These bulkheads are not just used for sound and aesthetics , but they also create massive cavities for the air to fill from the HVAC system . There is no metal ductwork that penetrates through into any of the rooms . The bulkheads in each room acts as the ductwork and is lined with duct liner on the inside and encased in two layers of drywall on the outside . In between the studs of the bulkheads is more insulation . All of this is to minimize any sound coming from the HVAC system .
Teofilo : You are looking at the studio ’ s isolation booth . On the left side of the photo you see two door jambs side by side . This is to isolate each room from each other . In the centre , you can see the gap between the two rooms along with the black aluminum track that the glass panels will sit in . When it ’ s all done , the glass will die into the finished floor creating the sense that all three rooms ( control room , live room , and isolation booth ) all flow into each other . The large glass windows also create great visual lines to the engineer sitting in the control room all the way through to the isolation booth .
Where you see wooden MDF boxes inside the isolation booth is where 3 in . of acoustic material will sit on the walls and end up being flush with the boxes that are currently sticking out of the wall . The reason for these boxes is that you want to minimize the size of penetration through the wall to reduce sound bleed . So , at the back of the boxes you have a small hole to fit just the wires through
and then your gang box can sit inside the wooden box .