Hi everyone, Dennis Foley from Acoustic Fields.
Today we're going to talk about control room and the glass that is the necessary evil.
So first we have to decide what we're going to use on the other side of the glass, if
we're in the control room then we know that maybe it's a live room on the other side,
maybe it's voice on the other side, we needed to define that because the Live Room obviously
is going to have a lot of pressure.
So we have a Live Room here and our control room here then the glass here, it is going
to have a lot of pressure if we got drums, amplified sound reinforced equipment inside
of here.
If it's just vocals well that's a little bit different story, a lot less pressure so a
little bit different design on the glass here.
So first thing we have to use if we're dealing with a lot of pressure is multiple layers
so we set our cavity up so to speak with two pieces of glass ok so we have all this pressure
here from the Live Room.
Let's just say it is drums striking our glass, so we like to use one inch thick glass because
we found that to be the most rigid so we use one inch thick on both sides and then that
gives us an air buffer between the two pieces of glass and our glass units usually run around
six inches so your air space inside is four with the two ones.
So all the sealed unit built in a frame and then what we do for the inside of it, we line
the inside of it with foam so that controls all the residences inside this cavity because
we do have air inside of it.
So rigidity, the thickness of the glass especially in a Live Room, if it's voice you know we
can get away with a lot less thicker glass, we could use half inch here.
So rigidity is our first requirement, multiple layers, controlling the cabinet residences
by lining the inside of the window cavity with foam and then here's something really
interesting, we've done this before.
What causes noise?
The air moving inside the cabinet so if you take the air out, put a vacuum hose here and
you drain the air out with the back, lower the amount of air in the cabinet, you have
less residences because you create kind of a partial vacuum.
And windows do this all the time, especially in cold and warm environments.
So without air between them you have less movement of the molecule so you have less
interaction with the two pieces of glass going on.
Control Room glass - got to define what we're doing with it because live, voice they all
have different pressure levels.
Multiple layers - make sure you have the right rigidity for the glass, control the internal
cabinet residences because you're creating a cabinet and if you really want to get sophisticated
drop some of their air out of it.
Thank you.