Controlling Bass Response in Control Rooms
Part 4
Conclusions
The addition of the first 2.1m barrier had exactly the required
effect, and the action of the smaller ones helped further. The overall
result was quite real and very beneficial to the acoustics of the
room. The concept should be applicable to any control room that
is rectangular or long compared to the width. The one disadvantage
is that there is not enough space to build barriers in control rooms
with a narrow gap between desk and rear wall. The advantages of
the barriers, if there is enough space and they work as I have imagined
they do, are quite numerous. The size of the walls are in proportion
to the room; the ends of walls are towards the corners of the room
where pressure variations are at a maximum and where membrane absorbers
are usually fitted thus aiding damping; it is possible to use surfaces
on the back of the barrier walls for leads, shelves and so on as
long as air movement is not blocked; they are cheap and they work
in direct proportion to sound level as there is no need to overcome
the inertia of swinging mats or membranes. The main advantage, however,
is that it is possible to erect a cheap experimental wall without
causing any disruption to the existing structure. The use of just
one 'wave wall' should show if the idea is working.
We would be interested to hear from anyone who cares to try the
idea out, especially if the results are successful.
Wall Construction
© Brian Gaylor
<<< Part 1
<< Part 2
< Part 3
|