harmonic resonators?

[sjoko2]

The reason I got interested in designing studio's using natural products was two-fold (I once did a long post on it, but cannot find it):

1. I noticed I always got headaches in some studios, and not in others, so I started noting the differences. I found my headaches could be contributed to one or two elements. One was the use of foams and other wall treatments containing chemicals, the other was faulty aircon units, with insufficient filtering and / or no outside air intake.

2. I found natural diffusion simply to SOUND MUCH BETTER - always - so I started using IT when and wherever I was tracking. Putting bales of hay and straw in tracking rooms, renting loads of broad-leaf plants for diffusion etc.

The "output" of gas from foam products is not very large, but consistent, and over many years. Whilst one or 2 panels in a room will not make to much of a difference to health, whole walls covered with them, like you find in most studios, are simply extremely bad for you. Needless to say, I don't think standard tests account for the possibility of large surface areas covered with such materials. The main 'output' of all the foam / chemically produced panels is this wonderful thing called formaldehyde

 

[ausrock]

Sjoko,

Could you give the name of the product and the suppliers name here in Aust. please.

How are you using the panels...........by that, I mean is there a void behind them or are they mounted hard against a wall, etc.

Peace..............ChrisO

 

[sjoko2]

Ortech Industries Its the stuff they often use in Oz for insulation under tin roofs.

I have used then in different ways for different projects. In my own place I use them as baffles / diffusion panels in the control room, as well as a front for a low frequency trap.

In the tracking room I use them as 4 x 8 diffusion panels, as well as roofing panels for the iso booth, and hinged panel which, when opened up, form a 'roof', which creates a good area for close milking instruments.

I have also just finished the design for a control room where the panels will overlap each other. The left and right walls are in place, they are working on the front wall and soffits at the moment (wall and soffits are made with another straw board, a thick, heavy pressed chopped straw panel - vibration = 0). Sofar we did some tests to decide on monitor placement, and it sounds awsome.
In the above design the first panels leading from the soffits are left natural, straw exposed. The second panel is covered with a 1/4" Birch ply panel, the third one dyed burlap, then ply, burlap etc. Looks awsome.
We are planning in the future to offer the panels 'as is' and framed / covered, as a low cost (and better!) alternative to all the fiber stuff.