DIY wood diffusers


I'm having a freind who is a master wood worker make me some wood diffusers.Is there anyone who can give me exact mesurements for proven performance.I'm bassing them on a 2'x4' frame.I would like to know what depth I should make them and how deep and wide each cavity should be..
spaz
Buconero,

Thanks for the link to see these panels. I made something similar in ways except the inverse. I built angular enclosures around my ceiling mounted video screen and a soffit overhead surrounding the ductwork. The enclousers are built of birch plywood and mounted to the studs. In between the studs, pre existing drywall and enclosures are brass Audiopoints and Apcd coupling discs. The panels are then tensioned and secured to the studs with brass wood screws,painted and finished out.

Instead of the 90 degree angles that were there or would have been built around the screen box I used angles of 38 and 52 degrees. Some of these angles face towards me or away from me. My idea was to mitigate cancelation caused by 90degree angles. Use all the energy present in the room and to refocus and reuse the energy. Excess would be redirected by the orentation of the points and coupled and dissapated thru the room supports. My result was both musical and focused without excess brightness.

From the photo in the Times it appears to me that there is a wood veneer applied over what maybe a softer surface{for a slight amount of absorption] to make the panels. The sharks teeth described look like a slight variation of a point used for audio coupling. Wonder where they got that idea for a shape from? The conical shape may collect, capture and diffuse different frequencys at varying angles of departure. All the energy generated would be present only reused and refocused.

I wonder what material the conical points that make up their panels are made of? Wood, brass, or bronze or a combination of patterns made of such materials?

The Musikverein in Vienna is made up of mostly hard irregular surfaces contradictory to many designs and materials used today. Perhaps Alice Tully hall is revisiting and reusing some of these "outdated" ideas and materials. Tom

I believe the NYT article says that the veneer is very thin (thickness of two sheets of paper) and is mounted to sound absorbing panels that constitute the walls.
How about Charles Altmann approach
See the photo here
used by Mike Pranka of Dynavector Systems, New Zealand.

Mariusz
http://www.digitalaudiorock.com/cgi-bin/qrd.cgi

Here is a link to a calculator to design your quadratic diffusor.

John C.
Will quadratic diffusers make your room sound bigger.As I hear this statement often..