Am 31.12.2020 um 22:30 schrieb Robert McGregor:
> Hi all,
> 
> I've been building some new acoustic treatments for my recording studio and
> worked out a design for a 2D Quadratic Residue Diffuser (QRD) based on the prime
> number 19, but had no idea what it would actually look like. So, I fired up
> POV-Ray (a year-long hiatus) and after creating a simple 2d array of wood
> lengths I was able to get this pretty decent visualization in no time.
> 
> The physical unit will be 2 x 4 feet and the math says it should diffuse
> soundwaves from ~430Hz to ~5400 Hz, which is just what I need for the rear wall
> of my control room. Now I just need to actually go out to the workshop to cut
> and glue 700+ pieces of wood. Luckily the snow has been very light so far this
> season.
> 
> Cheers,
> Rob
> 
Very nice indeed!

 From colors and mood it reminds a little bit your old catenoid-scene 
(IRTC August 2005). As ever your textures are superb. Can you imagine to 
share your code?

Best regards
Michael

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