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Advanced Audio Recording 
Introduction to 2D Cubic Residue Diffusers In another article, I showed the 1Dversion of CRDs. Here I like to show some designs for 2D, similar to the method described here: C2DQRDs. CRD  Examples Two example configurations are shown below using dedicated offsets for the well number (typically (n/n  1) in order to optimize the height:
Cubic residue diffuser using 31 wells per radial period Z = 31  mod ( exp ( sqrt(x*x + y*y) , 3) , 31)
Cubic residue diffuser using 31 wells per radial period Z = 37  mod ( exp ( sqrt(x*x + y*y) , 3) , 37)
Conclusion and Summary Cubic equations can be used to obtain an alternative kind of sound diffusers. Using a radial value for the well number leads to perfect 2Dstructure causing full symmetrical refelctions in all directions..
See the former article about CRDdiffusers See the other diffuser designs

© 2007 J.S. 