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Advanced Audio Recording

2D quadratic residue diffuser

Here is a special acoustic diffuser with total symmetry which frequency changes over the radial axis. Starting from a common 2D definition, we use quarters with 15+1 elements.



2D acoustic diffuser with two different frequencies

Acoustic diffuser with dedicated frequency.



QRD - Double Architecture

Now the frequency is slightly lowerde over the axis leading to an expanded designs:

2D acoustic diffuser with two different frequencies
 
Quadratic residue diffuser using smoothed size definitions

 

wall of acoustic diffusers with two different sizes

Finally a window is applied on to the element sizes leading to a smoothed frequency behaviour.

 

wall of acoustic diffusers with two different sizes

Animation of a 2D diffuser:

 

You are encouraged to use the designs for private use.

 See another article about  mosaic diffusers and spiral diffusers

 

 

 

 

© 2004 J.S.