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Oliver's Audio Passion - 2D QRD N73 built with my "Diffuser Calculator" mobile application, in Shanghai! Video: https://youtu.be/LhbB3s4SByY | Facebook
Oliver's Audio Passion - 2D QRD N23 diffuser made by Branislav G. from Slovakia, using my Diffuser Calculator app 😎 🛒 Application ---> https://play.google.com/store/apps/details?id=acoustic.oliver.diffusers&hl=en_US | Facebook
QRDude: Quadratic Residue Diffuser calculator
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Pomysły z tablicy Schroeder diffusers: 16 | akustyka, ściana z drewna, drewniana ściana