Acoustic Study | Quadratic Residue Diffuser


A video recording the making of quadratic residue diffuser (QRD) was published on our YouTube channel. It shows the procedures of how to build the QRD using plywood. Meanwhile, an experiment of calculating reverberation time was carried out to test whether the reverberation time of the QRD can reach that of the acoustic panel, which was bought on the market.

Quadratic residue diffuser making credits: Vincent CHOI, Mabel CHUENG, Sinji LAU

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