Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 109)
Original description
Plasterboard 9.5 mm with 6 mm holes in square pattern with approx. 11% perforation. 100 mm from wall with 25 mm mineral wool at front of cavity
ISO 354 – reverberation chamber
αp nach ISO 11654
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Method (354): Measured
