pEUTZ MEASUREMENT OF SOUND ABSORPTION IN A REVERBERATION ROOM ACCORDING TO ISO 354:2003 principal: Aktav Acoustics m TESTING RvA L 3341 Absorb versie 4.3.1, mode 7 file: a 1597 E#:800-835 F#:947-982 A#:983 Ti = 16,2 °C T2= 16,1 °C p, = 102,3 kPa p2 = 102,2 kPa h, = 50,1 % h2 = 48,6 % type: Parmephon® wallpanel 20 mm manufacturer: Aktav Acoustics material: glasswool finish front: glasstissue + fabric finish back glass tissue finish edges plastered volume reverberation room: 214 m surface area sample: 10,8 m2 heigth of the construction: 0,060 m measured at: laboratory conditions signal: broad-band noise bandwidth: 1/3 octave a* (ISO 11654) = 0,75(MH) NRC (ASTM - C423) = 0,85 adhesive tape test specimen - fl'oor of the reverberation room publication is permitted for the entire page only

MEASUREMENT OF SOUND ABSORPTION IN A REVERBERATION ROOM ACCORDING TO ISO 354:2003 principal: Aktav Acoustics ®L JESTING RvA 1 3341 Absorb versie 4.3.1, mode 7 file: al597 E#:800-835 F#:873-908 A#:909 T, = 16,2 °C T2= 15,9 °C p, = 102,3 kPa p2 = 102,3 kPa h, = 50,1 % h2= 53,0 % type: manufacturer: material: panel sizes: total thickness: finish front: finish back finish edges total mass: Parmephon® wallpanel 40 mm Aktav Acoustics glasswool 1200 x 600 mm 40 mm glasstissue + fabric glass tissue plastered with a groove 6,5 kg/m2 volume reverberation room: 214 m3 surface area sample: 10,8 m2 heigth...