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PTB – Physikalisch-Technische Bundesanstalt
Reference data from the PTB database for sound absorption coefficients. These data provide a planning baseline and come from standardised measurements.
1,746 products
Page 36 of 37
PTB · Otherαw0.30
Walls, panel with slot 4 mm, on 25 mm studs with mineral wool
PTB · Otherαw0.40
Walls, panel with slot 8 mm, on 25 mm studs with mineral wool
PTB · Otherαw0.65
Walls, panel with slot 49 mm, on 25 mm studs with mineral wool
PTB · Otherαw0.65
Walls, panel with slot 270 mm, on 25 mm studs with mineral wool
PTB · Otherαw0.10
Walls, panel without slots, on 25 mm studs with mineral wool
PTB · Reference surfaceαw0.05
Wall rafts in reverberation chamber
PTB · Fabricαw0.15
tapestry (B)
PTB · Fabricαw0.80
Wall carpet with mineral fiber and air cavity
PTB · Reference surfaceαw—
water (swimming pool)
PTB · Reference surfaceαw—
Misc, water surface
PTB · Reference surfaceαw—
Water surface, as in a swimming pool
PTB · Reference surfaceαw—
Water surface in swimming pool
PTB · Mineral woolαw0.10–0.25
Fiberboard, 1/2 inch normal soft, mounted against solid backing
PTB · Fabricαw0.65
Soft foam panels with textured fabric
PTB · Woodαw0.70–0.75
WIEHAG Audioline acoustic panel B 18/12, spruce wood
PTB · Woodαw0.85–0.95
WIEHAG Audioline acoustic panel B 8/8 spruce wood
PTB · Woodαw0.75
Wilhelmi Imagio wooden acoustic panel, 50 mm ceiling void
PTB · Woodαw0.45–0.50
Wilhelmi acoustic panel Variantex-Rupfen
PTB · Woodαw0.65
Wilhelmi Imagio wood acoustic panel, 400 mm ceiling void
PTB · Woodαw0.70
Wilhelmi Imagio wood acoustic panel, 200 mm ceiling void (series 2)
PTB · Mineral woolαw0.40–0.75
Wilhelmi Mikropor acoustic foil Type V
PTB · Metalαw0.55
Wilhelmi Mikropor M metal acoustic panel with cooling system
PTB · Metalαw0.75
Wilhelmi Mikropor M metal acoustic panel without backing
PTB · Woodαw0.55–0.60
Wilhelmi Mikropor S acoustic panel with acoustic non-woven
PTB · Woodαw0.45–0.50
Wilhelmi Mikropor S wood acoustic panel with sound insulation backing
PTB · Woodαw0.50
Wilhelmi Mikropor SP acoustic panel, chipboard, painted
PTB · Woodαw0.60
Wilhelmi Mikropor ST acoustic panel (chipboard, non-woven, lacquer)
PTB · Woodαw0.15
Wilhelmi Mikropor ST wood wool acoustic panel
PTB · Woodαw0.50
Wilhelmi Mikropor UB acoustic panel made of vermiculite
PTB · Woodαw0.35
Wilhelmi panels with Widoplan and mineral fiber
PTB · Woodαw0.65
Wilhelmi Variante X FWA acoustic system, seamless
PTB · Woodαw0.55
Wilhelmi Variante X FWA seamless ceiling and wall system
PTB · Woodαw0.60
Wilhelmi Variante X FWA Normalstruktur ceiling and wall system
PTB · Woodαw0.70
Wilhelmi Variante X wood acoustic panel, fine chipboard facing
PTB · Woodαw0.65
Wilhelmi Variante X wood acoustic panel (series 2)
PTB · Woodαw0.60
Wilhelmi Variante X wood acoustic panel (series 3)
PTB · Woodαw0.60
Wilhelmi Variantex 05 SAL wood fiber acoustic panel
PTB · Woodαw0.35
Wilhelmi Widoplan panels with 15 mm joint
PTB · Woodαw0.35
Wilhelmi Widoplan panels with 15 mm joint, mineral fiber backing
PTB · Woodαw0.60
Wilhelmi Variantex 05 wood fiber absorber
PTB · Woodαw0.10–0.15
Wilhelmi acoustic panel Variantex 09 panel absorber
PTB · Woodαw0.55
Wilhelmi-Mikropor-S acoustic panel for ceilings
PTB · Reference surfaceαw0.40
wool tapestry (C)
PTB · Woodαw0.50
Woodacoustic Venables (Type A)
PTB · Woodαw0.35
Woodacoustic Venables (Type B)
PTB · Woodαw0.05
Woodacoustic Venables (Type E)
PTB · Woodαw0.50
Woodacoustic Venables (Type C)
PTB · Woodαw0.35