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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 · OtherNRC0.45
Walls, panel with slot 4 mm, on 25 mm studs with mineral wool
PTB · OtherNRC0.60
Walls, panel with slot 8 mm, on 25 mm studs with mineral wool
PTB · OtherNRC0.75
Walls, panel with slot 49 mm, on 25 mm studs with mineral wool
PTB · OtherNRC0.70
Walls, panel with slot 270 mm, on 25 mm studs with mineral wool
PTB · OtherNRC0.15
Walls, panel without slots, on 25 mm studs with mineral wool
PTB · Reference surfaceNRC0.05
Wall rafts in reverberation chamber
PTB · FabricNRC0.15
tapestry (B)
PTB · FabricNRC0.80
Wall carpet with mineral fiber and air cavity
PTB · Reference surfaceNRC—
water (swimming pool)
PTB · Reference surfaceNRC—
Misc, water surface
PTB · Reference surfaceNRC—
Water surface, as in a swimming pool
PTB · Reference surfaceNRC—
Water surface in swimming pool
PTB · Mineral woolNRC0.10–0.20
Fiberboard, 1/2 inch normal soft, mounted against solid backing
PTB · FabricNRC0.80
Soft foam panels with textured fabric
PTB · WoodNRC0.95–1.00
WIEHAG Audioline acoustic panel B 18/12, spruce wood
PTB · WoodNRC1.05–1.10
WIEHAG Audioline acoustic panel B 8/8 spruce wood
PTB · WoodNRC0.70
Wilhelmi Imagio wooden acoustic panel, 50 mm ceiling void
PTB · WoodNRC0.55–0.60
Wilhelmi acoustic panel Variantex-Rupfen
PTB · WoodNRC0.65
Wilhelmi Imagio wood acoustic panel, 400 mm ceiling void
PTB · WoodNRC0.65
Wilhelmi Imagio wood acoustic panel, 200 mm ceiling void (series 2)
PTB · Mineral woolNRC0.45–0.75
Wilhelmi Mikropor acoustic foil Type V
PTB · MetalNRC0.65
Wilhelmi Mikropor M metal acoustic panel with cooling system
PTB · MetalNRC0.75
Wilhelmi Mikropor M metal acoustic panel without backing
PTB · WoodNRC0.55
Wilhelmi Mikropor S acoustic panel with acoustic non-woven
PTB · WoodNRC0.55–0.60
Wilhelmi Mikropor S wood acoustic panel with sound insulation backing
PTB · WoodNRC0.60
Wilhelmi Mikropor SP acoustic panel, chipboard, painted
PTB · WoodNRC0.60
Wilhelmi Mikropor ST acoustic panel (chipboard, non-woven, lacquer)
PTB · WoodNRC0.15
Wilhelmi Mikropor ST wood wool acoustic panel
PTB · WoodNRC0.55
Wilhelmi Mikropor UB acoustic panel made of vermiculite
PTB · WoodNRC0.55
Wilhelmi panels with Widoplan and mineral fiber
PTB · WoodNRC0.60
Wilhelmi Variante X FWA acoustic system, seamless
PTB · WoodNRC0.55
Wilhelmi Variante X FWA seamless ceiling and wall system
PTB · WoodNRC0.55
Wilhelmi Variante X FWA Normalstruktur ceiling and wall system
PTB · WoodNRC0.65
Wilhelmi Variante X wood acoustic panel, fine chipboard facing
PTB · WoodNRC0.60
Wilhelmi Variante X wood acoustic panel (series 2)
PTB · WoodNRC0.65
Wilhelmi Variante X wood acoustic panel (series 3)
PTB · WoodNRC0.65
Wilhelmi Variantex 05 SAL wood fiber acoustic panel
PTB · WoodNRC0.55
Wilhelmi Widoplan panels with 15 mm joint
PTB · WoodNRC0.50
Wilhelmi Widoplan panels with 15 mm joint, mineral fiber backing
PTB · WoodNRC0.65
Wilhelmi Variantex 05 wood fiber absorber
PTB · WoodNRC0.15
Wilhelmi acoustic panel Variantex 09 panel absorber
PTB · WoodNRC0.55
Wilhelmi-Mikropor-S acoustic panel for ceilings
PTB · Reference surfaceNRC0.40
wool tapestry (C)
PTB · WoodNRC0.55
Woodacoustic Venables (Type A)
PTB · WoodNRC0.40
Woodacoustic Venables (Type B)
PTB · WoodNRC0.05
Woodacoustic Venables (Type E)
PTB · WoodNRC0.60
Woodacoustic Venables (Type C)
PTB · WoodNRC0.45