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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 19 of 37
PTB · FabricNRC0.30
Linen texture fabric, stretched smooth
PTB · Stone & concreteNRC0.80
Liakustik Liapor sound absorber blocks for track construction
PTB · WoodNRC0.65
Lignoform Perfoplatte 16/16 blind hole 12/3 (ball-impact resistant)
PTB · WoodNRC0.65
Lignoform perforated MDF panel for gym walls
PTB · WoodNRC0.80
Lignoform perforated gym panel, ball-impact resistant
PTB · WoodNRC0.45–0.55
Lignoform Quadrillo Micro-Perfo wood panel
PTB · WoodNRC0.65
Lignoform Quadrillo door elements with soft fiber core
PTB · WoodNRC0.60
Lignoform Quadrillo-Compact acoustic panel
PTB · WoodNRC0.70–0.75
Lignoform Quadrillo-Compact audio acoustic panel
PTB · WoodNRC0.65
Lignoform Quadrillo ceiling tile with acoustic non-woven, spacing 150 mm
PTB · WoodNRC0.65
Lignoform Quadrillo ceiling tile with acoustic non-woven, spacing 350 mm
PTB · WoodNRC0.70–0.80
Lignoform Quadrillo-Sandwich acoustic panel
PTB · WoodNRC0.60–0.65
Lignoform Quadrillo-Solo wood panel with acoustic non-woven
PTB · Plastic & filmNRC0.05
Linoleum (Meyer, Kirchenakustik)
PTB · Reference surfaceNRC0.15
linoleum (RAMSETE)
PTB · Reference surfaceNRC0.05
Floors, linoleum on concrete
PTB · Reference surfaceNRC0.05
Linoleum or vinyl stuck to concrete
PTB · Reference surfaceNRC0.05
linoleum floor (m)
PTB · Reference surfaceNRC0.05
Floors, linoleum directly on concrete
PTB · Stone & concreteNRC1.05
Perforated brick with mineral fiber mat backing
PTB · Stone & concreteNRC0.20
Perforated brick, 40% perforation ratio
PTB · Stone & concreteNRC0.15
Perforated brick, 250 x 125 x 50 mm, glazed, 17% perforation ratio
PTB · Stone & concreteNRC0.35
Perforated brick, glazed, with mineral fiber backing
PTB · Reference surfaceNRC0.60
Ventilation grille (approx. per sq. m.)
PTB · Reference surfaceNRC0.35
ventilation openings
PTB · Reference surfaceNRC0.15
Ventilation pipes
PTB · MetalNRC0.95
Luxalon 130 B perforated aluminum panel with mineral wool
PTB · MetalNRC0.45
Luxalon 180 B aluminum panel with mineral wool backing
PTB · MetalNRC1.00
Luxalon 180 B perforated aluminum panel with mineral fiber
PTB · MetalNRC0.75
Luxalon 225 C perforated aluminum panels with acoustic non-woven
PTB · MetalNRC0.95
Luxalon 80 B perforated aluminum panel with mineral fiber
PTB · MetalNRC0.85
Luxalon 80 B aluminum panel with mineral fiber absorber
PTB · MetalNRC0.75
Luxalon 80 B perforated aluminum sheet panels
PTB · MetalNRC0.80
Luxalon CLIP-IN perforated metal cassette with mineral wool
PTB · MetalNRC1.00
Luxalon LAY-IN/LAY-ON perforated metal cassette with mineral wool
PTB · MetalNRC0.80
Luxalon LAY-IN/LAY-ON perforated metal cassette with mineral wool (series 2)
PTB · WoodNRC0.85
M+G slotted panel made of plywood/fiberboard
PTB · GypsumNRC0.85
Maibach M 200 TS fiber absorber in gypsum board cassette
PTB · WoodNRC0.80
MAkustik acoustic panel Type 13/3 MA04 slotted
PTB · WoodNRC0.90
MAkustik acoustic panel Type 6/2 slotted
PTB · WoodNRC0.95
MAkustik acoustic panel Type 6/2 MA04 slotted
PTB · WoodNRC0.80
MAkustik Type 8/16 acoustic panel with mineral wool
PTB · WoodNRC0.85
MAkustik acoustic panel Type 9/2, slotted
PTB · WoodNRC0.70
MAkustik MA01 acoustic panel, 6 mm perforation, 11% open area, spacing 0 mm
PTB · WoodNRC0.65
MAkustik MA01 acoustic panel, 6 mm perforation, 11% open area, spacing 320 mm
PTB · WoodNRC0.85
MAkustik MA01 acoustic panel Type 8/16, spacing 170 mm
PTB · WoodNRC0.80
MAkustik MA01 acoustic panel Type 8/16, spacing 320 mm
PTB · WoodNRC0.70