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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 11 of 37
PTB · GypsumNRC0.15
Perforated gypsum board, 12.5 mm thick, 20.2% open area, 12/20 mm holes
PTB · GypsumNRC0.50
Perforated gypsum board with non-woven and mineral fiber, spacing 200 mm
PTB · GypsumNRC0.45
Perforated gypsum board with non-woven and mineral fiber, spacing 400 mm
PTB · GypsumNRC0.80
Perforated gypsum board with non-woven and mineral fiber mat
PTB · GypsumNRC0.80
Perforated gypsum board with mineral fiber mat
PTB · GypsumNRC0.55
Perforated gypsum board, 9.5 mm, 6% perforation ratio, non-woven, mineral fiber
PTB · GypsumNRC0.35
Perforated gypsum board, irregularly perforated, 6% perforation ratio
PTB · GypsumNRC0.65
Slotted drywall panel, 9.5 mm, 8% open area
PTB · Reference surfaceNRC0.10
Drywall ceiling on battens with large air cavity
PTB · Plaster & sprayNRC0.70
Perforated drywall with acoustic plaster / 6 cm air cavity
PTB · Reference surfaceNRC0.05
Drywall panel, 18 mm, 16 kg/m², 400 mm wall distance
PTB · Reference surfaceNRC0.05
Gypsum board on battening, 9.5 mm, wall distance 100 mm (DNA 1968, c1-1)
PTB · Reference surfaceNRC0.05
Drywall, 1500 x 1250 x 9.5 mm, 8.3 kg/m², on batten, 400 mm wall distance (DNA 1968, c1-3)
PTB · Reference surfaceNRC0.05
Gypsum board on sub-frame (DNA 1968, c1-7)
PTB · Reference surfaceNRC0.05
Drywall, 12.5 mm, 11 kg/m², on 24/48 mm sub-frame, 400 mm wall distance, empty (DNA 1968, c1-9)
PTB · Reference surfaceNRC0.10
Gypsum board on battens with mineral fiber backing
PTB · Reference surfaceNRC0.10
Drywall on furring with mineral fiber mat, 12.5 mm (DNA 1968, c1-10)
PTB · Reference surfaceNRC0.10
Drywall on furring with mineral fiber blanket (DNA 1968, c1-2)
PTB · Reference surfaceNRC0.10
Gypsum board on batten with mineral fiber blanket (DNA 1968, c1-8)
PTB · Reference surfaceNRC0.05
Drywall on frame, 9.5 mm boards, 100 mm empty cavity
PTB · Reference surfaceNRC0.10
Plasterboard on frame, 13 mm boards, 100 mm cavity filled with mineral wool
PTB · Reference surfaceNRC0.05
2*13 mm drywall on steel frame, 50 mm mineral wool in cavity, surface painted
PTB · Reference surfaceNRC0.10
Drywall panel, 18 mm, with 30 mm mineral fiber mat, wall-mounted
PTB · Reference surfaceNRC—
Gypsum board, 12.5 mm, cassette pattern
PTB · Reference surfaceNRC—
Gypsum board, coffered, with mineral fiber backing
PTB · Reference surfaceNRC0.15
Walls, gypsum board, 2 layers total 32 mm
PTB · GypsumNRC0.05
Gypsum board
PTB · GypsumNRC0.10
Drywall on frame, 9.5 mm boards, 100 mm cavity filled with mineral wool
PTB · GypsumNRC0.05
Plasterboard on frame, 13 mm boards, 100 mm empty cavity
PTB · Reference surfaceNRC0.05
Gypsum board: 1.27 cm nailed to 5.1 by 10.2 cm studs 41 cm center to center
PTB · GypsumNRC0.10
Gypsum board, 2 layers, fiberglass reinforced, 25 mm with lighting
PTB · GypsumNRC0.10
Gypsum board, not reinforced, mass per sq m equals [thickness in mm] x 1 kg/sq m
PTB · Reference surfaceNRC0.10
Walls, drywall
PTB · Reference surfaceNRC0.10
Walls, 13 mm drywall on 25 mm studs (no mineral wool)
PTB · Reference surfaceNRC0.15
glass
PTB · Mineral woolNRC0.80
Fiberglass boards and blankets, 2.54 cm glass wool, 2.54 cm airspace
PTB · Mineral woolNRC0.85
Fiberglass boards and blankets, 5.1 cm fiberglass, panels with plastic sheet wrapping and perforated metal facing, as installed
PTB · Mineral woolNRC0.65
Fiberglass boards and blankets, 25.4 mm glass wool, 24 to 48 kg/m², thickness 25,4 mm
PTB · Mineral woolNRC0.80
Fiberglass boards and blankets, 5.1 cm glass wool, 24 to 48 kg/m³, thickness 51 mm
PTB · Reference surfaceNRC0.05
glass window (C/g)
PTB · Reference surfaceNRC0.05
glass window (B) (series 2)
PTB · Reference surfaceNRC0.05
glass window 0.68 kg/m² (series 3)
PTB · Mineral woolNRC0.80
Glass wool blankets with light paint coating, 3 cm air cavity
PTB · Mineral woolNRC0.45
Glass wool blankets, heavy paint layer / 3 cm air cavity
PTB · Reference surfaceNRC0.05
chalk limewash smooth iron
PTB · Reference surfaceNRC—
Smooth concrete, painted or glazed
PTB · Reference surfaceNRC0.05
smooth limewash
PTB · Reference surfaceNRC—