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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 24 of 37
PTB · Mineral woolαw0.80
Owakustik MF 4 Jura mineral fiber panel
PTB · Mineral woolαw0.65
Owakustik MF 5 Struktura mineral fiber absorber
PTB · Metalαw0.80
OWAtecta L 2516 steel sheet ceiling tile with non-woven
PTB · Metalαw0.35
OWAtecta perfora micro-perforated steel ceiling tile, 0.64% open area
PTB · Mineral woolαw0.50–0.85
Fiberglass duct liner with surface coating
PTB · Mineral woolαw0.50–1.00
Owens-Corning Fiberglass duct liner board
PTB · Mineral woolαw0.25–1.00
Owens-Corning Type 701 flexible insulation board
PTB · Mineral woolαw0.60–1.00
Semirigid insulation board
PTB · Mineral woolαw0.55–1.00
Owens-Corning Type 705 rigid insulation board
PTB · Otherαw0.70
P.G.M. screens for HF
PTB · Reference surfaceαw—
Parquet fixed in asphalt, on concrete
PTB · Reference surfaceαw0.05
Parquet on counterfloor
PTB · Reference surfaceαw0.05
Floors, Parquet Floor
PTB · Reference surfaceαw0.05
Parquet flooring, floating installation
PTB · Mineral woolαw0.60
Acoustical panels, lay-in
PTB · Mineral woolαw0.60
Acoustical panels, lay-in
PTB · Mineral woolαw0.60
PAVAFibre Stria 2 acoustical panels, lay-in
PTB · Metalαw0.55–0.70
Porous sintered metal panel
PTB · Metalαw0.90
Porous sintered metal panel, backed with 4 inch fiberglass
PTB · Fabricαw1.00
Perdue Acoustics LSS-AT fabric-covered panel, 6 pcf rock wool core
PTB · Fabricαw1.00
Perdue Acoustics LSS-RHRF fabric-covered panel, 6 pcf rock wool core
PTB · Fabricαw0.95
Perdue Acoustics LSS-RHRF fabric-covered panel, 8 pcf rockwool core
PTB · Fabricαw0.95
Fabric-covered panel, 8 pcf rockwool core
PTB · Plastic & filmαw0.85
Vinyl-covered panel, 8 pcf rockwool core
PTB · Plastic & filmαw0.85
Vinyl-covered panel, 8 pcf rockwool core
PTB · Stone & concreteαw0.05
Perforated block 30x25x16 cm, 50% open area + whitewash
PTB · Stone & concreteαw0.05
Perforated alveolated block 30x25x19 cm, F/A = 55% + whitewash
PTB · Stone & concreteαw0.05
Perforated alveolar brick for padding 30 x 19 x 25 cm, 60% open area + whitewash
PTB · Stone & concreteαw0.05
Perforated brick 8x24x12 cm with 6 holes, open area = 60% + whitewash
PTB · Reference: audienceαw0.80
Lightly upholstered chair, occupied, front side of seat back 1.5 cm, Basel
α per m² audience area
PTB · Reference: audienceαw0.30
Areas with audience, orchestra or choir including narrow aisles
α per m² audience area
PTB · Plaster & sprayαw0.65
Acoustical plaster, Portland cement-base
PTB · Foamαw0.30–1.00
pinta acoustic Absorber LINEAR melamine foam
PTB · Foamαw0.60–1.00
pinta acoustic PLANO-S melamine foam absorber
PTB · Foamαw0.60–0.75
pinta acoustic PLANO-T melamine foam absorber
PTB · Foamαw0.55–0.90
pinta acoustic RONDO – T melamine foam absorber
PTB · Foamαw0.70–0.95
pinta acoustic WETROOM melamine foam absorber
PTB · Foamαw0.40–1.00
pinta acoustic ACOUSTIC PANEL melamine foam, willtec / non-woven
PTB · Foamαw0.95
pinta acoustic AMBIENT E SPECTRUM melamine foam
PTB · Fabricαw0.55–0.90
pinta acoustic ARTWORK textile-faced melamine foam
PTB · Fabricαw0.55–0.90
pinta acoustic BALANCE ART – Trevira textile absorber
PTB · Fabricαw0.25–0.30
pinta acoustic BALANCE ART Artist textile absorber element
PTB · Fabricαw0.55–0.90
pinta acoustic BALANCE ART Poly200 textile absorber
PTB · Foamαw0.75–1.00
pinta acoustic BALANCE willtec melamine foam with non-woven facing
PTB · Metalαw0.35–0.45
pinta acoustic EXPANDEDLINE MEDIUM expanded metal raft
PTB · Metalαw0.25–0.40
pinta acoustic EXPANDEDLINE MEDIUM expanded metal raft (series 2)
PTB · Metalαw0.25–0.30
pinta acoustic EXPANDEDLINE MEDIUM expanded metal raft
PTB · Metalαw0.30–0.40