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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 16 of 37
PTB · Plaster & sprayNRC0.25
Isover acoustic plaster
PTB · Mineral woolNRC0.65
Isover Climatel S fiberglass construction
PTB · Mineral woolNRC0.60–0.75
Isover Dämmfilz FK-KV, mineral fiber, non-combustible
PTB · Mineral woolNRC0.30–0.35
Isover SPW/F mineral fiber insulation board with steel strips
PTB · Mineral woolNRC0.65–1.05
Isover Facade Insulation Panel SPF1 Mineral Fiber
PTB · Mineral woolNRC0.80–1.00
Isover facade insulation panel SPF3, mineral fiber
PTB · MetalNRC0.80
Isover GEMA metal cassette ceiling with mineral fiber absorber
PTB · MetalNRC0.85–0.90
Isover baffle ceiling with mineral fiber absorber
PTB · Mineral woolNRC0.25
Isover mineral fiber insulation panel SPW/F
PTB · Mineral woolNRC0.75–1.05
Isover mineral fiber facade insulation board SPF2
PTB · Mineral woolNRC0.55–0.75
Isover P3 mineral fiber sound absorber panel, non-combustible
PTB · Mineral woolNRC0.60–1.00
Isover Mineral Fiber Sound Absorption Panel P4/V
PTB · Mineral woolNRC0.70–0.90
Isover mineral fiber sound absorber panel P6/V
PTB · Mineral woolNRC0.60–0.90
Isover mineral fiber blanket SAP/S
PTB · Mineral woolNRC0.70–0.75
Isover mineral fiber ceiling blankets SAP/P
PTB · Mineral woolNRC0.55–0.95
Isover FS mineral fiber panel
PTB · Mineral woolNRC0.65–0.90
Isover mineral fiber panel HS
PTB · Mineral woolNRC0.75–1.05
Isover mineral fiber panel W, Filz 320
PTB · Mineral woolNRC0.60
Isover PB A fiberglass panel
PTB · Mineral woolNRC1.00
Isover PB R fiberglass construction
PTB · Mineral woolNRC0.60–0.85
Isover P3/V mineral fiber sound absorber panel, non-combustible
PTB · Mineral woolNRC0.90–1.00
Isover SPW/FL mineral fiber insulation board
PTB · Reference surfaceNRC0.15
venetian blind
PTB · Glass & transparentNRC0.60
Kaefer Microsorber surface absorber, micro-perforated polyester film
PTB · Glass & transparentNRC0.25–0.65
Kaefer Microsorber micro-perforated polycarbonate foil
PTB · MetalNRC0.50
Kaefer VPR-Modul A1 fiber-free plate resonator
PTB · MetalNRC0.65
Kaefer VPR-Modul B1, fiber-free panel resonator with steel facing
PTB · MetalNRC0.70
Kaefer VPR-Modul B2 (fiber-free compound panel resonator)
PTB · Reference surfaceNRC0.05
Limewash (s.r.)
PTB · Reference surfaceNRC0.05
Lime cement plaster
PTB · FoamNRC0.70–0.95
Wedge-shaped, polyurethane foam panels
PTB · Reference surfaceNRC—
Ceramic tiles with smooth surface
PTB · WoodNRC0.10
pine wood (C)
PTB · Reference: audienceNRC0.20
Church pews without platform and upholstery
α per m² audience area
PTB · Reference surfaceNRC0.45
Clinker concrete, no surface finish, 800 kg/m³
PTB · Mineral woolNRC0.75–0.80
Knauf Acoustone mineral fiber panels
PTB · GypsumNRC0.60–0.65
Knauf D 127 acoustic panel, square-hole block pattern 12/25Q, ball-impact resistant
PTB · GypsumNRC0.55–0.70
Knauf Acoustic Design Panel D 127, block-pattern perforation 8/18R
PTB · GypsumNRC0.70–0.75
Knauf Acoustic Design Panel D 127 block-pattern perforation 8/18R B6
PTB · GypsumNRC0.50–0.60
Knauf Akustikdesignplatte D 127 perforated 15/30R
PTB · GypsumNRC0.75
Knauf acoustic design panel D 127 perforated gypsum board
PTB · GypsumNRC0.55–0.60
Knauf D 127 acoustic design panel, 10/23R perforation
PTB · GypsumNRC0.75
Knauf Acoustic Design Panel D 127, 10/23R perforation (series 2)
PTB · GypsumNRC0.75–0.80
Knauf Acoustic Design Panel D 127, 12/25R perforation
PTB · GypsumNRC0.75–0.80
Knauf Akustikdesignplatte D 127, 15/30R perforation
PTB · GypsumNRC0.65–0.75
Knauf Akustikdesignplatte D 127 perforation 6/18R with mineral fiber
PTB · GypsumNRC0.70
Knauf acoustic design panel D 127 perforation 8/12/50R
PTB · GypsumNRC0.55–0.60