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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 & sprayαw0.25
Isover acoustic plaster
PTB · Mineral woolαw0.55
Isover Climatel S fiberglass construction
PTB · Mineral woolαw0.50–0.70
Isover Dämmfilz FK-KV, mineral fiber, non-combustible
PTB · Mineral woolαw0.35–0.40
Isover SPW/F mineral fiber insulation board with steel strips
PTB · Mineral woolαw0.60–1.00
Isover Facade Insulation Panel SPF1 Mineral Fiber
PTB · Mineral woolαw0.70–1.00
Isover facade insulation panel SPF3, mineral fiber
PTB · Metalαw0.85
Isover GEMA metal cassette ceiling with mineral fiber absorber
PTB · Metalαw0.80–0.85
Isover baffle ceiling with mineral fiber absorber
PTB · Mineral woolαw0.30
Isover mineral fiber insulation panel SPW/F
PTB · Mineral woolαw0.70–1.00
Isover mineral fiber facade insulation board SPF2
PTB · Mineral woolαw0.40–0.75
Isover P3 mineral fiber sound absorber panel, non-combustible
PTB · Mineral woolαw0.50–1.00
Isover Mineral Fiber Sound Absorption Panel P4/V
PTB · Mineral woolαw0.55–0.90
Isover mineral fiber sound absorber panel P6/V
PTB · Mineral woolαw0.45–0.90
Isover mineral fiber blanket SAP/S
PTB · Mineral woolαw0.65–0.70
Isover mineral fiber ceiling blankets SAP/P
PTB · Mineral woolαw0.50–1.00
Isover FS mineral fiber panel
PTB · Mineral woolαw0.60–0.95
Isover mineral fiber panel HS
PTB · Mineral woolαw0.70–1.00
Isover mineral fiber panel W, Filz 320
PTB · Mineral woolαw0.40
Isover PB A fiberglass panel
PTB · Mineral woolαw1.00
Isover PB R fiberglass construction
PTB · Mineral woolαw0.45–0.75
Isover P3/V mineral fiber sound absorber panel, non-combustible
PTB · Mineral woolαw0.90–1.00
Isover SPW/FL mineral fiber insulation board
PTB · Reference surfaceαw0.15
venetian blind
PTB · Glass & transparentαw0.60
Kaefer Microsorber surface absorber, micro-perforated polyester film
PTB · Glass & transparentαw0.15–0.65
Kaefer Microsorber micro-perforated polycarbonate foil
PTB · Metalαw—
Kaefer VPR-Modul A1 fiber-free plate resonator
PTB · Metalαw—
Kaefer VPR-Modul B1, fiber-free panel resonator with steel facing
PTB · Metalαw—
Kaefer VPR-Modul B2 (fiber-free compound panel resonator)
PTB · Reference surfaceαw0.10
Limewash (s.r.)
PTB · Reference surfaceαw—
Lime cement plaster
PTB · Foamαw0.55–1.00
Wedge-shaped, polyurethane foam panels
PTB · Reference surfaceαw—
Ceramic tiles with smooth surface
PTB · Woodαw0.10
pine wood (C)
PTB · Reference: audienceαw0.20
Church pews without platform and upholstery
α per m² audience area
PTB · Reference surfaceαw0.20
Clinker concrete, no surface finish, 800 kg/m³
PTB · Mineral woolαw0.70–0.75
Knauf Acoustone mineral fiber panels
PTB · Gypsumαw0.55–0.60
Knauf D 127 acoustic panel, square-hole block pattern 12/25Q, ball-impact resistant
PTB · Gypsumαw0.55
Knauf Acoustic Design Panel D 127, block-pattern perforation 8/18R
PTB · Gypsumαw0.55–0.70
Knauf Acoustic Design Panel D 127 block-pattern perforation 8/18R B6
PTB · Gypsumαw0.50–0.55
Knauf Akustikdesignplatte D 127 perforated 15/30R
PTB · Gypsumαw0.60–0.70
Knauf acoustic design panel D 127 perforated gypsum board
PTB · Gypsumαw0.50
Knauf D 127 acoustic design panel, 10/23R perforation
PTB · Gypsumαw0.65–0.70
Knauf Acoustic Design Panel D 127, 10/23R perforation (series 2)
PTB · Gypsumαw0.60–0.75
Knauf Acoustic Design Panel D 127, 12/25R perforation
PTB · Gypsumαw0.70–0.75
Knauf Akustikdesignplatte D 127, 15/30R perforation
PTB · Gypsumαw0.45–0.60
Knauf Akustikdesignplatte D 127 perforation 6/18R with mineral fiber
PTB · Gypsumαw0.50–0.60
Knauf acoustic design panel D 127 perforation 8/12/50R
PTB · Gypsumαw0.50–0.55