Back to database
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 25 of 37
PTB · Metalαw0.30–0.40
pinta acoustic EXPANDEDLINE galvanized steel sheet with glass veil
PTB · Metalαw0.25–0.40
Galvanized steel sheet with glass veil, wall-joint-free solution
PTB · Metalαw0.25–0.30
Galvanized steel sheet with cassette insert, 5 mm
PTB · Metalαw0.35–0.45
Galvanized steel sheet, with CASSETTE INSERT, thickness = 5 mm, wall-to-wall solution
PTB · Foamαw0.50–0.65
pinta acoustic cassette inlay willtec FM melamine foam
PTB · Stone & concreteαw0.65–0.70
pinta acoustic phonestop expanded glass granulate ceiling raft
PTB · Stone & concreteαw0.70–0.75
pinta acoustic phonestop expanded glass granulate element
PTB · Stone & concreteαw0.95
pinta acoustic phonestop V expanded glass granulate, coated, with frame
PTB · Stone & concreteαw0.90
pinta acoustic phonestop V expanded glass granulate (series 2)
PTB · Plaster & sprayαw0.65
pinta acoustic phonestop V expanded glass granulate with acoustic plaster
PTB · Foamαw0.30–0.80
pinta acoustic PLANO A2 melamine foam, mineral-impregnated, willtec
PTB · Foamαw0.45–0.80
pinta acoustic PLANO H melamine foam
PTB · Foamαw0.75
pinta acoustic Pyramide willtec melamine foam
PTB · Foamαw1.00
Pinta acoustic Pyramide willtec melamine foam
PTB · Foamαw0.55
Pinta acoustic Pyramide willtec melamine foam (series 2)
PTB · Metalαw0.50–0.65
pinta acoustic QUADROLINE expanded metal with PLANO A2
PTB · Metalαw0.35–0.45
pinta acoustic QUADROLINE expanded metal cassette ceiling
PTB · Metalαw0.50–0.60
pinta acoustic QUADROLINE expanded metal ceiling with PLANO A2, thickness 15 mm
PTB · Metalαw0.65–0.70
pinta acoustic QUADROLINE expanded metal ceiling, thickness 20 mm
PTB · Metalαw0.50–0.60
pinta acoustic SPORTSLINE I with PLANO A2 steel sheet
PTB · Metalαw0.50–0.65
pinta acoustic SPORTSLINE I galvanized steel panel, full surface
PTB · Metalαw0.35–0.45
pinta acoustic SPORTSLINE I galvanized sheet steel
PTB · Metalαw0.65–0.70
pinta acoustic SPORTSLINE I galvanized steel sheet with PLANO A2
PTB · Metalαw0.50–0.65
pinta acoustic SPORTSLINE V expanded metal with PLANO A2, wall-to-wall solution, thickness 10 mm
PTB · Metalαw0.50–0.60
Galvanized expanded metal, with PLANO A2 (thickness = 15 mm), closed ceiling, wall-to-wall solution, thickness 15 mm
PTB · Metalαw0.35–0.45
Galvanized expanded metal with cassette insert (5 mm), closed ceiling
PTB · Metalαw0.65–0.70
Galvanized expanded metal, with PLANO A2 (thickness = 20 mm), closed ceiling, wall-to-wall solution
PTB · Metalαw0.25–0.40
pinta acoustic SQUARELINE raft made of galvanized sheet steel
PTB · Metalαw0.35–0.45
pinta acoustic SQUARELINE steel sheet cassette (raft)
PTB · Metalαw0.30–0.40
pinta acoustic SQUARELINE galvanized steel sheet raft with glass-cellulose non-woven
PTB · Metalαw0.25–0.30
pinta acoustic SQUARELINE galvanized steel raft
PTB · Foamαw0.95
pinta acoustic Waffel Dämm, melamine foam with heavy layer
PTB · Foamαw0.35
pinta acoustic Waffel S35sv polyurethane foam
PTB · Foamαw0.50
pinta acoustic Waffel willtec melamine foam
PTB · Foamαw0.75
pinta acoustic Waffle willtec melamine foam (series 2)
PTB · Foamαw0.35
pinta acoustic Waffel willtec melamine foam (series 3)
PTB · Foamαw0.70–1.00
pinta acoustic WHITELINE melamine foam
PTB · Foamαw0.80–1.00
pinta acoustic willtec absorber RONDO-S
PTB · Otherαw0.10
Walls, panel absorber with low-frequency tuning (example)
PTB · Otherαw0.10
Panel walls
PTB · Fabricαw0.35
Plush, chenille, cotton fabric, 0.417 kg/m², 45 Rayl, stretched flat
PTB · Fabricαw0.85
Plush, chenille, cotton, gathered
PTB · Feltαw0.65
Poliprent T polyester mat
PTB · Reference: audienceαw0.50
Pew cushions, 3 cm
α per m² audience area
PTB · Feltαw0.85
polyester fiber panels
PTB · Stone & concreteαw0.65
Polyklet acoustic perforated brick with Sillan panels
PTB · Stone & concreteαw0.90
Polyklet Akustikstein F2K/F2KNR with mineral fiber
PTB · Stone & concreteαw0.75