WoodHighly absorbent

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 252

Value from the PTB table, not verified

Ernst Schmelze Eco-Phondraht wood fiber absorber, slotted, 40% open area

Eco-Phondraht

PTB reference data

Original description

Ernst Schmelze Eco-Phondraht wood fiber absorber, slotted, 40% open area

Material properties

Manufacturer: Ernst Schmelze KG
Thickness: 17 mm
Wall distance: 50 mm, 200 mm
Perforation: approx. 40%
Backing: mineral fiber mat

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 2 variants

αw
0.95

Frequency values

αp per ISO 11654

f (Hz)1252505001k2k4k
αp0.350.750.900.900.951.00

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CompareValue
200 mmαw0.95
50 mmαw0.80

Weight / density: 2,2 kg / m²

Dimensions: bis 2000 x 1200 mm

Terms of use
Measured values as a table (2 measurements)
Ernst Schmelze Eco-Phondraht wood fiber absorber, slotted, 40% open area: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαw100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz
17 mm · 2,2 kg / m² · 50 mm0.800.150.220.270.410.510.590.720.870.920.980.951.000.930.921.001.031.001.04
17 mm · 2,2 kg / m² · 200 mm0.950.200.320.580.600.750.880.950.920.870.870.880.990.990.920.980.921.001.04
Measured values as a table (2 measurements)

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