WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 252
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
0.80
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.75 | 0.90 | 0.90 | 0.95 | 1.00 |
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| Compare | Value | |
|---|---|---|
| 200 mm | αw0.80 | |
| 50 mm | αw0.75 |
Weight / density: 2,2 kg / m²
Dimensions: bis 2000 x 1200 mm