WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 4-8
Value from the PTB table, not verified
Lightweight chipboard, porous hard foil on both sides, 35 mm
PTB reference data
Original description
Lightweight chipboard, porous hard foil on both sides, 35 mm
Material properties
Thickness: 35 mm
Wall distance: 250 mm
Surface weight: 9.5 kg/m²
Surface: porous hard foil
Flow resistance: 102 Rayl
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.80
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.85 | 0.70 | 0.80 | 0.80 | 0.75 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 mm · 9.5 kg/m^2 · 250 mm · Montiert on Kreuzlattung 24/48 mm, Lattenabstand 625 mm, Air cavity 250 mm, Ränder der Prüffläche seitl. geschlossen · poröse Hartfolie | 0.80 | 0.72 | 0.87 | 0.87 | 0.80 | 0.73 | 0.66 | 0.68 | 0.75 | 0.80 | 0.85 | 0.88 | 0.79 | 0.73 | 0.80 | 0.76 | 0.73 | 0.76 |
Measured values as a table (1 measurement)
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