WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA 1968, Tabelle a3.1-3
Value from the PTB table, not verified
Cement-bonded wood wool lightweight panel (DNA 1968, a3.1-3)
PTB reference data
Original description
Cement-bonded wood wool lightweight panel (DNA 1968, a3.1-3)
Material properties
Thickness: 50 mm
Surface weight: 19.5 kg/m²
Flow resistance: 0.24 kPa·s/m²
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.45
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.20 | 0.45 | 0.70 | 0.60 | 0.80 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm · 14,5 kg/m^2 | 0.45 | 0.18 | 0.13 | 0.11 | 0.18 | 0.19 | 0.22 | 0.33 | 0.43 | 0.57 | 0.68 | 0.76 | 0.71 | 0.65 | 0.55 | 0.60 | 0.75 | 0.83 | 0.85 | 0.93 |
Measured values as a table (1 measurement)
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