WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
WIEHAG Audioline acoustic panel B 18/12, spruce wood
WIEHAG Audioline – Akustikpaneel B 18 / 12
PTB reference data
Original description
WIEHAG Audioline acoustic panel B 18/12, spruce wood
Material properties
Manufacturer: antilärm Weber KG
Thickness: 0.8 in
Wall distance: 2 in, 3.9 in, 7.9 in
Perforation: 16 %
Hole size: 0.5 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 3 variants
NRC
0.95
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.85 | 1.00 | 1.00 | 0.75 | 0.55 |
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| Compare | Value | |
|---|---|---|
| 2 in | NRC0.95 | |
| 3.9 in | NRC1.00 | |
| 7.9 in | NRC1.00 |
NRC: 0.95 (derived from ISO 354 lab data)
Dimensions: 2500 x 200 x 0.8 in
Measured values as a table (3 measurements)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · 50 mm | 0.95 | 0.10 | 0.25 | 0.42 | 0.69 | 0.81 | 1.07 | 1.13 | 1.20 | 1.17 | 1.07 | 1.01 | 0.93 | 0.84 | 0.74 | 0.61 | 0.51 | 0.49 | 0.62 |
| 20 mm · 100 mm | 1.00 | 0.17 | 0.25 | 0.75 | 0.87 | 1.11 | 1.16 | 1.14 | 1.19 | 1.12 | 1.11 | 1.09 | 1.05 | 0.90 | 0.68 | 0.58 | 0.59 | 0.46 | 0.57 |
| 20 mm · 200 mm | 1.00 | 0.47 | 0.75 | 1.29 | 1.21 | 0.99 | 1.10 | 1.15 | 1.19 | 1.11 | 1.19 | 1.14 | 0.98 | 0.92 | 0.75 | 0.62 | 0.59 | 0.34 | 0.62 |
Measured values as a table (3 measurements)
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