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 8/8 spruce wood
WIEHAG Audioline – Akustikpaneel B 8 / 8
PTB reference data
Original description
WIEHAG Audioline acoustic panel B 8/8 spruce wood
Material properties
Manufacturer: Wiesner-Hager Baugruppe GmbH
Thickness: 0.8 in
Wall distance: 2 in, 3.9 in, 7.9 in
Perforation: 50 %
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 3 variants
NRC
1.05
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.80 | 1.00 | 1.00 | 0.95 | 0.75 |
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| Compare | Value | |
|---|---|---|
| 2 in | NRC1.05 | |
| 7.9 in | NRC1.10 | |
| 3.9 in | NRC1.10 |
NRC: 1.05 (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 | 1.05 | 0.13 | 0.18 | 0.36 | 0.59 | 0.82 | 0.98 | 1.10 | 1.22 | 1.17 | 1.26 | 1.14 | 1.18 | 1.02 | 0.95 | 0.86 | 0.83 | 0.66 | 0.72 |
| 20 mm · 100 mm | 1.10 | 0.24 | 0.28 | 0.69 | 0.76 | 1.08 | 1.18 | 1.19 | 1.26 | 1.20 | 1.19 | 1.10 | 1.18 | 1.13 | 0.95 | 0.81 | 0.77 | 0.59 | 0.57 |
| 20 mm · 200 mm | 1.10 | 0.42 | 0.69 | 1.29 | 1.22 | 1.18 | 1.11 | 1.21 | 1.18 | 0.98 | 1.18 | 1.18 | 1.20 | 1.10 | 0.95 | 0.84 | 0.71 | 0.70 | 0.67 |
Measured values as a table (3 measurements)
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