WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Tectum Classic painted nubby lay-in board
Classic
PTB reference data
Original description
Tectum Classic painted nubby lay-in board
Material properties
Manufacturer: Tectum
Thickness: 3/4 inch
Wall distance: 400 mm
Surface: painted, nubby
Mounting: lay-in
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.45 | 0.90 | 0.95 | 1.00 | 0.95 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 3/4 inch · 0.19 lb/ft² · 400 mm | 0.75 | 0.33 | 0.47 | 0.89 | 0.97 | 1.07 | 0.94 |
Measured values as a table (1 measurement)
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