WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter http://www.lignoform.com, Feb. 01
Value from the PTB table, not verified
Lignoform Quadrillo door elements with soft fiber core
Lignoform Quadrillo-Türelemente
PTB reference data
Original description
Lignoform Quadrillo door elements with soft fiber core
Material properties
Manufacturer: Lignoform Benken AG
Thickness: 22 mm, 28 mm, 34 mm
Wall distance: 350 mm
Backing: soft fiber core
Application: Cabinet doors for open-plan offices, conference rooms
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.65
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.70 | 0.60 | 0.65 | 0.80 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22 mm, 28 mm, 34 mm · 350 mm · gerillte Holzoberfläche, Rillenachsmass 8 bzw. 16 mm | 0.65 | 0.58 | 0.82 | 0.60 | 0.67 | 0.72 | 0.72 | 0.66 | 0.54 | 0.58 | 0.64 | 0.64 | 0.69 | 0.72 | 0.77 | 0.84 | 0.84 | 0.84 | 0.76 |
Measured values as a table (1 measurement)
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