WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 253
Value from the PTB table, not verified
Siegfried Keller Siesta slotted panel with mineral fiber
Siesta-Schlitzplatte
PTB reference data
Original description
Siegfried Keller Siesta slotted panel with mineral fiber
Material properties
Manufacturer: Siegfried Keller
Wall distance: approx. 60 mm
Perforation: 24%
Hole size: 4.6 mm
Backing: mineral fiber panel
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.70
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.40 | 0.75 | 0.85 | 0.70 | 0.75 |
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ca. 60 mm | 0.70 | 0.08 | 0.20 | 0.21 | 0.35 | 0.38 | 0.50 | 0.67 | 0.75 | 0.88 | 0.89 | 0.89 | 0.82 | 0.78 | 0.68 | 0.70 | 0.76 | 0.71 | 0.79 |
Measured values as a table (1 measurement)
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