StoneBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b2.1-18
Perforated glazed stoneware molded element
PTB reference data
Original description
Perforated glazed stoneware molded element
Material properties
Thickness: 100 mm to 120 mm
Dimensions: 240 × 240 mm
Hole size: conical from 18 mm
Surface: glazed
Application: wall
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.81
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 1.05 | 1.15 | 0.80 | 0.60 | 0.75 |
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| Compare | Value |
|---|---|
| αw0.81 | |
| αw0.08 |
Dimensions: 240 x 240 mm