WoodBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b2.2-11
Value from the PTB table, not verified
Wood wall bracing with mineral fiber blanket
PTB reference data
Original description
Wood wall bracing with mineral fiber blanket
Material properties
Thickness: 1 in
Wall distance: 2 in
Dimensions: 25 x 1.8 in
Backing: mineral fiber blanket quilted on bitumen paper
Surface: planed, unpainted
Application: wall
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.45
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.40 | 0.70 | 0.55 | 0.20 | 0.25 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
NRC: 0.45 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| 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 | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 mm · 50 mm | 0.45 | 0.10 | 0.19 | 0.20 | 0.33 | 0.36 | 0.55 | 0.58 | 0.73 | 0.85 | 0.70 | 0.50 | 0.38 | 0.22 | 0.25 | 0.20 | 0.22 | 0.31 | 0.28 | 0.15 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: