WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
MAkustik MA03 slotted acoustic panel Type 13/3
Type 13/3 – MAkustik MA03 offset slotted
PTB reference data
Original description
MAkustik MA03 slotted acoustic panel Type 13/3
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 320 mm
Perforation: 19%
Hole size: 3 mm
Backing: Acoustic non-woven and 30 mm mineral wool
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 | 0.80 | 0.90 | 0.80 | 0.85 | 0.75 | 0.60 |
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 46 mm · 320 mm | 0.75 | 0.45 | 1.00 | 0.97 | 0.98 | 0.89 | 0.88 | 0.81 | 0.78 | 0.86 | 0.91 | 0.88 | 0.82 | 0.79 | 0.71 | 0.70 | 0.67 | 0.56 | 0.52 |
Measured values as a table (1 measurement)
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