WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
MAkustik MA07 acoustic panel, square perforated
Type 8/16 – MAkustik MA07 square perforated
PTB reference data
Original description
MAkustik MA07 acoustic panel, square perforated
Material properties
Manufacturer: MAkustik
Thickness: 46 mm
Wall distance: 320 mm
Perforation: 25%
Hole size: 8 mm side length, 16 mm spacing
Backing: acoustic non-woven, 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.90
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.80 | 0.90 | 1.00 | 0.90 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 46 mm · 320 mm | 0.90 | 0.39 | 0.48 | 0.63 | 0.69 | 0.78 | 0.87 | 0.92 | 0.87 | 0.94 | 0.96 | 0.99 | 0.98 | 0.93 | 0.88 | 0.85 | 0.83 | 0.83 | 0.77 |
Measured values as a table (1 measurement)
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