Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Ecophon Industry Modus S fiber absorber, black
Ecophon – Industry Modus S black
PTB reference data
Original description
Ecophon Industry Modus S fiber absorber, black
Material properties
Manufacturer: Ecophon GmbH
Thickness: 1.2 in
Wall distance: 1.2 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.75
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.35 | 0.75 | 0.95 | 1.00 | 0.95 |
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Value from the PTB table, not verified
NRC: 0.75 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|---|
| 30 mm · tKh = 30 mm (totale Konstruktionshöhe) | 0.75 | 0.05 | 0.10 | 0.35 | 0.75 | 0.95 | 1.00 | 0.95 |
Measured values as a table (1 measurement)
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