FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Value from the PTB table, not verified
Sonex foam panel, 3 inch (series 2)
Sonex
PTB reference data
Original description
Sonex foam panel, 3 inch (series 2)
Material properties
Thickness: 3 inch
Wall distance: 0 in
Application: floor
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.85
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.45 | 1.00 | 1.00 | 1.00 | 1.00 |
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Value from the PTB table, not verified
NRC: 0.85 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 3-in · 0 | 0.85 | 0.14 | 0.43 | 0.98 | 1.03 | 1.00 | 1.00 |
Measured values as a table (1 measurement)
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