WoodLow-frequency absorber

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: JASA 104 (6) Dec 1998

Value from the PTB table, not verified

Wood, 19 mm, over 25 mm compressed fiberglass, screwed to 150 mm concrete block

PTB reference data

Original description

Wood, 19 mm, over 25 mm compressed fiberglass, screwed to 150 mm concrete block

Material properties

Thickness: 19 mm
Backing: 25 mm compressed fiberglass
Mounting: screwed to 150 mm concrete block

Measurement data

Sound absorption

ISO 354 – reverberation chamber

αw
0.10

Frequency values

αp nach ISO 11654

f (Hz)1252505001k2k4k
αp0.200.150.100.050.050.05

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Value from the PTB table, not verified

Terms of use
Measured values as a table (1 measurement)
Wood, 19 mm, over 25 mm compressed fiberglass, screwed to 150 mm concrete block: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαw125 Hz250 Hz500 Hz1000 Hz2000 Hz4000 Hz
Measurement 10.100.200.150.080.050.050.05
Measured values as a table (1 measurement)

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