Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: SOUNDBOARD6, C: Ceilings, D: 50
Original description
Ceilings, 50 mm "Soundboard" (pressed wood curls with air gaps) on 25 mm studs
ISO 354 – reverberation chamber
αp nach ISO 11654
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Method (354): Measured
