Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 1002)
Original description
55 mm perforated bricks on edge, 78 holes per brick, 11% perforation, no cavity
ISO 354 – reverberation chamber
αp nach ISO 11654
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured
