bert stoltenborg wrote:A 3 meter duct with 140 mm wide spacing has 50 dB attenuation in the mid frequencies.
bert stoltenborg wrote:This is a table with measurements, Bob.
It's from Merford and the silencers are of the TROX brand.
Tussenschakeldemping means you put such a thing between source and receiver.
Spleetbreedte = gap width
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