certified according to DIN EN 20354 (ISO) 354
Design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,01 | 0,08 | 0,27 | 0,69 | 0,91 | 0,63 |
50 mm reverberation space | as | 0,17 | 0,42 | 0,92 | 0,94 | 0,82 | 0,75 |
Percentage of perforations/open surfacee
Perforation rotates by 90 degrees – horizontal direction
gap size 12 mm
slot measure 3 mm
centre distance 15 mm
Design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,06 | 0,12 | 0,33 | 0,86 | 0,75 | 0,39 |
50 mm reverberation space | as | 0,22 | 0,50 | 0,95 | 0,84 | 0,67 | 0,44 |
Percentage of perforations/open surface 13.6 %
Perforation rotates by 90 degrees – horizontal direction
gap size 22 mm
slot measure 3 mm
centre distance 25 mm
Design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,06 | 0,13 | 0,38 | 0,80 | 0,89 | 0,58 |
50 mm reverberation space | as | 0,15 | 0,53 | 0,96 | 0,97 | 0,89 | 0,73 |
Percentage of perforations/open surface 20.74 %
Perforation rotates by 90 degrees – horizontal direction
gap size 80 x 3,5 mm
slot measure H 13 mm
centre distance V 100 mm
Design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | --- | --- | --- | --- | --- | --- |
50 mm reverberation space | as | --- | -- | -- | --- | --- | --- |
Percentage of perforations/open surface 21.21 %
Perforation rotates by 90 degrees – horizontal direction
gap size 90 x 3,5 mm
slot measure H 13 mm
centre distance V 110 mm