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 | 0,10 | 0,27 | 0,75 | 0,98 | 0,84 | 0,63 |
50 mm reverberation space | as | 0,19 | 0,43 | 0,85 | 0,97 | 0,82 | 0,66 |
Percentage of perforations/open surface 11,04 %
hole size Ø 1.5 mm
centre distance 4 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,14 | 0,26 | 0,83 | 0,95 | 0,65 | 0,36 |
50 mm reverberation space | as | 0,21 | 0,48 | 0,93 | 0,89 | 0,65 | 0,32 |
Percentage of perforations/open surface 4.9 %
hole size Ø 1,5 mm
centre distance 6 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,03 | 0,15 | 0,47 | 0,97 | 0,85 | 0,49 |
50 mm reverberation space | as | 0,19 | 0,42 | 0,91 | 0,94 | 0,83 | 0,51 |
Percentage of perforations/open surface 11,04 %
hole size Ø 3 mm
centre distance 8 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,07 | 0,15 | 0,55 | 0,90 | 0,40 | 0,03 |
50 mm reverberation space | as | 0,14 | 0,40 | 0,65 | 0,92 | 0,60 | 0,20 |
Percentage of perforations/open surface 2,7 %
hole size Ø 3 mm
centre distance 16 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,08 | 0,13 | 0,39 | 0,83 | 0,92 | 0,39 |
50 mm reverberation space | as | 0,18 | 0,48 | 0,96 | 0,99 | 0,85 | 0,67 |
Percentage of perforations/open surface 16,95 %
hole size Ø 5 mm
centre distance 10,66 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,05 | 0,16 | 0,51 | 1,02 | 0,53 | 0,05 |
50 mm reverberation | as | 0,22 | 0,62 | 0,98 | 0,86 | 0,62 | 0,31 |
Percentage of perforations/open surface 7,53 %
hole size Ø 5 mm
centre distance 16 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,08 | 0,28 | 0,90 | 0,38 | 0,11 | --- |
50 mm reverberation space | as | 0,26 | 0,84 | 0,58 | 0,34 | 0,18 | 0,07 |
Percentage of perforations/open surface 1,88 %
hole size Ø 5 mm
centre distance 32 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,09 | 0,13 | 0,38 | 0,86 | 0,89 | 0,40 |
50 mm reverberation space | as | 0,19 | 0,51 | 0,96 | 1,01 | 0,87 | 0,67 |
Percentage of perforations/open surface 19,29 %
hole size Ø 8 mm
centre distance 16 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without space room | as | 0,08 | 0,22 | 0,74 | 0,80 | 0,31 | --- |
50 mm reverberation space | as | 0,25 | 0,76 | 0,85 | 0,60 | 0,36 | 0,13 |
Percentage of perforations/open surface 4.82 %
hole size Ø 8 mm
centre distance 32 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,05 | 0,12 | 0,34 | 0,74 | 0,89 | 0,54 |
50 mm reverberation space | as | 0,19 | 0,52 | 0,89 | 1,00 | 0,91 | 0,91 |
Percentage of perforations/open surface 30.17 %
hole size Ø 10 mm
centre distance 16 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,07 | 0,17 | 0,60 | 0,98 | 0,48 | 0,04 |
50 mm reverberation space | as | 0,25 | 0,72 | 0,93 | 0,75 | 0,46 | 0,07 |
Percentage of perforations/open surface 7,54 %
hole size Ø 10 mm
centre distance 32 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 5.4 %
hole size Ø 3 mm
centre distance 8 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,08 | 0,14 | 0,54 | 0,96 | 0,52 | 0,05 |
50 mm reverberation space | as | 0,28 | 0,60 | 0,92 | 0,82 | 0,59 | 0,13 |
Percentage of perforations/open surface 7.08 %
hole size Ø 5 mm
centre distance 11,31 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,08 | 0,29 | 0,88 | 0,36 | 0,11 | --- |
50 mm reverberation space | as | 0,31 | 0,80 | 0,62 | 0,33 | 0,14 | --- |
Percentage of perforations/open surface 1.81 %
hole size Ø 5 mm
centre distance 22,63 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,07 | 0,12 | 0,39 | 0,86 | 0,88 | 0,43 |
50 mm reverberation space | as | 0,18 | 0,52 | 0,94 | 1,00 | 0,85 | 0,69 |
Percentage of perforations/open surface 18.13 %
hole size Ø 8 mm
centre distance 11,31 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,07 | 0,18 | 0,75 | 0,77 | 0,31 | 0,02 |
50 mm reverberation space | as | 0,24 | 0,75 | 0,83 | 0,61 | 0,36 | 0,18 |
Percentage of perforations/open surface 4.64 %
hole size Ø 5 mm
centre distance 22,63 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,07 | 0,11 | 0,37 | 0,77 | 0,89 | 0,58 |
50 mm reverberation space | as | 0,22 | 0,51 | 0,92 | 0,99 | 0,92 | 0,91 |
Percentage of perforations/open surface 28.36 %
hole size Ø 10 mm
centre distance 11,3 mm
design example
Type of installation | f(Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
---|---|---|---|---|---|---|---|
Without reverberation space | as | 0,06 | 0,14 | 0,62 | 0,95 | 0,44 | 0,07 |
50 mm reverberation space | as | 0,27 | 0,69 | 0,92 | 0,76 | 0,48 | 0,26 |
Percentage of perforations/open surface 7.26 %
hole size Ø 10 mm
centre distance 22,63 mm