Acoustics type 1

Grooving width 20 mm, length 250 mm
Grid: 81/400 mm

αw = 0.55
Sound absorption class: D

Acoustics type 2

Perforation diameter 30 mm
Grid 81/75 mm

αw = 0.50
Sound absorption class: D

Acoustics type 3

Perforation diameter 20 mm
Grid 40/40 mm

αw = 0.90, with additional slat αw = 0.85
Sound absorption class A, with additional slat sound absorption classe B

Acoustics type 3.1

Stripe-perforation diameter 20 mm
Grid 40/40 mm

αw = 0.75, with additional slat αw = 0.60
Sound absorption class C, with additional slat sound absorption class C

Acoustics type 5

Perforation diameter 15 mm
Grid 40/40 mm

αw = 0.65
Sound absorption class: C

Acoustics type 5.1

Stripe-perforation diameter 15 mm
Grid 40/40 mm

αw = 0.50
Sound absorption class: D

Acoustics type 6

Perforation diameter 9 mm
Grid 20/20 mm

αw = 0.80
Sound absorption class: B

Acoustics type 6.1

Stripe-perforation diameter 9 mm
Grid 20/20 mm

αw = 0.60
Sound absorption class: C

Acoustics type 8

Grooving width 9 mm, length 380 mm
Groove interval 48 mm

αw = 0.50, with additional slat αw = 0.50 
Sound absorption class D, with additional slat sound absorption class D

Acoustics type 8.1

Stripe-grooving width 9, length 380 mm
Groove interval 48 mm

αw = 0.45, with additional slat αw = 0.40 
Sound absorption class D, with additional slat sound absorption class D

Acoustics type 9

Grooving width 5.5 mm, length 380 mm
Groove interval 24 mm

αw = 0.50, with additional slat αw = 0.55 
Sound absorption class D, with additional slat sound absorption class D

Acoustics type 9.1

Stripe-grooving width 5.5 mm, length 380 mm
Groove interval 24 mm

αw = 0.50, with additional slat αw = 0.50 
Sound absorption class D, with additional slat sound absorption class D

Acoustics type 1 - dyn. design

Intensity: 256

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.28 0.34 0.46 0.54 0.45 0.29

Acoustics type 2 - dyn. design

Intensity: 256

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.25 0.25 0.33 0.40 0.35 0.18

Acoustics type 3 - dyn. design

Intensity: 256

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.35 0.51 0.59 0.55 0.50 0.58

Acoustics type 3.1 - dyn. design

Intensity: 448

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.37 0.58 0.67 0.62 0.57 0.66

Acoustics type 5 - dyn. design

Intensity: 256

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.31 0.48 0.51 0.40 0.31 0.43

Acoustics type 5.1 - dyn. design

Intensity: 448

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.33 0.54 0.58 0.45 0.36 0.49

Acoustics type 6 - dyn. design

Intensity: 256

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.31 0.44 0.59 0.55 0.39 0.46

Acoustics type 6.1 - dyn. design

Intensity: 352

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.30 0.41 0.55 0.51 0.36 0.43

Acoustics type 8 - dyn. design

Intensity: 384

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.29 0.38 0.43 0.43 0.38 0.28

Acoustics type 8.1 - dyn. design

Intensity: 384

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.27 0.32 0.36 0.36 0.31 0.24

Acoustics type 9 - dyn. design

Intensity: 384

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.34 0.43 0.52 0.52 0.43 0.33

Acoustics type 9.1 - dyn. design

Intensity: 384

The predicted statistical sound absorption coefficients of acoustic elements with dynamic design are based on the measured values of acoustic types 1 to 9.1.

 

Sound absorption coefficients:

α125  α250  α500  α1000  α2000  α4000 
0.31 0.36 0.44 0.44 0.35 0.27