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 
0.27 0.38 0.48 0.57 0.47 0.31

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 
0.24 0.32 0.43 0.47 0.41 0.22

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 
0.37 0.60 0.67 0.62 0.55 0.66

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 
0.38 0.63 0.71 0.67 0.59 0.70

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 
0.32 0.55 0.56 0.43 0.33 0.46

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 
0.34 0.57 0.60 0.47 0.36 0.50

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 
0.35 0.52 0.67 0.61 0.41 0.55

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 
0.35 0.50 0.66 0.59 0.38 0.54

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 
0.32 0.41 0.45 0.45 0.44 0.33

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 
0.32 0.40 0.43 0.42 0.41 0.31

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 
0.37 0.47 0.55 0.57 0.44 0.35

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 
0.37 0.45 0.53 0.55 0.43 0.35