Übersicht Schallabsorptionsgrade Flächenelement (LFE)
LIGNATUR surface elements with holes or slots and backed sound absorption panels can be used as acoustic elements. The following values show the statistical sound absorption coefficients that can be achieved with LIGNATUR acoustic elements, measured in accordance with DIN EN ISO 354 or predicted based on the available measurement protocols.
Acoustics type 1 LFE
Grooving width 20 mm, length 250 mm
Grid: 81/400 mm
αw = 0.55
Sound absorption class: D
NRC = 0.55
Acoustics type 2 LFE
Perforation diameter 30 mm
Grid 81/75 mm
αw = 0.50
Sound absorption class: D
NRC = 0.60
Acoustics type 3 LFE
Perforation diameter 20 mm
Grid 40/40 mm
αw = 0.90
Sound absorption class A
NRC = 0.85
Acoustics type 3.1 LFE
Stripe-perforation diameter 20 mm
Grid 40/40 mm
αw = 0.75
Sound absorption class C
NRC = 0.70
Acoustics type 5 LFE
Perforation diameter 15 mm
Grid 40/40 mm
αw = 0.65
Sound absorption class: C
NRC = 0.70
Acoustics type 5.1 LFE
Stripe-perforation diameter 15 mm
Grid 40/40 mm
αw = 0.50
Sound absorption class: D
NRC = 0.55
Acoustics type 6 LFE
Perforation diameter 9 mm
Grid 20/20 mm
αw = 0.80
Sound absorption class: B
NRC = 0.75
Acoustics type 6.1 LFE
Stripe-perforation diameter 9 mm
Grid 20/20 mm
αw = 0.60
Sound absorption class: C
NRC = 0.65
Acoustics type 8 LFE
Grooving width 9 mm, length 380 mm
Groove interval 48 mm
αw = 0.50
Sound absorption class D
NRC = 0.45
Acoustics type 8.1 LFE
Stripe-grooving width 9, length 380 mm
Groove interval 48 mm
αw = 0.45
Sound absorption class D
NRC = 0.45
Acoustics type 9 LFE
Grooving width 5.5 mm, length 380 mm
Groove interval 24 mm
αw = 0.50
Sound absorption class D
NRC = 0.55
Acoustics type 9.1 LFE
Stripe-grooving width 5.5 mm, length 380 mm
Groove interval 24 mm
αw = 0.50
Sound absorption class D
NRC = 0.50
Acoustics type 1 - dyn. design LFE
Intensity: 256
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 256
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 256
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 448
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 256
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 448
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 256
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 352
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 384
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 384
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 384
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 LFE
Intensity: 384
The predicted statistical sound absorption coefficients of the acoustic surface elements with dynamic design are based on the measured values of the LIGNATUR surface elements 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 |
