CEN/TC 226
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 72918 | EN 1793-1:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions | Izstrādē |
| 10644 | EN 1793-2:1997 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation | Atcelts |
| 33445 | EN 1793-2:2012 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions | Atcelts |
| 41568 | EN 1793-2:2012/prA1 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions | Izstrādē |
| 61089 | EN 1793-2:2018 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions | Izstrādē |
| 72914 | EN 1793-2:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics - Airborne sound insulation under diffuse sound field conditions | Izstrādē |
| 10645 | EN 1793-3:1997 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum | Izstrādē |
| 72917 | EN 1793-3:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum | Izstrādē |
| 40404 | EN 1793-4:2015 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction | Izstrādē |
| 72916 | EN 1793-4:2025 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - Intrinsic sound diffraction | Izstrādē |
Displaying 141-150 of 415 results.