CEN/TC 211
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 80900 | prEN ISO 21388-1 | Acoustics - Hearing aid fitting management (HAFM) - Part 1: General process (ISO/DIS 21388-1:2025) | Aptauja |
| 23317 | prEN ISO 3747 rev | Acoustics - Determination of sound power levels and sound energy levels using sound pressure - Engineering/survey methods for use in situ in a reverberant environment | Izstrādē |
| 31641 | prEN ISO 389-2 rev | Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones | Izstrādē |
| 36930 | prEN ISO 389-3 rev | Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators (ISO 389-3:2016) | Izstrādē |
| 9812 | prEN ISO 4869-1 | Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation | Izstrādē |
| 9771 | prEN ISO 4869-5 | Acoustics - Measurement of performance characteristics of hearing protectors in impulsive noise | Izstrādē |
| 30355 | prEN ISO 4871 rev | Acoustics - Declaration and verification of noise emission values of machinery and equipment | Izstrādē |
| 81143 | prEN ISO 7235 rev | Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss | Izstrādē |
| 65264 | prEN ISO 7574-1 | Acoustics - Statistical methods for determining and verifying stated noise emission values of machinery and equipment - Part 1: General considerations and definitions | Izstrādē |
| 65265 | prEN ISO 7574-2 | Acoustics - Statistical methods for determining and verifying stated noise emission values of machinery and equipment - Part 2: Methods for stated values for individual machines | Izstrādē |
Displaying 411-420 of 426 results.