effective sound pressure การใช้
- Effective sound pressure
- Acoustics - hearing protectors - measurement of effective sound pressure levels for level - dependent sound - restoration ear muffs
- Acoustics - hearing protectors - part 4 : measurement of effective sound pressure levels for level - dependent sound - restoration ear - muffs
- Acoustics - hearing protectors - part 4 : measurement of effective sound pressure levels for level - dependent sound - restoration ear - muffs iso tr 4869 - 4 : 1998 ; german version en iso 4869 - 4 : 2000
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