Measurement and assessment of aircraft noise; aircraft noise monitoring systems within the meaning of article 19a of the Luftverkehrsgesetz (Civil Aviation Law)— 6 стр.
Acoustics - Determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment - Engineering method (ISO 8297:1994)— 9 стр.
Measurement and assessment of aircraft noise; aircraft noise monitoring systems within the meaning of article 19a of the Luftverkehrsgesetz (Civil Aviation Law)— 6 стр.