ITU-T G.230
Measuring methods for noise produced by modulating equipment and through-connection filters
现行
发布日期 :
2025-11-01
实施日期 :
DIN 45635-16
Measurement of Airborne Noise Emitted by Machines; Enveloping Surface Method, Machine Tools
现行
发布日期 :
2001-06-01
实施日期 :
ITU-R F.555
Permissible noise in the hypothetical reference circuit of radio-relay systems for television
现行
发布日期 :
2028-05-01
实施日期 :
DIN EN ISO 3381
Railway applications - Acoustics - Measurement of noise inside railbound vehicles (ISO 3381:2005)
现行
发布日期 :
2001-05-01
实施日期 :
ITU-T G.441
Permissible circuit noise on frequency-division multiplex radio-relay systems
现行
发布日期 :
2025-11-01
实施日期 :
ITU-T O.131
Quantizing distortion measuring equipment using a pseudo-random noise test signal
现行
发布日期 :
2025-11-01
实施日期 :
DIN ISO 2923
Acoustics - Measurement of noise on board vessels (ISO 2923:1996 + Technical Corrigendum 1:1997)
现行
发布日期 :
2001-03-01
实施日期 :