GB/T 10894-2004 Determination method of noise emitted by separating machine

GB 10894-1989

GB/T 10894-2023 Determination method of separation machinery noise

GB/T 3768-1996 Acoustics—Determination of sound power levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane GB/T 3102.7-1993 Quantities and units—Acoustics GB/T 3241-1998 Octave-band and fractional-octave-band filters GB/T 3241-2010 Electroacoustics—Octave-band and fractional-octave-band filters GB/T 3767-1996 Acoustics—Determination of sound power levels of noise sources using sound pressure—Engineering method in an essentially free field over a reflecting plane GB/T 3767-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for an essentially free field over a reflecting plane GB/T 3785-1983 Electric, sonic properties and measuring methods for sound level meters GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 3785.1-2023 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 3785.2-2010 Electroacoustics—Sound level meters—Part 2:Pattern evaluation tests GB/T 3785.2-2023 Electroacoustics—Sound level meters—Part 2:Pattern evaluation tests GB/T 3785.3-2018 Electroacoustics—Sound level meters—Part 3:Periodic tests GB/T 3947-1996 Acoustical terminology JJG 176-2005 Sound Calibrators JJG 176-2022 Sound Calibrators JJG 188-2002 Sound Level Meters JJG 188-2017 Sound Level Meters JJG 277-1998 Reference Sound Source JJG 277-2017 Reference Sound Sources GB/T 3241.2-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 2:Pattern evaluation tests GB/T 3241.1-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 1:Specifications

ISO 3744:1994