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

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

GB/T 3241-2010 Electroacoustics—Octave-band and fractional-octave-band filters 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 3785.1-2010 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 15173-2010 Electroacoustics—Sound calibrators GB/T 3102.7-1993 Quantities and units—Acoustics 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 3768-2017 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane GB/T 3947-1996 Acoustical terminology GB/T 4774-2004 Terminology of separating machine GB/T 4774-2013 Terminology of filtration and separation GB/T 17248.2-1999 Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Engineering method in an essentially free field over a reflecting plane GB/T 17248.2-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections GB/T 19052-2003 Acoustics—Noise emitted by machinery and equipment—Rules for the drafting and presentation of a noise test code 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