JJF 1798-2020 Calibration Specification for Sound Insulation Measuring Rooms

JJG 4-2015 Steel Measuring Tapes JJG 449-2014 Octave-Band and Fractional-Octave-Band Filters JJF 1001-2011 General Terms in Metrology and Their Definitions JJF 1143-2006 Calibration Specification for Acoustic Performance of Reverberation Rooms JJF 1468-2014 Calibration Specification for Omnidirectional Sound Sources GB/T 3102.5-1993 Quantities and units—Electricity and magnetism GB/T 3102.7-1993 Quantities and units—Acoustics GB/T 6881.1-2002 Acoustics—Determination of sound power levels of noise sources using sound pressure—Precision methods for reverberation rooms GB/T 19889.1-2005 Acoustics—Measurement of sound insulation in buildings and of building elements—Part 1:Requirements for laboratory test facilities with suppressed flanking transmission GB/T 19889.3-2005 Acoustics—Measurement of sound insulation in buildings and of building elements—Part 3:Laboratory measurements of airborne sound insulation of building elements JJG 176-2005 Sound Calibrators JJG 176-2022 Sound Calibrators JJG 607-2003 Audio-frequency Signal Generator JJG 1019-2007 Working Standard Microphones(Coupler Comparison Method) JJF 1034-2020 Terms and Definitions for Acoustical Metrology GB/T 50121-2005 Rating standard of sound insulation in buildings