GB/T 9068-2025 Determination of sound power levels of refrigeration and air-conditioning equipment—Sound pressure methods

GB/T 9068-1988

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 3785.1-2023 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 4129-2003 Acoustics—Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels GB/T 6881-2023 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for reverberation test rooms GB/T 6881.2-2017 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for small movable sources in reverberant fields—Comparison method for a hard-walled test room GB/T 6882-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for anechoic rooms and hemi-anechoic rooms GB/T 15173-2010 Electroacoustics—Sound calibrators JB/T 7249-1994 Refrigeration equipment terminology JB/T 7249-2022 Refrigeration and air conditioning equipment terminology