GB/T 12058-1989 Listening tests on loudspeakers

GB/T 12060.13-2011 Sound system equipment—Part 13:Listening tests on loudspeakers

GB 9375 GB/T 4854.1-1999 Acoustics—Reference zero for the calibration of audiometric equipment—Part 1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones GB/T 4854.1-2004 Acoustics—Reference zero for the calibration of audiometric equipment—Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones GB/T 4854.3-1998 Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold force levels for pure tones and bone vibrators GB/T 4854.3-2022 Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold vibratory force levels for pure tones and bone vibrators GB/T 4854.4-1999 Acoustics—Reference zero for the calibration of audiometric equipment—Part 4:Reference levels for narrow-band masking noise GB/T 4854.5-2008 Acoustics—Reference zero for the calibration of audiometric equipment—Part 5:Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz GB/T 4854.6-2014 Acoustics—Reference zero for the calibration of audiometric equipment—Part 6:Reference hearing threshold levels for test signals of short duration GB/T 4854.7-1999 Acoustics—Reference zero for the calibration of audiometric equipment—Part 7:Reference threshold of hearing under free-field and diffuse-field listening conditions GB/T 4854.7-2008 Acoustics—Reference zero for the calibration of audiometric equipment—Part 7:Reference threshold of hearing under free-field and diffuse-field listening conditions GB/T 4854.8-2007 Acoustics—Reference zero for the calibration of audiometric equipment—Part 8:Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones GB/T 4854.9-2016 Acoustics—Reference zero for the calibration of audiometric equipment—Part 9:Preferred test conditions for the determination of reference hearing threshold levels GB/T 6278-1986 Simulated programme signal GB/T 6278-2012 Sound system equipment—General—Simulated programme signal 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

IEC 268-13-85