Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 4130-2000 Acoustics--Low frequency calibration methods of hydrophones 225.0 via email in 1~3 business day abolished
GB/T 7341.4-1998 - Part 4: Equipment for extended high-frequency audiometry 110.0 via email in 1~3 business day valid
GB/T 18696.2-2002 Acoustics - Determinatio of sound absorption coefficient and impedance in impedance tubes - Part 2: Transfer function method 300.0 via email in 1~3 business day valid
GB/T 18699.1-2002 Acoustics - Determination of sound insulation performances of enclosures Part 1: Measurements under laboratory conditions(for declaration purposes) 180.0 via email in 1~3 business day valid
GB/T 19885-2005 Acoustics—Determination of sound insulation performance of cabins—Laboratory and in-situ measurements 170.0 via email in 1~3 business day valid
GB/T 7341.2-1998 - Part 2: Equipment for speech audiometry 170.0 via email in 1~3 business day valid
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 195.0 via email in 1~3 business day abolished
GB/T 20431-2006 Acoustics―Guidelines for noise control by silencers 90.0 via email in 1~3 business day valid
GB/T 1988 7-2005 GB/T 1988 7-2005 Acoustics - Measurement of the in situ sound attenuation of a removable screen 165.0 via email in 1~3 business day valid
GB/T 34828-2017 Acoustics-Test methods for the qualification of free-field environments 315.0 via email in 1~5 business day valid
GB/Z 27764-2011 Acoustics - Determination of sound transmission loss in impedance tubes - Transfer matrix method 450.0 via email in 1~3 business day valid
GB/T 15611-1995 Acoustics - Calibration of high frequency hydrophone 135.0 via email in 1~3 business day valid
GB/T 16407-2006 Acoustics - Characteristics and measurements of field of Pressurepulse lithotripters 260.0 via email in 1~3 business day valid
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method using an enveloping measurement surface over a reflecting plane 360.0 via email in 1~5 business day superseded
GB/T 19886-2005 Acoustics—Guidelines for noise control by enclosures and cabins 550.0 via email in 1~3 business day valid
GB/T 18696.1-2004 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Part 1:Method using standing wave ratio 210.0 via email in 1~3 business day valid
GB/T 6881.1-2002 Acoustics--Determination of sound power levels of noise sources using sound pressure--Precision methods for reverberation rooms 345.0 via email in 1~3 business day valid
GB/T 7341.1-1998 Audiometers. Part 1: Pure-tone audiometers 690.0 via email in 1~3 business day superseded
JJG 991-2004 Verification Regulation of Aural Impedance Audiometers 300.0 via email in 1~3 business day abolished
GB/T 18022-2000 Acoustics - Methods for measuring the longitudinal sound speed and attenuation coefficient of rubbers and plastics in the frequency range 1 MHz to 10 MHz 150.0 via email in 1~3 business day valid
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