Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 21232-2007 Acoustics - Guidelines for noise control in offices and workrooms by means of acoustical screens 260.0 via email in 1~3 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 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 17696-1999 Acoustics--Audiometric test methods--Part 3:Speech audiometry 225.0 via email in 1~3 business day valid
GB/T 6881.3-2002 Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering methods for small,movable sources in reverberant field--Part 2:Methods for special re 260.0 via email in 1~3 business day valid
GB/T 20243.1-2006 Acoustics—Measurement of the influence of road surface on traffic onise Part 1:Statistical Pass-By method 210.0 via email in 1~3 business day valid
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 7965-2002 Acoustics - Measurement of underwater sound transducers 375.0 via email in 1~3 business day valid
JJG 994-2004 Verification Regulation of Digital Audio Generators 225.0 via email in 1~3 business day valid
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
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 7341.4-1998 - Part 4: Equipment for extended high-frequency audiometry 110.0 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 7341.3-1998 - Part 3: Auditory test signals of short duration for audiometric and neuro-otological purposes 110.0 via email in 1~3 business day valid
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 240.0 via email in 1 business day superseded
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 1988 4-2005 GB/T 1988 4-2005 Acoustics - 150.0 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 4130-2000 Acoustics--Low frequency calibration methods of hydrophones 225.0 via email in 1~3 business day valid
GB/T 15485-1995 Acoustics-Methods for the calculation of the articulation index of speech 240.0 via email in 1~3 business day valid
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