China Standards English version of Acoustic Measurement,page 7

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Database: 365,228(8 Aug 2026)

GB/T 31774 GB 14880 photovoltaic PV solar energy IMT-2020

GB/T 20441.6-2017 in English

Electroacoustics-Measurement microphones-Part 6:Electrostatic actuators for determination of frequency response

VALID

Issued on:2017-11-01 | Implemented on:2018-05-01

$370.00 $359.00
GB/T 25498.5-2017 in English

Electroacoustics--Simulators of human head and ear--Part 5: 2 cm3 coupler for the measurement of hearingaids and earphones coupled to the ear by means of ear inserts

VALID

Issued on:2017-09-07 | Implemented on:2018-04-01

$160.00 $156.00
GB/T 20441.5-2017 in English

Electroacoustics--Measurement microphones--Part 5: Methods for pressure calibration of workingstandard microphones by comparison

VALID

Issued on:2017-09-07 | Implemented on:2018-04-01

$250.00 $243.00
GB/T 3767-2016 in English

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

VALID

Issued on:2016-02-24 | Implemented on:2016-09-01

$930.00 $903.00
GB/T 4854.6-2014 in English

Acoustics―Reference zero for the calibration of audiometric equipment―Part 6:Reference hearing threshold levels for test signals of short duration

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$160.00 $156.00
GB/T 31013-2014 in English

Acoustics―Acoustic insulation for pipes,valves and flanges

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$490.00 $476.00
GB/T 31004.3-2014 in English

Acoustics―Measurement of sound insulation in buildings and of building elements using sound intensity―Part 3:Laboratory measurements at low frequencies

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$250.00 $243.00
GB/T 31004.2-2014 in English

Acoustics―Measurement of sound insulation in buildings and of building elements using sound intensity―Part 1:Laboratory measurements

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$220.00 $214.00
GB/T 31004.1-2014 in English

Acoustics―Measurement of sound insulation in buildings and of building elements using sound intensity―Part 1:Laboratory measurements

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$120.00 $117.00
GB/T 21230-2014 in English

Acoustics―Determination of occupational noise exposure―Engineering method

VALID

Issued on:2014-09-03 | Implemented on:2015-02-01

$550.00 $534.00

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