JJG 1172-2019 Active National Metrology and Inspection Regulations JJG

JJG 1172-2019 Working Standard Microphones(Free-field Comparison Method)

Publish Date: 2019-12-31 Implement Date: 2020-03-31 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: JJG 1172-2019

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2019-12-31

Implement Date: 2020-03-31

Pages: 19 pages

Scope

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of work standard microphones that meet the requirements of GB/T 20441.4-2006, "Measurement Microphones - Part 4: Specifications for Work Standard Microphones".

Development Information

Word Count: 28 Thousand words Pages: 19 pages

Referenced Standards

JJG 175-2015 Working Standard Microphones(Electrostatic Actuator Method) JJG 1019-2007 Working Standard Microphones(Coupler Comparison Method) GB/T 15173-2010 Electroacoustics—Sound calibrators GB/T 20441.3-2010 Electroacoustics—Measurement microphone—Part 3:Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique GB/T 20441.4-2006 Measurement microphones—Part 4:Specifications for working standard microphones IEC 61094-2 IEC 61094-3 IEC 61094-8:2012 JJF 1001-1998 General Terms in Metrology and Their Definitions JJF 1001-2011 General Terms in Metrology and Their Definitions JJF 1034-2020 Terms and Definitions for Acoustical Metrology JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement JJF 1147-2006 Calibration Specification for Acoustic Performance of Anechoic Rooms and Hemi-anechoic Rooms GB/T 3102.7-1993 Quantities and units—Acoustics GB/T 3947-1996 Acoustical terminology

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