JJG 1184-2022 Detection Systems for Vehicle Honking

JJG 176-2005 Sound Calibrators JJG 188-2017 Sound Level Meters 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 JJF 1496-2014 Calibration Specification for Sound Source Identification and Localization Systems(Beamforming Method) GB/T 3222.1-2006 Acoustics—Description, measurement and assessment of environmental noise—Part 1:Basic quantities and assessment procedures GB/T 3947-1996 Acoustical terminology GB 7258-2017 Technical specifications for safety of power-driven vehicles operating on roads GB 15742-2019 Performance requirements and test methods of horn for motor vehicles GB/T 17247.1-2000 Acoustics—Attenuation of sound during propagation outdoors—Part 1:Calculation of the absorption of sound by the atmosphere GB/T 17247.2-1998 Acoustics—Attenuation of sound during propagation outdoors—Part 2:General method of calculation GB/T 20441.4-2006 Measurement microphones—Part 4:Specifications for working standard microphones JJG 175-1998 Measuring Condenser Microphones JJG 175-2015 Working Standard Microphones(Electrostatic Actuator Method) GB/T 3102.7-1993 Quantities and units—Acoustics