GB/T 4129-1995 Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source

Standard No.: GB/T 4129-1995
Language: Chinese
Release Date: 1995
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Replace By: GB/T 4129-2003
Lastest: GB/T 4129-2003

Scope: This standard specifies the basic acoustic performance requirements of the standard sound source and the calibration method of the sound power level expressed in 1/1 octave band, 1/3 octave band and A weighting. Several types of standard sound sources are described in Appendix A of this standard. This standard applies to calibrations in semi-anechoic chambers, ie free-field acoustic environments on a reflective surface, and specifies the level of detail of the uncertainty to be achieved. This standard applies to various types of standard sound sources.

2003 GB/T 4129-2003 Acoustics-Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
1995 GB/T 4129-1995 Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source

GB/T 4129-1995Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source