- Standard No.
- GB/T 20441.3-2010
- Language
- Chinese, Available in English version
- Release Date
- 2010
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB/T 20441.3-2010
- Replace
-
GB/T 6511-1986
- Scope
- This part of GB/T 20441 specifies the primary method for the determination of free-field sensitivity, which has established the basis for reproducible and accurate sound pressure measurements under free-field conditions. This section applies to laboratory standard microphones that meet the requirements of GB/T 20441.1. The principles of the calibration method are applicable to other types of microphones. In particular, when the specified adapter is installed, the microphone that meets the requirements of GB/T 20441.1 can remove the adapter and calibrate according to this part. This section applies to highly experienced technical personnel and laboratories with special requirements.
GB/T 20441.3-2010 Referenced Document
- 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 20441.1-2010 Electroacoustics.Measurement microphones.Part 1:Specifications for laboratory standard microphones
- IEC 60027-2:1972 Letter symbols to be used in electrical technology. Part 2 : Telecommunications and electronics
- IEC 61094-2:1992 Measurement microphones; part 2: primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
- SJ/T 10444-1993 Eloctroacoustics terminology
GB/T 20441.3-2010 history
- 2010 GB/T 20441.3-2010 Electroacoustics.Measurement microphone.Part 3:Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
- 1986 GB/T 6511-1986 Precision method for free-field calibration of &U23.77mm standard condenser microphones by the reciprocity technique
GB/T 20441.3-2010 Electroacoustics.Measurement microphone.Part 3:Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique has been changed from GB/T 6511-1986 Precision method for free-field calibration of &U23.77mm standard condenser microphones by the reciprocity technique.