GB/T 20441.3-2010
Electroacoustics.Measurement microphone.Part 3:Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique

Standard No.

GB/T 20441.3-2010

Language

Chinese

Release Date

2010

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Lastest

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.

GB/T 20441.3-2010 -All Parts