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GB/T 20441.2-2018 Electroacoustics—Measurement microphones—Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique - 英文版 |
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GB/T 20441.6-2017 Electroacoustics—Measurement microphones—Part 6: Electrostatic actuators for determination of frequency response - 英文版 |
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GB/T 20441.5-2017 Electroacoustics—Measurement microphones—Part 5: Methods for pressure calibration of working standard microphones by comparison - 英文版 |
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