- 【A01】Calibration system of laboratory standard microphones by reciprocity technique
- 【A01】標準麥克風互換校正系統
- 【A02】Calibration system of standard microphones by comparison
- 【A02】標準麥克風比較校正系統
- 【A03】Calibration system of sound calibrators
- 【A03】聲音校正器校正系統
- 【A04】Microphone Free-Field Sensitivity Calibration System
- 【A04】麥克風自由場靈敏度校正系統