Acoustic Calibrator(소음교정기)  영국 Cirrus Research 社

모 델 명

Source(dB)

Calibration Frequency

Remark

  Acoustic Calibrator CR:510 series

  CR:514

94

at 1kHz, IEC 60942:2003

Class 2(정밀)

  CR:515

94

at 1kHz, IEC 60942:2003

Class 1

 Pistonphone

  AS-NC-72

104 & 94

at 1kHz, IEC:942

보통급,1/2"전용