Acoustic Calibrator(소음교정기) 영국 Cirrus Research 社 |
모 델 명 |
Source(dB) |
Calibration Frequency |
Remark |
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94 |
at 1kHz, IEC 60942:2003 |
Class 2(정밀) |
|
94 |
at 1kHz, IEC 60942:2003 |
Class 1 |
|
Pistonphone | |||
|
104 & 94 |
at 1kHz, IEC:942 |
보통급,1/2"전용 |