Acoustics Standards

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Calibrated Device Condenser Microphone
Range (1) Frequency: 250 Hz (124 dB) or 1 kHz (94 dB or 114 dB)
(2) Frequency: 31.5 Hz to 1 kHz (94 dB or 104 dB or 114 dB) 
Uncertainty (1) 0.3 dB
(2) 0.3 dB to 0.5 dB 
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