The MI-1281 is a precision microphone that achieves -20 dB re.1V/Pa of sensitivity, 8 dB of self-noise level (A-weighting, when using MI-3170) although it is 1/2-inch back electrets type. It has a low noise floor that enables measurement of very low noise.
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Specifications
| Frequency Range | 10 Hz to 20 kHz (+1.5 dB, -5 dB) | 10 Hz to 10 kHz (+1.5 dB, -2 dB) |
| Responce Type | Free Field Type |
| Electrode Forming Voltage | 0 V |
| Sensitivity | -20 dB±1.5 dB re. 1 V/Pa | 100 mV/Pa (1 kHz) |
| Capacitance | 14 pF (Representative Value) |
| Maximum Sound Pressure Level | 128 dB (When using MI-3170) |
| Intrinsic Noise Level | 8.0 dB (Representative Value)(When using MI-3170) |
| Operating Temperature Range | -10 to +50 ℃ |
| Operating Humidity Range | 0 to 90 % (With no condensation) |
| Storage Temperature Range | -20 to +60 ℃ |
| Storage Humidity Range | 0 to 90 % (With no condensation) |
| Outer Dimensions | φ13.2 mm × 16.9 mm |
| Mass | Approximately 6 g |
Notes
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