Noise Meter - Sensitivity Calibration and Influencing Factors
Noise Meter - Sensitivity Calibration
In order to ensure the accuracy of measurement, calibration should be carried out before and after use.
Fit the sound level calibrator on the microphone, turn on the calibration power, read the value, adjust the sensitivity potentiometer of the noise meter, and complete the calibration.
Noise Meter - Influencing Factors
The noise meter is mainly used to measure noise, and the classification of noise measurement mainly includes the following types:
1. From the measurement object, it can be divided into the characteristic measurement of environmental noise (sound field) and the measurement of sound source characteristics.
2. From the time characteristics of the sound source or sound field, it can be divided into steady-state noise measurement and unsteady-state noise measurement. Non-stationary noise can be divided into periodic noise, irregular noise and pulse sound.
3. From the frequency characteristics of the sound source or sound field, it can be divided into broadband noise, narrowband noise and noise containing prominent pure tone components.
4. In terms of the accuracy required by the measurement, it can be divided into precision measurement, engineering measurement and noise survey, etc.
