Noise Meter Sensitivity Calibration and Influencing Factors
Noise Meter - Sensitivity Calibration
In order to ensure the accuracy of the measurement, it should be calibrated before and after use.
Match the sound level calibrator to the microphone, turn on the calibration power supply, 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:
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 non-steady-state noise measurement. Unsteady noise can be divided into periodic variation noise, irregular variation noise and impulse 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. From the accuracy of measurement requirements, it can be divided into precision measurement, engineering measurement and noise census.
