Noise meter - Calibrating the sensitivity and the factors influencing it
Noise Meter - Sensitivity Calibration
To ensure the accuracy of the measurement, calibration should be carried out before and after use.
Fit the sound level calibrator to the microphone, switch on the calibration power supply, read the value and adjust the noise meter sensitivity potentiometer to complete the calibration.
Noise Meter-Influencing Factors
Noise meter is mainly used to measure noise, and the classification of noise measurement is mainly as follows:
1, from the measurement object, can be divided into environmental noise (sound field) characteristics of the measurement and the measurement of the characteristics of the sound source.
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. Non-stationary noise can be divided into periodic change noise, irregular change 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 precision of measurement requirements, it can be divided into precision measurement, engineering measurement and noise census.
