I am acquiring unknown sound data for research purposes. I want to make a random check if my microphone is measuring correctly. I have a sound meter that measures SPL in dB. I am not sure how to convert the data I got from the microphone to a sound pressure level (SPL) in dB. The question here is not about the formula to compute SPL (dB) in Pa. My main question is about the relationship between the data acquired and a sound in Pascal (Pa).
Considering the data is in mV, I tried to multiply and divide it at a time by the microphone's sensitivity (in mV/Pa) to compute the SPL (dB in Pa) but the value I am getting does not seem right. I took 0.00002 Pa as a reference.
My data acquisition system comprises the following
Model: 130A23 | ICP® Electret Array Microphone and
NI9234: 4-Channel, 51.2 kS/s/channel, ±5 V, C Series Sound and Vibration Input Module
Looking forward to your help on how to resolve this issue.