I'm attempting to convert a voltage signal originating from a microphone to decibels. However, I do not have the "microphone sensitivity" in terms of dBV/Pa which is used in this previous conversion. Instead, I have the microphone conversion factor as sensitivity.
Given the details below, how would I go about converting this voltage to decibels?
Approximate sensitivity: 250mV/Pa
Pre-amp gain setting: 12 dB
Approximate input-referred self-noise Level (bandwidth: 30-50 kHz): 18 dB SPL