With a microphone sensitivity of -33dB = 22.4mV/Pa, picking up a conversation (about 60dB SPL), What is the voltage output of the microphone? My concern here is power vs voltage decibel calculations.
60dB SPL is 34dB below 1 Pa. (Treating SPL as power), this is equivalent to 1/(10^3.4) Pa, or 398 microPa, correct?
So then, if I multiply 398 e-6 x .0224 My microphone should produce 8.9 microvolts? Almost -99dBu (-99dBm)?
Which means I would need at least 80dB in front end voltage gain to record this properly?