Microphones simply convert the sound pressure deviationsp(pascal Pa) to audio voltageV(volts V). Forget necessarily the energy as output power of the microphone! Reference: 94 dBSPL ≡ 1 pascal= 10 µbars = 10 dynes/cm2 Auditory threshold: 0 dBSPL ≡ 0.00002 Pa = 0.0002 dyne/cm2 ...