What is the output-power sensitivity of a microphone if the voltage sensitivity is -62 dBV and the impedance is 300 ohms?

To calculate the output-power sensitivity of a microphone given its voltage sensitivity and impedance, we can use the formula:

[ \text{Power Sensitivity (dBm)} = \text{Voltage Sensitivity (dBV)} + 10 \log_{10}\left(\frac{1}{\text{Impedance (Ohms)}}\right) + 30 ]

Substituting the values, we have:

[ \text{Power Sensitivity (dBm)} = -62 + 10 \log_{10}\left(\frac{1}{300}\right) + 30 ]

Calculating this results in a power sensitivity of approximately -65.2 dBm.