Microphone Impedance

F/A/V
The nominal load impedance for a microphone indicates the optimum matching load which utilizes the mike's characteristics to the fullest extent. Impedance is a combination of dc resistance, inductance and capacitance, which act as resistances in ac circuits. An inductive impedance increases with frequency; a capacitative impedance decreases with frequency. Either type introduces change in phase. (Acoustics)

Audio and video glossary. 2014.

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