Lecture

Capacitive Microphones

In course

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Description

This lecture covers the construction and operation of capacitive microphones, focusing on the variation of capacitance as the relevant quantity for measurement. It explains the construction of a capacitive microphone, the concept of electret microphones, and the presence of electrets allowing quasi-permanent polarization. The lecture also discusses the special circuit for electret microphones, including the need for a power supply to recharge them, and the advantages and disadvantages of using electret microphones.

Instructors (2)

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Official source

https://mediaspace.epfl.ch/media/0_lvig8cgy

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Ontological neighbourhood

Physics

Electromagnetism: Electrical networks

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