Podcast: Play in new window | Download (Duration: 20:22 — 18.7MB)

Mic by picpogm via Flickr

A microphone is a type of transducer, which means that they change in energy. In this case it’s from kinetic energy (for more on air displacement and how it relates to sound, check out the “What is Sound” episode) to electric energy. All microphones have a surface that is moved by the air displacement sound creates, and aside from that, they work differently.

We discuss dynamic microphones, condenser microphones and carbon microphones. You might be surprised to know that carbon microphones are the most popular microphones in the world.

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