Making your voice heard with microphones is essential in certain settings.
The first microphones were invented in the course of developing the telephone, a fact that’s overlooked by many people but obvious when you think about it. Since then, microphones have come to be used in all manner of technology, from making records to performing live music, from dictaphones to personal computers.
Many devices such as tape recorders, video cameras and even some computers have built-in microphones. Other devices require external microphones, and even things with built-in mics often produce better-quality sound if an external mic is used.
There are five basic types of microphones, each using a different technology.
The first kind of microphone used carbon dust and little diaphragms to convert sound waves into electrical signals. Dynamic microphones use magnets to produce the same effect. Ribbon microphones use thin ribbons suspended in magnetic fields. Condenser microphones function as capacitors, often requiring a battery to create voltage. Finally, crystal microphones make use of the unique electrical properties of some crystals.
When it comes to...
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