pwkits.org

The Microphone is defined as an electric transducer or sensor that converts sound into an electrical signal. Microphones are used in many applications. They are used in various instruments like telephones, tape recorders, hearing aids, motion picture production, live and recorded audio engineering, in radio and television broadcasting and in computers for recording voice, and also for non acoustic purposes such as ultrasonic checking. Loudspeakers can also function as microphones when in reverse use.

The basic function of a wired microphone is to capture waves from various surfaces and convert them into an electrical signal. A common signal flow is activated with the help of thin membranes producing a proportional electrical signal.

Most microphones in use today for audio, use electromagnetic generation (dynamic microphones), capacitance change (condenser microphones) or piezoelectric generation to produce the signal from mechanical vibrations.

In the world of wired microphones, there exists a large variety, with varied functions. The types of microphones are condensers or commonly also known as capacitor, dynamic, carbon and piezoelectric microphones. Read the rest of this entry »