There are many processes to do that but the most common is a dynamic microphone that uses a coil of wire suspended in a magnetic field. The Function of a MicrophoneĪ microphone or mike converts the air pressure variations of a sound wave to an electrical signal. Later Thomas Edison has refined this into a carbon-button transmitter in 1886. Later German inventor Johann Philipp redesigned an early transmitter that used a metallic strip attached to a vibrating membrane that would produce intermittent current but a better result came with "liquid transmitter" designed by Scottish-American Alexander Graham Bell in 1876.ĭavid Edward Hughes invented a carbon microphone in 1870 that is the direct prototype of today's microphones and was critical in the development of telephony, broadcasting, and the recording industries. ![]() In 1665 Robert Hooke was the first to invent the process of stretched wire with a cup attached at each end for transmission. Use High-Quality Microphones for your Studio available at the Best Price in BangladeshĪt the very beginning, acoustic megaphones were used for the amplification of the human voice.
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