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The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal. It consists of two metal plates separated by granules of carbon. One plate is very thin and faces toward the speaking person, acting as a diaphragm.
The carbon microphone was critical in the development of telephony, broadcasting and the recording industries. [13] Thomas Edison refined the carbon microphone into his carbon-button transmitter of 1886. [10] [14] This microphone was employed at the first radio broadcast ever, a performance at the New York Metropolitan Opera House in 1910. [15]
David Edward Hughes (16 May 1830 – 22 January 1900), was a British-American inventor, practical experimenter, and professor of music known for his work on the printing telegraph and the microphone. [3] He is generally considered to have been born in London but his family moved around that time so he may have been born in Corwen, Wales.
Francis Blake was born in Needham, Massachusetts on December 25, 1850, the son of Caroline Burling (Trumbull) and Francis Blake, Sr. [1]. In 1879, he invented a carbon microphone for use in the telephone, and patented [2] [3] [4] it shortly after Thomas Edison invented a similar microphone that also used carbon contacts.
In 1877 and 1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After protracted patent litigation, a federal court ruled in 1892 that Edison and not Emile Berliner was the inventor of the carbon microphone. The carbon microphone was also used in radio broadcasting and ...
Shure 55S. The Shure 55SH is a professional cardioid dynamic microphone that has been commonly used in broadcast applications since 1939. Designed by American audio products company Shure, it has been described as "iconic" in pamphlets and reviews, [1] after the Elvis stamp issued by the U.S. Postal Service in 1993. [2]
A ribbon microphone, also known as a ribbon velocity microphone, is a type of microphone that uses a thin aluminum, duraluminum or nanofilm of electrically conductive ribbon placed between the poles of a magnet to produce a voltage by electromagnetic induction. Ribbon microphones are typically bidirectional, meaning that they pick up sounds ...
Candlestick telephone. A Western Electric desk stand telephone of the 1920s and 30s. The candlestick telephone (or pole telephone) is a style of telephone that was common from the late 1890s to the 1940s. A candlestick telephone is also often referred to as a desk stand, an upright, or a stick phone. Candlestick telephones featured a mouthpiece ...