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The Stethoscope is used to record sound
In 1827, Sir Charles Wheatstone uses a certain type of stethoscope to amplify sounds and names it the microphone. (exact date unknown) http://lloydmicrophoneclassics.com/mic_history.html -
The carbon microphone
David Edward Hughs discovers the carbon microphone from a loose circut in a telephone reciever.
(exact date unkown)
http://blog.techniline.org/fascinating-history-modern-microphone/ -
Crystal Microphones
They improved on the faults of carbon microphones being sensitive but were hard to produce so they never became a staple. Manufacturers didnt know how to created uniform crystals because the design depended on the structure of the crystals.
(exact date unknown)
http://lossenderosstudio.com/article.php?subject=14 -
The first condenser microphone is invented
The first condenser microphone was created by E. E. Went who worked for Bell Labs.It was called the 394 condenser. It improved on the older carbon microphones by getting rid of the signal-to-noise problem that the older generation suffered from. http://lloydmicrophoneclassics.com/mic_history.html -
Shure Unidyne Model 55
The Unidyne model 55 was the first microphone to use the delay from when sound enters the front of the mic and when sound enters the back of it to effectively cancel out the sound in the back. He called this the uniphase system.
(exact date unkown)
http://www.coutant.org/12mics/ -
The Ribbon Microphone
The Ribbon microphone is invented for radio broadcast in 1942. -
Neumann U 47/67
This was the first microphone that could alternate between a cardiod, a heart shaped listening pattern, or an omni-directional, a full circle listening pattern.
(exact date unknown)
http://www.coutant.org/12mics/ -
The Electret microphone
James West and Gerhard Sessler received the the patent to the Electret microphone in 1964. The Electret microphone gave a clearer recording and lower cost. It was so successful that it almost reached one billion produced every year. (Exact date unknown) http://inventors.about.com/od/mstartinventions/a/microphone.htm -
The condenser microphone
The condenser microphone uses electricity from a capacitor to amplify the sound. This provides a cleaner sound overall and is what is mostly used today.
(exact date unknown)
http://blog.techniline.org/fascinating-history-modern-microphone/
