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The Meanings of Microphone
A microphone by definintion has two meanings: it is an instrument for intensifying weak sounds and it is a device for transforming sound waves into electrical pulses. -
Development
In the mid-1920 the development of the condeser microphone and the electronic vacuum tube amplifier paved the way for sound on film recording, the first high quality, wide range condeser microphone was developed by E.E. Wente at Bell Labs as a measurement standard in the late 1910s. -
Western Electric 618-A
The omni directional dynamic microphone was developed by Wente and Thuras in the late 1920s, and introduced as the Western Electric 618-A