The history of electroacoustic technology dates back to the 19th century. Edison invented the phonograph and Bell invented the carbon microphone for telephones. In 1881, two pairs of headphones were connected by two carbon microphones, making a two-channel stereo. Pass the show. In 1919, for the first time, sound reinforcement experiments were performed using tube amplifiers and electromagnetic speakers.
After the First World War, scientists applied electromechanical research results to the field of electroacoustics, so electroacoustics has a theoretical basis. With the development of electroacoustic transducer theory, more complete types of electroacoustic equipment and electroacoustic measuring instruments have been introduced, especially in the 1970s, the application of electronic computers and laser technology in the field of electroacoustics has greatly promoted. The development of electroacoustics.
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