Taking thread: Sound-Waves on a Cord 1922
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Taking thread: Sound-Waves on a Cord 1922
Mr. W F Croll, who holds the parent, of a method of recording and reproducing sound-waves by means of a cellulose thread instead of by the generally known disc or cylinder record, saving space and weight. Date: 1922
Media ID 14113708
© Illustrated London News Ltd/Mary Evans
Apparatus Cord Diagram Diagrams Invention Inventions Machines Record Recorded Recording Sound Talking Thread Wave Waves
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