Constructed of black celluloid on a cardboard core with metal bands at each endMechanical analog vertical grooves, vertical stylus motion - made from black celluloid with cardboard and inner metal bands Indestructible Record cylinder, vertical groove. The vertical-groove pathé discMechanical analog vertical grooves, vertical stylus motion Mechanical analog lateral grooves, horizontal stylus motionĪ phonograph post card, playable on 78rpm turntablesMechanical analog lateral grooves, horizontal stylus motionĪ modern vinyl LP with a centre-start cutMechanical analog lateral grooves, horizontal stylus motion, starts from the centre of the disc The vertical-groove pathé cylinderMechanical analog vertical grooves, vertical stylus motionħ8rpm record - playable on modern turntablesMechanical analog lateral grooves, horizontal stylus motion - made from hard rubberĪ Peirce 55-B dictation wire recorder from 1945Analog magnetization DC biasħ8rpm record - playable on modern turntablesMechanical analog lateral grooves, horizontal stylus motion - made from shellacĮdison's "gold moulded" black wax cylinder recordMechanical analog vertical grooves, horizontal stylus motion - made from hard black wax - 160rpm standard - 100 threads per inch Mechanical digital (Vacuum operated organ)Ī Dictaphone cylinder for voice recordingAnalog, the Ediphone and subsequent wax cylinders used in Edison's other product lines continued to be sold up until 1929 when the Edison Manufacturing Company folded. In 1877, Thomas Edison invented the first recorder that could also play backAnalog sound waveform transcribed to tinfoilĪ piano roll used in a player pianoDigital (Vacuum operated piano)Ĩ'' disc for playback on a music boxDigital (Vacuum operated music box)Ī collection of brown wax cylinders, vertical-grooveanalog vertical grooves, vertical stylus motion - could be re-recorded Timeline of audio format developments Yearĭigital, automated sound reproducing machine.ĭigital, automatically played by means of revolving cylinders. Music is recorded and distributed using a variety of audio formats, some of which store additional information. The term is applied to both the physical recording media and the recording formats of the audio content-in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to store the data. An audio format is a medium for sound recording and reproduction.
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