Office Recorder Puts Three Hours of Talk on Ten-Inch Disk (Jun, 1942)
Office Recorder Puts Three Hours of Talk on Ten-Inch Disk
A new office recorder makes it possible to record three hours of conversation, dictation, and the like on a single ten-inch plastic disk. Paper-thin, the disk is curved on a special turntable while the machine is in use. Sound, picked up by a microphone or by connection to a telephone line or radio, is amplified to provide power for molding an actual image of the sound wave on the record material. Recording is done on both sides, each side good for 1-1/2 hours. Disks can be stored in an ordinary filing case.