SOUND RECORDING AND REPRODUCING DEVICE

摘要

PURPOSE:To increase the number of tracks of sound record and reproduction which are carried out at a time by transferring continuously plural tracks within the same cylinder of a magnetic disk. CONSTITUTION:The sound signals are coded with discrete values by coding means 11-11' and then stored temporarily in temporary storing means 12-12'. These coded sound signals are decoded into sound signals by decoding means 13-13'. Magnetic disks 43 are stacked on each other into a cylindrical form to form plural memory surfaces. These memory surfaces perform the sound record and reproduction by transferring the coded sound signals between means 12-12' and a magnetic disk means 30 which can write and read with plural tracks with same revolution and by cylindrical tracks 44 and 45. Thus the number of tracks which can perform record and reproduction of sound at a time is increased to double or more compared with the conventional number of tracks.