| 摘要 |
PURPOSE:To reduce the deformation of a rectangular magnetic sheet to improve the quality of reproduced sounds, by providing the start point and the end point of a track for a recording and reproducing head near edges on longer sides of the sheet. CONSTITUTION:A magnetic coating 2 is provided on the rear face of a rectangular sheet 1, and an orchestral accompaniment is preliminarily dubbed on a track 3 from a start point 4 to an end point 5 near edges of longer sides of the sheet. The head is pressed to the sheet 1 at the start point 4 and runs along the track 3 to reproduce sounds while raising and deforming the sheet partially, and the head is returned automatically from the end point 5 to the start point 4. The front face of the sheet 1 is a printed face, and a name and words of a song corresponding to the accompaniment on the track 3 are printed there. |
