| 摘要 |
Means providing stationary images have associated therewith sound related to each of the images. A plural number of non-translatable magnetic heads are used in conjunction with a control circuit so as to extend the recording time by enabling the recording or reproducing of independent sound tracks, one sound track per head, and switching such heads in sequence at end of each record or reproduce period. The control circuit may be electronic or electromechanical.
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