| 摘要 |
PURPOSE:To always attain the hearing of information and to preserve the information for a long period of time by producing a master magnetic tape containing the news and information collected and edited and then copying this magnetic tape into many tapes to be stored into cassettes. CONSTITUTION:The news and information are collected and edited and then recorded with addition of the music and sound effects to the original announcement. Thus a master magnetic tape is produced. This magnetic tape is copied into many tapes by a high-speed recorder. These copied tapes are stored into cassettes. Thus it is possible to bear the news and information at all times and also to preserve these information for a long period of time.
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