发明名称 Method and apparatus for reproducing a musical presentation
摘要 There is disclosed a method and apparatus for reproducing a musical presentation wherein musical data, from such presentation, such as keyboard actuations of a keyboard-type musical instrument, is encoded and stored in a code which has information contained in the transitions only and the sense and direction of such transitions are ignored. This avoids several major drawbacks of bi-phase level code previously disclosed in the prior art because the (1) phase of the signal need not be maintained and, (2) the bi-phase level code cannot be recovered following a dropout until a 1-0 or a 0-1 transition occurs.
申请公布号 US4132142(A) 申请公布日期 1979.01.02
申请号 US19760681093 申请日期 1976.04.28
申请人 TELEDYNE INDUSTRIES, INC. 发明人 CAMPBELL, JOSEPH M.
分类号 G10G3/04;G10H1/00;(IPC1-7):G10F1/00 主分类号 G10G3/04
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