| 摘要 |
PURPOSE:To execute a digital control against any of a repeat mode, an octave repeat mode and a musical interval repeat mode by constituting a principal part of a musical interval repeat generator of a keyboard, a repeat signal generating means, a scanning means and a repeat pulse generating means. CONSTITUTION:Pulse patterns on output lines to OR gates 28a - 28l are allowed to correspond to 12 pieces of output lines 31a - 31l and varied by a repeat logic circuit 200 before they are coupled to a group. Subsequently, the patterns of the circuit 200 which is brought to pulse change are coupled to the output lines 31a - 31l by AND gates 206a - 206l, and outputs of an AND gate 204 and 206 are coupled to logic OR circuits 208a - 208l. Next, at the time of controlling a musical interval repeat speed, it can be executed by switching synchronously the AND gate 204 and 206 in accordance with an output of a repeat clock generator 210, and operating alternately these groups by using a repeat frequency of a repeat clock. |
