| 摘要 |
A truncation system is provided for an electronic musical instrument in which key codes are stored in channels of a key code memory and are repetitively provided to a time shared tone generator in time shared fashion during respective channel related time slots of consecutive cycle periods. The truncation system detects, when a key code has been assigned to all of the channels in the key code memory and a new key is depressed, a channel in which attenuation of the tone of a released key has advanced to the furthest degree and thereon produces a truncate channel designation signal designating that channel. The channel designation signal is applied to a set and reset signals generator circuit in order that the stored key code in a specific channel is reset and the new key code associated with the newly depressed key is stored in the channel.
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