Synthetic recording device in an automatic performance piano

Claim 1

A synthetic recording device in an automatic performance piano conducting an automatic performance in response to playback performance information read from memory means and, simultaneously, detecting keys operated by a performer from among keys provided in a keyboard and generating record performance information in accordance with a result of detection, and storing performance information obtained by synthesizing the record performance information and the playback performance information in the memory means, comprising: key range setting means for setting, as a record area, a range of keys in which the record performance information is to be generated; transposition means for transposing, when the playback performance information corresponds to a key within the range set by the key range setting means, the playback performance information by a predetermined amount of transposition and outputting the transposed playback performance information; piano performance means for performing playback in response to the transposed playback performance information and detecting a state of operation of keys in the keyboard to provide key operation information; selection means for selecting key operation information corresponding to a key in the record area from amont the key operation information provided by the piano performance means and outputting the selected information as the record performance information; delay means for delaying the playback performance information by a predetermined period of time determined on the basis of dynamic characteristics of a string hammering section of the automatic performance piano; and synthetic recording means for synthesizing the delayed playback performance information and the record performance information and providing the synthesized information to the memory means to be stored therein.