Automatic performance technique using audio waveform data

摘要

A plurality of sets of waveform data and switchover position information indicative of, for each of the sets of waveform data, one or more possible switchover positions in the waveform data are prestored, and one set of waveform data is reproduced in accordance with the passage of time. During reproduction of a first set of waveform data, a second set of waveform data is designated at given timing in response to a user's instruction. Control is performed such that the waveform data to be reproduced is switched from the first set of waveform data over to the second set of waveform data in response to waveform data reproduction timing arriving at one of the possible switchover positions indicated by the switchover position information corresponding to the second set of waveform data. Reproduction of the second set of waveform data is started at the switchover position corresponding to the reproduction timing.

主权项

1. An automatic performance apparatus comprising:
a storage section configured to store therein a plurality of sets of waveform data, and switchover position information indicative of, for each of the sets of waveform data, one or more possible switchover positions in the waveform data, wherein each set of the sets of waveform data has a time length of one or more measures and each of the one or more possible switchover positions specifies a unique time position within the one or more measures, other than a start time or an end time of the one or more measures; a reproduction section configured to reproduce any one of the sets of waveform data, stored in said storage section, in accordance with passage of time; a designation section adapted to designate, during reproduction by said reproduction section of a first set of waveform data of the plurality of sets of waveform data, a second set of waveform data of the plurality of sets of waveform data; and a control section configured to perform control such that said reproduction section switches the waveform data to be reproduced thereby from the first set of waveform data over to the second set of waveform data in response to waveform data reproduction timing of said reproduction section arriving at one of the possible switchover positions indicated by the switchover position information corresponding to the second set of waveform data designated via said designation section, reproduction of the second set of waveform data being started at the possible switchover position corresponding to the reproduction timing.