The performance data alteration device, performance data alteration manner and the media null which records the program

摘要

PROBLEM TO BE SOLVED: To automatically alter the whole playing data without a feeling of physical disorder by retrieving data of the same kind with indicated data to be altered from actual playing data and altering or erasing the retrieved data according to an indication. ;SOLUTION: When a user indicates an alteration of sound volume in initial setting data, for example, from 50 to 80, a playing data altering device generates new initial setting data 52. The playing data altering device discriminates the kind of an even of the alteration that the user indicates. Then an event of the same kind with the even is erased from the actual playing data and actual playing data 53 are generated. For example, an even such as a sound volume alteration 60 and a sound volume alteration 70 is erased. Then all the events of sound volume alterations in the actual playing data 53 are erased and then the setting of sound volume 80 in the initial setting data 52 becomes effective to the whole in the playing data 51 in principle. The user becomes able to set the reference sound volume of the whole music to 80.;COPYRIGHT: (C)1998,JPO