| 摘要 |
PURPOSE:To accurately delete information of musical sounds of low frequency in use by retrieving stored information of a use condition storage means based on the condition indication of an operating means and deleting all musical sounds satisfying the condition or a prescribed number of musics out of them from a musical sound information storage means. CONSTITUTION:Musical sound information will be deleted from a musical sound information storage means 14, a music deleting condition is set and indicated by an operation means 16a. A control part 10 retrieves data in a use condition storage means 18 to find musics satisfying the music deleting condition from the operation means 16a because the last read and reproducing date and the frequency in read and reproducing of each music are stored in the use condition storage means 18, and all of musics extracted by retrieval or a prescribed number of musics out of them are deleted. Thus, musical sound information of musics of low frequency in use which satisfy the designated condition are accurately deleted. |
