| 摘要 |
<P>PROBLEM TO BE SOLVED: To properly determine tone pitch and register corresponding to a user. <P>SOLUTION: A transition pattern of singing tone pitch along a time axis when a user sings a song is compared with a transition pattern of a guide tone pitch k when the song is sung properly, thereby calculating an error d between the transition patterns and reflecting it in an error distribution of the user. Then, the guide tone pitch k where the error ratio obtained by comparing differences Δd from errors d in adjacent guide tone pitches k-1 and k+1 becomes minimum is determined to be the highest tone pitch kup in the register of the user corresponding to the error distribution (s310-s330). Similarly, the guide tone pitch k where the error ratio obtained by comparing differences from errors in adjacent guide tone pitches k-1 and k+1 becomes minimum is determined to be the lowest pitch klo in the register of the user corresponding to the error distribution (s410-s430). The register of the user is determined based on the highest pitch kup and the lowest pitch klo (s260). <P>COPYRIGHT: (C)2010,JPO&INPIT |
