| 摘要 |
<p>An automatic pitch following system includes a pitch detector (11) which computes the fundamental frequency of an user voice at intervals of a predetermined time, a musical scale sequence recorder (12) which converts the fundamental frequency of the user voice into a user scale sequence and records it, a musical scale matcher (13) which compares the user scale sequence with a main melodic scale sequence of a predetermined musical score by means of dynamic time warping or calibrating, a pitch shift judgement device (16) which determines whether the pitch of the accompanying music to shift and when to shift pitch, a musical synthesizer (17) which automatically adjusts the scale parameters of the musical synthesizer when the pitch shift judgement device determines to shift pitch. The musical synthesizer synthesizes the musical score digital recorded to obtain actual musical wave and outputs together with the user singing voice via a predetermined mixer (18).</p> |
