发明名称 |
VIBRATO DETECTION METHOD, SINGING TRAINING PROGRAM, AND KARAOKE MACHINE |
摘要 |
PROBLEM TO BE SOLVED: To provide a vibrato detection method suited to singing skill evaluation and having high reliability, a singing training program to which the vibrato detection method is applied, and a Karaoke machine having a singing skill evaluation function capable of calculating a score closely rotated to human subjectivity. SOLUTION: A pitch variationΔf is calculated from an input voice signal. A periodicity calculation module 143A performs auto-correlation analysis with respect to the pitch variationΔf for a plurality of frames to detect vibratos. Since the auto-correlation analysis is used for the pitch variationΔf, vibrato detection resistant to noise or disturbance can be achieved. A positive phase/reverse phase synthesis module 143B can perform highly reliable vibrato detection by synthesizing the correlation function of a positive phase and the correlation function of a reverse phase which are calculated from the auto-correlation function. Detected vibrato information is used for the singing training program and the Karaoke machine. COPYRIGHT: (C)2008,JPO&INPIT
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申请公布号 |
JP2008015213(A) |
申请公布日期 |
2008.01.24 |
申请号 |
JP20060186164 |
申请日期 |
2006.07.06 |
申请人 |
DDS:KK;UME TECH KK |
发明人 |
TAKEUCHI HIDEYO;HOGURO MASAHIRO;UMEZAKI TAIZO |
分类号 |
G10K15/04;G09B15/00;G10L11/00;G10L11/04 |
主分类号 |
G10K15/04 |
代理机构 |
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代理人 |
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地址 |
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