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PITCH EXTRACTION METHOD, SINGING SKILL EVALUATION METHOD, SINGING TRAINING PROGRAM, AND KARAOKE MACHINE

机译：音调提取方法，单技能评估方法，单训练程序和卡拉OK机

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摘要

PPROBLEM TO BE SOLVED: To provide a pitch extraction method having high frequency resolution suitable for singing skill evaluation. PSOLUTION: An auto-correlation function is calculated from an input voice signal. Then, the auto-correlation function is divided into partial correlations for each of a plurality of frequency bands and the partial correlations of respective bands are superposed and synthesized to calculate a synthetic auto-correlation function in which the frequency resolution of the upper register is compensated by the frequency resolution of the lower register. When a frequency for providing a maximum value to the synthetic auto-correlation function is detected as a pitch, the whole registers of human singing voice which is 4 [oct] and more can be accurately analyzed. Thus, the extracted pitch is applied to a singing skill evaluation apparatus and a singing training program. PCOPYRIGHT: (C)2008,JPO&INPIT

机译：

要解决的问题：提供一种具有高频率分辨率的音调提取方法，适合于歌唱技巧评估。

解决方案：根据输入的语音信号计算自相关函数。然后，将自相关函数划分为多个频带中的每个频带的部分相关，并且将各个频带的部分相关进行叠加并合成以计算合成的自相关函数，其中补偿了上位寄存器的频率分辨率。由低位寄存器的频率分辨率决定。当检测到用于向合成自相关函数提供最大值的频率作为音调时，可以精确地分析4 [oct]或更多的人类唱歌声音的整体。因此，所提取的音调被应用于歌唱技巧评估设备和歌唱训练程序。

版权：（C）2008，日本特许厅＆INPIT 展开▼

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公开/公告号JP2008015211A

专利类型
公开/公告日2008-01-24

原文格式PDF
申请/专利权人 DDS:KK;UME TECH KK;
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申请/专利号JP20060186158
发明设计人 TAKEUCHI HIDEYO;HOGURO MASAHIRO;UMEZAKI TAIZO;
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申请日2006-07-06
分类号G10K15/04;G10L11/04;G10L11;G10L21/06;G09B15;
国家 JP
入库时间 2022-08-21 20:22:24

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