Research about the evaluation of a vocal sound by FFT analysis.

基于FFT分析的声音评价研究

• 批准号: 09680275
• 负责人: TANABE Takashi
• 金额: $ 1.47万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680275/
• 关键词: expression; voice; expert; evaluation; spectrum; FFT; analysis of vocal sound; principal component analysis; 熟達; 多変量解析

It was many for until now to evaluate a expression in a subjective method, because that is why appraisal about music expression is it is difficult to objectify very much. But this research does to evaluate a performance in point of science a purpose. And FET analysis and principal component analysis were carried out about the sample of a vocal sound. Then it could more objectively evaluate about appraisal of music expression.A vocal sound of the voice of adult, the countertenor and the child who went since before, is analyzed in this research. It thinks, although the kind of a voice differs, that 3 kinds of these the voices are most appropriate to compare, because the height of a sound resembles very much. As a result a child expresses in some view points in a child On the other hand a expert's judgment to total target from many viewpoints. It caught a voice as for a wave-like comprehensively. And the result whom also, analyzed of a expert's judgment and the wave-like almost agreed.Therefore it thought can objectively to evaluate about appraisal about a voice. On the other hand a new view point could be found about a child's study activity to the way of a teacher's help.

迄今为止，用主观的方法来评价一种表达的情况很多，因为这就是为什么对音乐表达的评价很难客观化。但这项研究确实是为了从科学角度评估表现。并且对人声样本进行了FET分析和主成分分析。这样就可以更加客观地评价音乐表现力的评价。本研究对成人的声音、假声男高音以及之前的儿童的声音进行了分析。它认为，尽管声音的种类不同，但这三种声音是最适合进行比较的，因为声音的高度非常相似。其结果是一个孩子在一个孩子的某些观点上表达了一个专家从多个观点对总目标的判断。捕捉到了波浪般的声音。而且专家的判断和波浪式分析的结果也几乎一致。因此认为可以客观地对声音的评价进行评价。另一方面，对于孩子的学习活动，老师的帮助方式也可以找到新的视角。