声楽の習熟度に関連する周波数特性に基づく音響特徴量分析条件の検討

抄録

For the purpose of creating learning support tool for singing instruction, three acoustical parameters based on Singer's formant shown in classical singing voice is defined and discussed. Since Singer's formant is considered to be related to proficiency of classical singing voice, acoustical parameters that represent the relationship between them is required. SFR, Q, and the second convex point represent ratio, sharpness, and height of Singer's formant, respectively. SFR is defined based on the FFT spectrum. Q and the second convex point are defined based on the LPC spectrum. Three analytical questions as follow are examined and shown. (1) Definition of autocorrelation varies sharpness of spectral envelope, and it changes value of Q. (2) The second convex point is in the relation of the logarithm of Q. (3) To keep order of value of Q of various singings, adequate LPC analysis order is 12.