1 0 0 0 OA ウェーブレット変換に及ぼすマザーウェーブレット関数の特徴
- 著者
- 高山 和敏 東 恒人 中川 紀美雄
- 出版者
- 岡山理科大学
- 雑誌
- 岡山理科大学紀要. A, 自然科学 (ISSN:02857685)
- 巻号頁・発行日
- vol.32, pp.173-186, 1996
Both effect of mother wavelet functions on wavelet transform and application method of wavelet transform to sound analysis are described in this paper. As for the former, in case that the speedup of calculation is desired Haar function, in case that qreater importance is attached to frequency components Meyer function, in case that qreater importance is attached to time components Mexican function and in case that both time and frequency components are checked Gabor function can be recommended for application, respectively. As for the later, in case that the distribution of frequency components as time passes is investigated Gabor function, furthermore, in case of minutely examining the difference between consonants and vowels Mexican function and in case of fully checking the distribution of formants in consonants or vowels Meyer function can be recommended for use, respectively. The effectiveness of properly using mother wavelet functions in sound analysis has been found as in the above.
1 0 0 0 OA 破裂子音のささやき音の特徴
- 著者
- 東 恒人 古川 暢隆 高山 和敏 中川 紀美男
- 出版者
- 岡山理科大学
- 雑誌
- 岡山理科大学紀要. A, 自然科学 (ISSN:02857685)
- 巻号頁・発行日
- vol.32, pp.271-279, 1996
This paper describes characteristics of whispered by compearing with voiced sound in case of plosive consonant. The following characteristics are shown. (1) Formants of back vowel almost agree with those of isolated vowel. (2) Back vowels influence on formants of constnant and attributes of synthesis sounds.