| 摘要 |
PROBLEM TO BE SOLVED: To provide tone quality estimating equipment and a tone quality estimating method which change a tone to be estimated to a physical quantity so as to fit to feeling in human acoustic sense, and enable tone quality estimation. SOLUTION: The tone quality estimating equipment is constituted of a noise level calculating means 3 for measuring a noise level NLi of the tone to be estimated; an accumulated variation level calculating means 2 for measuring variation with time of a tone, summing a peak difference dBn of the variation level, and calculating an accumulated variation level CFLi; and an estimating means 4 for showing a relation of estimation points of a previously set noise level and the accumulated variation level. The accumulated variation level calculating means 2 consists of a converting means 1, an envelope converting means 11, a primary delay system response means 12, a variation level calculating means 13, and a variation level accumulating means 14. COPYRIGHT: (C)2004,JPO
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