| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic signal processing method capable of realizing a high noise restraining effect by producing an appropriate weighting factor without the need of a complicated calculation. SOLUTION: The method includes a step of preparing at least in one dictionary a weighting factor used for imposing a weight, learned for optimizing an evaluation function defined by a learning sound signal with a weight imposed and a target sound signal corresponding to the learning sound signal; a step of presuming a noise component included in an input sound signal; a step of calculating a feature amount depending on the noise component of the input sound signal; a step of selecting from the dictionary a weighting factor corresponding to the feature amount; and a step of producing a processed output sound signal by imposing a weight to the input sound signal using the selected weighting factor. COPYRIGHT: (C)2009,JPO&INPIT
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