| 摘要 |
A signal processing device includes a signal transform unit which generates observation signals in the time frequency domain, and an audio source separation unit which generates an audio source separation result, and the audio source separation unit includes a first-stage separation section which calculates separation matrices for separating mixtures included in the first frequency bin data set by a learning process in which Independent Component Analysis is applied to the first frequency bin data set, and acquires a first separation result for the first frequency bin data set, a second-stage separation section which acquires a second separation result for a second frequency bin data set by using a score function in which an envelope is used as a fixed one, and executing a learning process for calculating separation matrices for separating mixtures, and a synthesis section which generates the final separation results by integrating the first and the second separation results.
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