DIGITAL SIGNAL PROCESSING METHOD, LEARNING METHOD, APPARATUSES FOR THEM, AND PROGRAM STORAGE MEDIUM

摘要

Power spectrum data is calculated from a digital audio signal D10. A part of the power spectrum data is extracted from the power spectrum data. The class on the basis of the part of the power spectrum data is determined. The digital audio signal D10 is converted by a prediction method corresponding to the class. Conversion further adapted to the feature of the digital signal D10 is carried out.