| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method, an apparatus and a system for acoustic signal processing and a computer program, capable of independently increasing or decreasing a predetermined sound component of non-harmonic structure included in an acoustic signal, without affecting other sound components. <P>SOLUTION: The predetermined sound component of non-harmonic structure included in the acoustic signal is extracted. The predetermined sound component extracted above is increased or decreased. At this time, the spectrum of the acoustic signal is calculated through frequency analysis, and the spectrum corresponding to the predetermined sound component of non-harmonic structure is extracted, which is then increased or decreased. The extraction of the predetermined sound component of non-harmonic structure is performed on the basis of a template sound component stored in advance. At this time, the above template sound component is corrected so that the difference between the extracted sound component and the template sound component becomes no greater than a predetermined value. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
