METHOD FOR ENCODING ACOUSTIC SIGNALS AND METHOD FOR SEPARATING ACOUSTIC SIGNALS

摘要

PROBLEM TO BE SOLVED: To provide a method for encoding an acoustic signal and a method for separating the acoustic signals which enables faithful reproduction of an acoustic signal obtained from a performance based on a plurality of sound sources. SOLUTION: A unit section is set for time-series acoustic signals, signal analyses are performed for each unit section, and a spectrum which is the set of a frequency and signal strength is prepared for each unit section (a). A standard deviation in each peak position of a plurality of mountains appearing in the spectrum is calculated to separate the acoustic signals according to the value of the standard deviation (b) (c).