Patent ID: 7974420

Claim:
A mixed audio separation apparatus which separates a specific audio from among a mixed audio made up of audios, said apparatus comprising: a local frequency information generation unit operable to obtain pieces of local frequency information corresponding to local reference waveforms, based on the local reference waveforms and an analysis waveform which is a waveform of the mixed audio, each of the local reference waveforms (i) constituting a part of a reference waveform for analyzing a predetermined frequency, (ii) having a predetermined temporal/spatial resolution and (iii) including at least one of an amplification spectrum and a phase spectrum in the predetermined frequency; a specific audio's frequency feature value extraction unit operable to perform pattern matching between a first set which is the pieces of local frequency information and a second set of pieces of frequency information of a predetermined specific audio, and extract the first set of the pieces of local frequency information, based on a result of the pattern matching; and an audio signal generation unit operable to generate a signal of the specific audio, based on the first set of the pieces of local frequency information extracted by said specific audio's frequency feature value extraction unit.