Patent ID: 9449611
Filing Date: 2016-09-20
CPC Classification: G10L

Claim Text:
1. A non-transitory computer readable medium containing computer executable instructions for extracting a reference representation from a mixture representation to generate a residual representation, the reference representation, the mixture representation, and the residual representation being time-frequency representations of collections of acoustical waves stored on computer readable media, the medium comprising: computer executable instructions for applying a time-frequency transform to a time-domain representation of acoustical waves corresponding to the mixture representation in order to obtain the mixture representation; computer executable instructions for performing an estimation-correction loop that includes, at each iteration, an estimation function and a correction function, the computer executable instructions for performing the estimation-correction loop comprising: computer executable instructions for producing, using the mixture representation and the time-frequency version of the reference representation, a new corrected power spectral density of the reference representation; computer executable instructions for filtering the mixture representation using the estimated power spectral density of the residual representation and the corrected power spectral density of the reference representation; and computer executable instructions for storing the residual representation.