For unresolved T-F unit, computation of the mixture coefficients is different from resolved.
While the forth mixture coefficient is small, because no channels were dominated by the third or the fifth harmonic whose frequencies are 300 Hz and 500 Hz, respectively.
Overall, the mixture STFT coefficients are written as x ( n, f ) = H ( f ) s ( n, f ) + b ( n, f ) (21).
Lately, a Gaussian framework has emerged where the mixture STFT coefficients are modeled as a function of the power spectra and the spatial covariance matrices of the sources, and separation is achieved by multichannel Wiener filtering [9 11].
The generic representation CaHbH∗cH∗∗dH∗∗∗eO2(OH f for the mixtures was developed and their coefficients were used as parameters to describe the OT.
In formula (6), there are four parameters component number, Gaussian means, Gaussian variances, and Gaussian mixture coefficients to be computed.
It means that, in case one reaches to system with close thermodynamic behavior to this system (which is a lumped mixture), theses delumping coefficients are similar in both systems.
We say that variable S i is separated from the mixture when all coefficients are zero except α i, i.e. α i = 1 and α j = 0 for every j ≠ i.
All correlation coefficients were negative.
All coefficients were equally weighted.
