New Features Using Robust MVDR Spectrum of Filtered Autocorrelation Sequence for Robust Speech Recognition
Figure 3
The block diagram for extracting the proposed new front-end based on robust MVDR spectrum of filtered autocorrelation sequence, namely PMSR and R-PMSR features. The filter applied to unbiased autocorrelation sequence is the RAS filter according to (12). The subband weighting for R-PMSR features is calculated according to (14) and (6).
