Lower-bound eye widths of multilevel minimum-bandwidth (MB) systems are presented as function of a parameter indicating the grade of the MB property. They are then compared with actual eye widths of some MB partial-response systems, a linear subclass of the generalized MB system. Our result can be used in securing the minimum guaranteed eye widths for real implemented MB systems.>

Speaker and phoneme recognition is investigated based on the discrete rectangular wave transform (DRWT). The DRWT is one of the discrete Fourier preprocessing transforms (DFPTs) which corresponds to the first stage in two-stage algorithms to represent discrete trigonometric transforms such as the discrete Fourier transform (DFT). The DRWT is much faster and easier to implement than the DFT. The recognition experiments performed also show that performance of recognition based on DRWT speech spectrograms is comparable to the performance of recognition based on DFT speech spectrograms.>