Optimal two-term offset windowing for fractionaldelay
Anush Yardim, G.D. Cain, P. Henry · Electronics Letters · 1996
Fractional-sample delay in discrete-time systems is often provided by special FIR filters which are asymmetric about mid-sequence. Here we preserve the appeal of sinc-sequence fractional delayors (simplicity and single-parameter delay tuning) by devising a two-term raised-cosine window which delivers fractional-delay filters comparable to the best obtainable by highly regarded optimisation approaches.