Many signal processing applications require digital filters with variable frequency
characteristics, especially the filters with variable bandwidth and center frequency. Due to …

In the paper, a new method is proposed for the design of variable fractional-order (VFO) FIR
differintegrators. Comparing with the existing methods, the elements of relevant matrices can …

Variable digital filters are widely used in a number of applications of signal processing
because of their capability of self-tuning frequency characteristics such as the cutoff …

In this paper, the technique of McClellan transformation is applied to design variable 2-D FIR
digital filters. Compared with the conventional transformation, the 2-D transformation …

This paper aims to design variable fractional-delay (VFD) finite-impulse response (FIR)
filters with controllable cutoff frequencies. Different with the existing designs, a particular …

Variable digital filters (VDFs) are useful for various signal processing and communication
applications where the frequency characteristics, such as fractional delays and cutoff …

Most of variable fractional delay (VFD) filters adopt the well-known Farrow structure that
assumes an algebraic polynomial approximation to the varying impulse response. The …

This paper investigates the optimal design of allpass variable fractional delay (VFD) filters
with coefficients expressed as sums of signed powers-of-two terms, where the weighted …

In this letter, an iterative weighted least-squares (LS) approach is proposed for the design of
variable fractional-delay (VFD) finite impulse response (FIR) digital filters in minimax sense …

In this paper, a new sparsity‐optimised Farrow structure variable fractional delay (SFS‐VFD)
filter is proposed to address the aperture effect in wideband array. Our method is based on …