Digital filter design
Discrete-time signal processing
Discrete-time signal processing
Multirate systems and filter banks
Multirate systems and filter banks
A hybrid method for the design of oversampled uniform DFT filter banks
Signal Processing
Signal processing in high-end hearing aids: state of the art, challenges, and future trends
EURASIP Journal on Applied Signal Processing
Design of FIR Nyquist filters with low group delay
IEEE Transactions on Signal Processing
Uniform FIR filterbank optimization with group delay specifications
IEEE Transactions on Signal Processing
A direct optimization method for low group delay FIR filter design
Signal Processing
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In this contribution we present a method to design prototype filters of oversampling uniform complex-modulated FIR filter bank pairs. Especially, we present a noniterative two-step procedure: (i) design of analysis prototype filter with minimum group delay and approximately linear-phase frequency response in the passband and the transition band and (ii) Design of synthesis prototype filter such that the filter bank pairs distortion function approximates a linear-phase allpass function. Both aliasing and imaging are controlled by introducing sophisticated stopband constraints in both steps. Moreover, we investigate the delay properties of oversampling uniform complex-modulated FIR filter bank pairs in order to achieve the lowest possible filter bank delay. An illustrative design example demonstrates the potential of the design approach.