A computationally efficient, low-power (107.6 $mu$W@1.1 V), small core area (2.82 $text{mm}^2$@0.35 $ mu$m), 16-band nonuniformly spaced digital filter bank with stop-band attenuation of more than 60 dB is designed and implemented for hearing aid applications using a 0.35 $ mu$m CMOS process. The low computational complexity of the filter bank is achieved using a frequency response masking technique with multiple band-edge shaping filters. The proposed filter bank yields significant improvements in both power consumption and group delay. By coefficient sharing scheme, the implementation of such a filter bank requires only three multipliers. (Source: IEEE Transactions on Biomedical Circuits and Systems)
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