Engineering and Technology Journal

Abstract

An approach for low cost uniform and octave filter banks for Audio applications
is proposed. The analysis stages of these filterbanks are based on IIR allpass second
order sections with modified response. The modification is performed by forcing
phase non-linearity at the analysis stage to be out of region of interest. By
oversampling, the non-linear segments near the band edges are removed through
subsequent synthesis filtering. Compared to existing literature designs, the new
approach offers a substantial lowering in computational power, and a lower
input/output delay.The simulation and testing of this technique was performed using
MATLAB software package