A new pipeline implementation of an adaptive IIR filter for noise reduction application

The parallel form in adaptive IIR filtering is an efficient realization that provides robust stability monitoring with less complexity than that of the direct form. This paper presents an implementation of a two line parallel structure employing a real orthogonal transform and real coefficients second-order section as sub filters on FPGA. The architecture that is implemented is in pipeline fashion and it is independent from its building blocks and they may have their own implementation or other system numbering. We compare the throughput of our architecture with a Ti DSP (TMS320C3/spl times//4/spl times/), the results show that this architecture works better than the DSP.