Configurable VIIRF - Versatile IIR Filter for Any Transfer Function

This project comprises the VHDL description and configuration script of a configurable IIR filter.

The VIIRF can implement any transfer function (highpass, lowpass etc.) that can be represented as a cascade of second-order sections (SOS), which is an numerically very stable form of implementation.

The configuration script takes the (floating-point) SOS-matrix (and gain-matrix G, if required) and configures the (quantized) filter. It also simulates a step-response and generates testbench-files.

No vendor-specific language constructs (e.g., Block-RAM or DSP-cores) are used, such that the filter is usable in any development environment.

The sources and documentation are hosted at GitHub:
https://github.com/MauererMVIIRF