SYSTOLIX HAVE RELEASED FILTERSIM VERION 2.0 - INTEGRATED FILTER DESIGN, SIMULATION AND ANALYSIS A fully working trial version of FilterSim 2.0 can be downloaded now from Systolix web site at http://www.systolix.com/swdownload.htm. FilterSim is the latest DSP development tool from Systolix. It combines a sophisticated multi-stage filter design tool with an integrated digital simulator. Simulation results can be viewed using the built-in signal viewer and analysis tools, allowing designers to study filter characteristics and quantisation effects in detail. Version 2.0 is a complete rewrite of the tool, it includes a new simplified user interface to streamline the process of specifying complex multi-stage filters. Here is a summary of the key features, more information can be found at http://www.systolix.com/fsintro.htm. * FILTER SPECIFICATION & DESIGN * Import externally generated FIR / IIR coefficients for analysis / re-quantisation Design filters to user specified quantisation Export coefficients Simple graphical entry of filter networks - Support of multi-stage (FIR / IIR / mixed) - Support for multi-rate filters (decimating / interpolating / resampling) - Support for multiple levels of quantisation in a single network Support for multiple filter types including IIR Filters - Butterworth / Chebychev I-II / Elliptic - Low Pass / High Pass / Band Pass / Band Stop Windowed FIR Filters - Kaiser / Blackman / Von Hann / Hamming / Rectangular - Low Pass / High Pass / Band Pass / Band Stop Equiripple FIR filters - Low Pass / High Pass / Band Pass / Band Stop Half-Band FIR Filters (Window & Equiripple) Pulse-shaping Filters - Raised Cosine / Root Raised Cosine / Gaussian Hilbert Transforms * FILTER SIMULATION * Extensive simulation capabilities including - Fast, optimised simulation engine - Built in signal generation functions - Import user test data - User definable quantisation for coefficients and data - Define unique quantisation per stage * FILTER ANALYSIS * Powerful analysis capabilities including - Graphical view of magnitude/phase/impulse response - Built-in FFT - Graphical viewer for simulation/FFT data - Automatic system transfer function evaluation - Automatic calculation of SNR / THD For further enquires about FilterSim please email filtersim@systolix.co.uk.