From Mitov Software
Delphi/C++ Builder VCL components library for fast Digital Signal Processing (DSP) and data visualization. Allows fast complex signal manipulations with zero lines of program code. SignalLab consists of SiganlPlayer, SignalLogger, Signal Generator for Sine, Triangle, Square, DC and Jaehne signals, Noise generators, Simple Scope, Waterfall, LowPass, HiPass, BandPass, BandStop filters, FIR, Arbitrary IIR,BiQuad IIR,FFT inverse FFT,DFT, inv. DFT,DCT,inv. DCT,Median,Hilbert,Haar,Power Spectrum,custom filters,signal combining components, arithmetic components, Cartesian, Polar converters, format converters, custom integer, real, and complex data filters, and much more. Free for non-commercial use.
Delphi or C++ Builder