Example 1

    uses MtxExpr, Math387, MtxVec, SignalUtils, MtxVecTee, MtxVecEdit;

    procedure TForm1.Button1Click(Sender: TObject);
    var b,c,Response1, Response2: Vector;
    begin
        Tone(b, 256,6/256,0,1);    
        b := b + 4; //generate 6 periods within 256 samples, Phase = 0, Amplt = 1
        c.Copy(b);
        RemoveDC(b);
        DrawIt([c,b],['Original signal','Signal without DC']);
        FrequencyResponse(c,nil,Response1,1,True);
        FrequencyResponse(b,nil,Response2,1,True);
        DrawIt([Response1, Response2],['Spectrum: original signal','Spectrum: signal without DC']);
    end;

    #include "MtxVecCPP.h" //MtxVecCPP.cpp must be included in the project
    #include "MtxVecEdit.hpp"
    #include "MtxVecTee.hpp"
    #include "SignalUtils.hpp"

    void __fastcall TForm1::BitBtn1Click(TObject *Sender)
    {
        Vector b,c, Response1, Response2;

        b = Sin(Ramp(256,0,2*PI*6/256)) + 4;
        c->Copy(b);
        RemoveDC(b);
        DrawIt(OPENARRAY(TVec*,(c,b)),OPENARRAY(AnsiString,("Original signal","Signal without DC")));
        FrequencyResponse(c,NULL,Response1,1,true);
        FrequencyResponse(b,NULL,Response2,1,true);
        DrawIt(OPENARRAY(TVec*,(Response1,Response2)),OPENARRAY(AnsiString,("Spectrum: original signal","Spectrum: without DC")));
    }

    using Dew.Math;
    using Dew.Math.Editors;
    using Dew.Math.Units;
    using Dew.Signal;
    using Dew.Signal.Units;
    using Dew.Math.Tee;
    using Dew.Signal.Tee;

    private void button1_Click(object sender, EventArgs e)
    {
        Vector b = new Vector(0);
        Vector c = new Vector(0);
        Vector Response1 = new Vector(0);
        Vector Response2 = new Vector(0);

        SignalUtils.Tone(b, 256, 6.0 / 256, 0, 1, false);
        b = b + 4;
        c.Copy(b);
        SignalUtils.RemoveDC(b);
        TeeChart.DrawIt(new TVec[2] {c,b}, new string[2] {"Original signal","Signal without DC"},"Time signals", false);
        SignalUtils.FrequencyResponse(c, null, Response1, 1, true, TSignalWindowType.wtRectangular, 0);
        SignalUtils.FrequencyResponse(b, null, Response2, 1, true, TSignalWindowType.wtRectangular, 0);
        TeeChart.DrawIt(new TVec[2] {Response1,Response2}, new string[2] {"Spectrum: original signal","Spectrum: signal without DC"}, "Frequency spectrum", false);
    }