Получение спектра (bass.dll)

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include "bass.h"
#include <iostream>
#include <string>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
float fft[512];
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
BASS_Init(-1, 44100, 0, 0, NULL);
Memo1->Lines->Add(IntToStr(BASS_ErrorGetCode()));
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
HSTREAM stream=BASS_StreamCreateFile(FALSE, "audio.mp3", 0, 0, 0);
Memo1->Lines->Add(IntToStr(BASS_ErrorGetCode()));
if (stream!=NULL)
{
BASS_ChannelGetData(stream, fft, BASS_DATA_FFT1024);
Memo1->Lines->Add(IntToStr(BASS_ErrorGetCode()));
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
for (int i=200; i<210; i++)
{
Memo1->Lines->Add(FloatToStr(fft[i]));
}
}
//---------------------------------------------------------------------------