comparison dsp/chromagram/ConstantQ.cpp @ 64:6cb2b3cd5356

* Refactor FFT a little bit so as to separate construction and processing
  rather than have a single static method -- will make it easier to use a
  different implementation
* pull in KissFFT implementation (not hooked up yet)

     // for each bin value K, calculate temporal kernel, take its fft to
     //calculate the spectral kernel then threshold it to make it sparse and 
     //add it to the sparse kernels matrix
     double squareThreshold = m_CQThresh * m_CQThresh;
 
-    FFT m_FFT;
+    FFT m_FFT(m_FFTLength);
 	
     for (unsigned k = m_uK; k--; ) 
     {
         for (unsigned u=0; u < m_FFTLength; u++) 
         {

             hammingWindowIm[i] = hammingWindowIm[i + m_FFTLength/2];
             hammingWindowIm[i + m_FFTLength/2] = temp;
         }
     
 	//do fft of hammingWindow
-	m_FFT.process( m_FFTLength, 0, hammingWindowRe, hammingWindowIm, transfHammingWindowRe, transfHammingWindowIm );
+	m_FFT.process( 0, hammingWindowRe, hammingWindowIm, transfHammingWindowRe, transfHammingWindowIm );
 
 		
 	for (unsigned j=0; j<( m_FFTLength ); j++) 
 	{
 	    // perform thresholding