comparison data/fft/FFTDataServer.cpp @ 295:a2dc34ce146a

* Window should be centred on its nominal time.  I'm not sure what the
  reasoning was behind the previous formulations of these two lines.

     if (cache->haveSetColumnAt(col)) return;
 
     int startFrame = m_windowIncrement * x;
     int endFrame = startFrame + m_windowSize;
 
-    startFrame -= int(m_windowSize - m_windowIncrement) / 2;
-    endFrame   -= int(m_windowSize - m_windowIncrement) / 2;
+    startFrame -= int(m_windowSize) / 2;
+    endFrame   -= int(m_windowSize) / 2;
     size_t pfx = 0;
 
     size_t off = (m_fftSize - m_windowSize) / 2;
 
     for (size_t i = 0; i < off; ++i) {