title: wav-to-midi conversion
body: <p>I'm new to this field - but I need to perform a WAV-to-MIDI conversion in java.
  Is there a way to know what exactly are the steps involved in WAV-to-MIDI conversion?
  I have a very rough idea as in you need to;
  sample the wav file, filter it, use FFT for spectral analysis, feature extraction and then write the extracted features on to MIDI.
  But I cannot find solid sources or papers as in how to do all that?
  Can some one give me clues as in how and where to start?
  Are there any Open Source APIs available for this WAV-to-MIDI conversion process? </p>
  
  <p>Advance thanks</p>