code: def _align_waves(self, real_wave_mfcc, synt_wave_mfcc, synt_anchors):
          
          self.log(u"Creating DTWAligner...")
          aligner = DTWAligner(
              real_wave_mfcc,
              synt_wave_mfcc,
              rconf=self.rconf,
              logger=self.logger
          )
          self.log(u"Creating DTWAligner... done")
          self.log(u"Computing boundary indices...")
          boundary_indices = aligner.compute_boundaries(synt_anchors)
          self.log(u"Computing boundary indices... done")
          return boundary_indices
docs: Align two AudioFileMFCC objects,
          representing WAVE files.
  
          Return a list of boundary indices.