shithub: aubio

Info  •  Files  •  Log  •  Branches

src/spectral/phasevoc.c: perfect reconstruction for overlap = 50% without modifications

--- a/src/spectral/phasevoc.c

+++ b/src/spectral/phasevoc.c

@@ -66,7 +66,10 @@

   /* unshift */

   fvec_ishift(pv->synth);

   /* windowing */

-  fvec_weight(pv->synth, pv->w);

+  // if overlap = 50%, do not apply window (identity)

+  if (pv->hop_s * 2 < pv->win_s) {

+    fvec_weight(pv->synth, pv->w);

+  }

   /* additive synthesis */

   aubio_pvoc_addsynth(pv, synthnew);

 }

@@ -124,6 +127,8 @@

     pv->scale = 2./3.;

   } else if (win_s == hop_s * 8) {

     pv->scale = 1./3.;

+  } else if (win_s == hop_s * 2) {

+    pv->scale = 1.;

   } else {

     pv->scale = .5;

   }