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src/spectral/phasevoc.c: set scaling to 1./3 if hop_s = win_s / 8, .5 otherwise

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

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

@@ -120,7 +120,13 @@

   pv->hop_datasize = pv->hop_s * sizeof(smpl_t);

   // for reconstruction with 75% overlap

-  pv->scale = 2./3.;

+  if (win_s == hop_s * 4) {

+    pv->scale = 2./3.;

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

+    pv->scale = 1./3.;

+  } else {

+    pv->scale = .5;

+  }

   return pv;