shithub: opus

Info  •  Files  •  Log  •  Branches

Fix DCT normalization

--- a/dnn/denoise.c

+++ b/dnn/denoise.c

@@ -218,7 +218,7 @@

     for (j=0;j<NB_BANDS;j++) {

       sum += in[j] * common.dct_table[j*NB_BANDS + i];

     }

-    out[i] = sum*sqrt(2./22);

+    out[i] = sum*sqrt(2./NB_BANDS);

   }

 }

@@ -231,7 +231,7 @@

     for (j=0;j<NB_BANDS;j++) {

       sum += in[j] * common.dct_table[i*NB_BANDS + j];

     }

-    out[i] = sum*sqrt(2.*22)*(1.f/NB_BANDS);

+    out[i] = sum*sqrt(2./NB_BANDS);

   }

 }

-- 

⑨