shithub: opus

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Switched to mdct mask computation

--- a/libcelt/celt.c

+++ b/libcelt/celt.c

@@ -265,12 +265,15 @@

    //for (i=0;i<(B+1)*C*N;i++) printf ("%f(%d) ", in[i], i); printf ("\n");

    /* Compute MDCTs */

    compute_mdcts(&st->mdct_lookup, st->window, in, X, N, B, C);

-   

-   compute_masking(X, mask, B*C*N, st->Fs);

-   /* Invert and stretch the mask to length of X */

-   for (i=B*C*N-1;i>=0;i--)

-      mask[i] = 1/(1+mask[i>>1]);

-   

+

+   compute_mdct_masking(X, mask, B*C*N, st->Fs);

+

+   /* Invert and stretch the mask to length of X 

+      For some reason, I get better results by using the sqrt instead,

+      although there's no valid reason to. Must investigate further */

+   for (i=0;i<B*C*N;i++)

+      mask[i] = 1/(.1+mask[i]);

+

    /* Pitch analysis */

    for (c=0;c<C;c++)

    {