Author: kostya
Date: Tue Jul 1 18:42:53 2008
New Revision: 2642
Log:
Threshold correction should be performed two times
Modified:
aacenc/aacpsy.c
Modified: aacenc/aacpsy.c
==============================================================================
--- aacenc/aacpsy.c (original)
+++ aacenc/aacpsy.c Tue Jul 1 18:42:53 2008
@@ -420,6 +420,7 @@ static void psy_3gpp_process(AACPsyConte
for(ch = 0; ch < apc->avctx->channels; ch++){
float t0, pe, r;
if(pctx->b[ch] == 0.0f) continue;
+ for(i = 0; i < 2; i++){
pe = pctx->a[ch] - pctx->b[ch] * 4.0f *
log2(pow(pctx->thr[ch]/cpe->ch[ch].ics.num_swb, 0.25));
t0 = pow(2.0, (pctx->a[ch] - pe) / (4.0 * pctx->b[ch]));
r = pow(2.0, (pctx->a[ch] - pe_target) / (4.0 * pctx->b[ch])) - t0;
@@ -427,6 +428,7 @@ static void psy_3gpp_process(AACPsyConte
//add correction factor to thresholds
for(g = 0; g < apc->num_bands1024; g++)
pctx->band[ch][g].thr = modify_thr(pctx->band[ch][g].thr, r);
+ }
}
//determine scalefactors - 5.6.2
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