Lines Matching defs:ATH
183 compute the ATH for each scalefactor band
186 Input: 3.3kHz signal 32767 amplitude (3.3kHz is where ATH is smallest = -5db)
203 in sfb=12 = -11 - 96 = -107db = ATH at 3.3kHz.
205 ATH formula for this wave: -5db. To adjust to LAME scaling, we need
206 ATH = ATH_formula - 103 (db)
207 ATH = ATH * 2.5e-10 (ener)
226 /* modify the MDCT scaling for the ATH and convert to energy */
235 FLOAT *const ATH_l = gfc->ATH->l;
236 FLOAT *const ATH_psfb21 = gfc->ATH->psfb21;
237 FLOAT *const ATH_s = gfc->ATH->s;
238 FLOAT *const ATH_psfb12 = gfc->ATH->psfb12;
291 /* no-ATH mode:
292 * reduce ATH to -200 dB
312 gfc->ATH->floor = 10. * log10(ATHmdct(cfg, -1.));
551 * this adjusts the ATH, keeping the original noise floor
587 returns number of sfb's with energy > ATH
596 ATH_t const *const ATH = gfc->ATH;
605 xmin = athAdjust(ATH->adjust_factor, ATH->l[gsfb], ATH->floor, cfg->ATHfixpoint);
692 tmpATH = athAdjust(ATH->adjust_factor, ATH->s[sfb], ATH->floor, cfg->ATHfixpoint);
973 gfc->pinfo->thr[gr][ch][sfb] = en1 * Max(en0 * ratio->thm.l[sfb], gfc->ATH->l[sfb]);
1011 en1 * Max(en0 * ratio->thm.s[sfb][i], gfc->ATH->s[sfb]);