100     LOFILT = 1 /* index of lower filter */  enumerator
408       tC->lpcStartBand[LOFILT]   = (blockType == SHORT_WINDOW) ? 0 : ((sampleRate < 18783) ? 4 : 8);  in FDKaacEnc_InitTnsConfiguration()
409       tC->lpcStartLine[LOFILT]   = pC->sfbOffset[tC->lpcStartBand[LOFILT]];  in FDKaacEnc_InitTnsConfiguration()
412 …while (pC->sfbOffset[i] > (tC->lpcStartLine[LOFILT] + (tC->lpcStopLine - tC->lpcStartLine[LOFILT])…  in FDKaacEnc_InitTnsConfiguration()
417       tC->confTab.threshOn[LOFILT] = 1500;  in FDKaacEnc_InitTnsConfiguration()
420       tC->confTab.tnsLimitOrder[LOFILT] = tC->maxOrder - 7;  in FDKaacEnc_InitTnsConfiguration()
423       tC->confTab.tnsFilterDirection[LOFILT] = FILTER_DIRECTION;  in FDKaacEnc_InitTnsConfiguration()
426 …tC->confTab.acfSplit[LOFILT] = -1;  /* signal Merged4to2QuartersAutoCorrelation in FDKaacEnc_Merge…  in FDKaacEnc_InitTnsConfiguration()
429       tC->confTab.filterEnabled[LOFILT] = 1;  in FDKaacEnc_InitTnsConfiguration()
440 …FDKmemcpy(tC->acfWindow[LOFILT], acfWindowShort, FDKmin(sizeof(acfWindowShort), sizeof(tC->acfWind…  in FDKaacEnc_InitTnsConfiguration()
444 …FDKmemcpy(tC->acfWindow[LOFILT], acfWindowLong, FDKmin(sizeof(acfWindowLong), sizeof(tC->acfWindow…  in FDKaacEnc_InitTnsConfiguration()
455 …tC->lpcStartBand[LOFILT]         = FDKaacEnc_FreqToBandWithRounding(pCfg->filterStartFreq[LOFILT],…  in FDKaacEnc_InitTnsConfiguration()
456           tC->lpcStartLine[LOFILT]         = pC->sfbOffset[tC->lpcStartBand[LOFILT]];  in FDKaacEnc_InitTnsConfiguration()
459           tC->confTab.threshOn[LOFILT] = pCfg->threshOn[LOFILT];  in FDKaacEnc_InitTnsConfiguration()
462           tC->confTab.tnsLimitOrder[LOFILT] = pCfg->tnsLimitOrder[LOFILT];  in FDKaacEnc_InitTnsConfiguration()
465           tC->confTab.tnsFilterDirection[LOFILT] = pCfg->tnsFilterDirection[LOFILT];  in FDKaacEnc_InitTnsConfiguration()
468           tC->confTab.acfSplit[LOFILT] = pCfg->acfSplit[LOFILT];  in FDKaacEnc_InitTnsConfiguration()
471           tC->confTab.filterEnabled[LOFILT] = pCfg->filterEnabled[LOFILT];  in FDKaacEnc_InitTnsConfiguration()
475 …cEnc_CalcGaussWindow(tC->acfWindow[LOFILT], tC->maxOrder+1, sampleRate, granuleLength, pCfg->tnsTi…  in FDKaacEnc_InitTnsConfiguration()
637     if ( (acfSplit[LOFILT]==-1) || (acfSplit[HIFILT]==-1) ) {  in FDKaacEnc_MergedAutoCorrelation()
639       idx0 = lpcStartLine[LOFILT];  in FDKaacEnc_MergedAutoCorrelation()
640       i    = lpcStopLine - lpcStartLine[LOFILT];  in FDKaacEnc_MergedAutoCorrelation()
647       FDK_ASSERT(acfSplit[LOFILT]==1);  in FDKaacEnc_MergedAutoCorrelation()
650       idx0 = lpcStartLine[LOFILT];  in FDKaacEnc_MergedAutoCorrelation()
687               _rxx1[lag] = fMult(scaleValue(fMult(x1,fac1),sc_fac1), acfWindow[LOFILT][3*lag]);  in FDKaacEnc_MergedAutoCorrelation()
770     tnsInfo->coef[subBlockNumber][HIFILT][i] = tnsInfo->coef[subBlockNumber][LOFILT][i] = 0;  in FDKaacEnc_TnsDetect()
773   tnsInfo->length[subBlockNumber][HIFILT] = tnsInfo->length[subBlockNumber][LOFILT] = 0;  in FDKaacEnc_TnsDetect()
774   tnsInfo->order [subBlockNumber][HIFILT] = tnsInfo->order [subBlockNumber][LOFILT] = 0;  in FDKaacEnc_TnsDetect()
825            (tC->confTab.filterEnabled[LOFILT]) && (tC->confTab.seperateFiltersAllowed) )  in FDKaacEnc_TnsDetect()
830         INT predGain = FDKaacEnc_AutoToParcor(rxx1, parcor_tmp, tC->confTab.tnsLimitOrder[LOFILT]);  in FDKaacEnc_TnsDetect()
835                 tnsInfo->coef[subBlockNumber][LOFILT],  in FDKaacEnc_TnsDetect()
836                 tC->confTab.tnsLimitOrder[LOFILT],  in FDKaacEnc_TnsDetect()
840         for (i = tC->confTab.tnsLimitOrder[LOFILT] - 1; i >= 0; i--) {  in FDKaacEnc_TnsDetect()
841           if (tnsInfo->coef[subBlockNumber][LOFILT][i] != 0) {  in FDKaacEnc_TnsDetect()
845         tnsInfo->order[subBlockNumber][LOFILT] = i + 1;  in FDKaacEnc_TnsDetect()
849 … sumSqrCoef += tnsInfo->coef[subBlockNumber][LOFILT][i] * tnsInfo->coef[subBlockNumber][LOFILT][i];  in FDKaacEnc_TnsDetect()
852         tnsInfo->direction[subBlockNumber][LOFILT] = tC->confTab.tnsFilterDirection[LOFILT];  in FDKaacEnc_TnsDetect()
853 …     tnsInfo->length[subBlockNumber][LOFILT] = tC->lpcStartBand[HIFILT] - tC->lpcStartBand[LOFILT];  in FDKaacEnc_TnsDetect()
856 …if ( ( (predGain > tC->confTab.threshOn[LOFILT]) && (predGain < (16000 * tC->confTab.tnsLimitOrder…  in FDKaacEnc_TnsDetect()
857           || ( (sumSqrCoef > 9)  && (sumSqrCoef < 22 * tC->confTab.tnsLimitOrder[LOFILT]) ) )  in FDKaacEnc_TnsDetect()
861           for (i = 0; i < tC->confTab.tnsLimitOrder[LOFILT]; i++) {  in FDKaacEnc_TnsDetect()
862 …oef += FDKabs(tnsInfo->coef[subBlockNumber][HIFILT][i] - tnsInfo->coef[subBlockNumber][LOFILT][i]);  in FDKaacEnc_TnsDetect()
865 …       (tnsInfo->direction[subBlockNumber][LOFILT] == tnsInfo->direction[subBlockNumber][HIFILT]) )  in FDKaacEnc_TnsDetect()
868             tnsInfo->length[subBlockNumber][HIFILT] = sfbCnt - tC->lpcStartBand[LOFILT];  in FDKaacEnc_TnsDetect()
1021     startLine = (tnsData->filtersMerged) ? tC->lpcStartLine[LOFILT] : tC->lpcStartLine[HIFILT];  in FDKaacEnc_TnsEncode()
1051         startLine = tC->lpcStartLine[LOFILT];  in FDKaacEnc_TnsEncode()