diff options
Diffstat (limited to 'libAACenc/src/aacenc_tns.cpp')
| -rw-r--r-- | libAACenc/src/aacenc_tns.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libAACenc/src/aacenc_tns.cpp b/libAACenc/src/aacenc_tns.cpp index d0ff6ac..f036518 100644 --- a/libAACenc/src/aacenc_tns.cpp +++ b/libAACenc/src/aacenc_tns.cpp @@ -409,7 +409,7 @@ AAC_ENCODER_ERROR FDKaacEnc_InitTnsConfiguration(INT bitRate, case 960: case 1024: /* TNS start line: skip lower MDCT lines to prevent artifacts due to filter mismatch */ - tC->lpcStartBand[LOFILT] = (blockType == SHORT_WINDOW) ? 0 : ((sampleRate < 18783) ? 4 : 8); + tC->lpcStartBand[LOFILT] = (blockType == SHORT_WINDOW) ? 0 : ((sampleRate <= 8000) ? 2 : ((sampleRate < 18783) ? 4 : 8)); tC->lpcStartLine[LOFILT] = pC->sfbOffset[tC->lpcStartBand[LOFILT]]; i = tC->lpcStopBand; @@ -1168,6 +1168,9 @@ static INT FDKaacEnc_AutoToParcor( workBuffer++; } + if (input[0] == 0) + input[0] = 1; + tmp = fMult((FIXP_DBL)((LONG)TNS_PREDGAIN_SCALE<<21), fDivNorm(fAbs(autoCorr_0), fAbs(input[0]), &scale)); if ( fMultDiv2(autoCorr_0, input[0])<FL2FXCONST_DBL(0.0f) ) { tmp = -tmp; |