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-rw-r--r--libAACenc/src/aacenc_tns.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/libAACenc/src/aacenc_tns.cpp b/libAACenc/src/aacenc_tns.cpp
index 5fcd309..3026d69 100644
--- a/libAACenc/src/aacenc_tns.cpp
+++ b/libAACenc/src/aacenc_tns.cpp
@@ -1147,6 +1147,9 @@ 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;