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-rw-r--r--libavcodec/celp_filters.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/celp_filters.c b/libavcodec/celp_filters.c
index 6d235184dd..cd475533a5 100644
--- a/libavcodec/celp_filters.c
+++ b/libavcodec/celp_filters.c
@@ -110,6 +110,6 @@ void ff_celp_lp_zero_synthesis_filterf(float *out,
for (n = 0; n < buffer_length; n++) {
out[n] = in[n];
for (i = 1; i < filter_length; i++)
- out[n] -= filter_coeffs[i-1] * in[n-i];
+ out[n] += filter_coeffs[i-1] * in[n-i];
}
}