diff options
Diffstat (limited to 'libavcodec/lpc.c')
| -rw-r--r-- | libavcodec/lpc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/lpc.c b/libavcodec/lpc.c index 3839119cc2..052aeaa191 100644 --- a/libavcodec/lpc.c +++ b/libavcodec/lpc.c @@ -176,9 +176,10 @@ double ff_lpc_calc_ref_coefs_f(LPCContext *s, const float *samples, int len, const double a = 0.5f, b = 1.0f - a; /* Apply windowing */ - for (i = 0; i < len; i++) { + for (i = 0; i <= len / 2; i++) { double weight = a - b*cos((2*M_PI*i)/(len - 1)); s->windowed_samples[i] = weight*samples[i]; + s->windowed_samples[len-1-i] = weight*samples[len-1-i]; } s->lpc_compute_autocorr(s->windowed_samples, len, order, autoc); |