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| author | Paul B Mahol <onemda@gmail.com> | 2020-04-30 11:44:48 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2020-04-30 12:18:36 +0200 |
| commit | 0ec61fcff71d212b616660a6e93d856ef1849466 (patch) | |
| tree | d375ea1f6d230ca3ca3f4c9aa156726f40c8f411 | |
| parent | c7d8082357965bfd02bc3a8ba6867b36119d2895 (diff) | |
| download | ffmpeg-0ec61fcff71d212b616660a6e93d856ef1849466.tar.gz | |
avfilter/af_crossfeed: fix calculation of alpha parameter
Use A in calculation.
| -rw-r--r-- | libavfilter/af_crossfeed.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/af_crossfeed.c b/libavfilter/af_crossfeed.c index c819ca59a7..f1bbb357ba 100644 --- a/libavfilter/af_crossfeed.c +++ b/libavfilter/af_crossfeed.c @@ -62,7 +62,7 @@ static int config_input(AVFilterLink *inlink) double w0 = 2 * M_PI * (1. - s->range) * 2100 / inlink->sample_rate; double alpha; - alpha = sin(w0) / 2 * sqrt(2 * (1 / 0.5 - 1) + 2); + alpha = sin(w0) / 2 * sqrt((A + 1 / A) * (1 / 0.5 - 1) + 2); s->a0 = (A + 1) + (A - 1) * cos(w0) + 2 * sqrt(A) * alpha; s->a1 = -2 * ((A - 1) + (A + 1) * cos(w0)); |