diff options
| author | Paul B Mahol <onemda@gmail.com> | 2022-05-27 09:36:19 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2022-05-27 09:39:53 +0200 |
| commit | 93b31dae1dec4c2b3e6c63a7e9f5b344b849126c (patch) | |
| tree | 36086558798e8dcf0919069d1e349583f224007c /libavfilter | |
| parent | f912cefb8343efc511aa72963b9f66e327ec0b88 (diff) | |
avfilter/af_biquads: fix low/highshelf 'k' calculation
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/af_biquads.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavfilter/af_biquads.c b/libavfilter/af_biquads.c index 0687bc31e9..26cb4d49bb 100644 --- a/libavfilter/af_biquads.c +++ b/libavfilter/af_biquads.c @@ -690,7 +690,7 @@ static void convert_dir2zdf(BiquadsContext *s, int sample_rate) case lowshelf: A = ff_exp10(s->gain / 40.); g = tan(M_PI * s->frequency / sample_rate) / sqrt(A); - k = 1. / (Q * A); + k = 1. / Q; a[0] = 1. / (1. + g * (g + k)); a[1] = g * a[0]; a[2] = g * a[1]; @@ -702,7 +702,7 @@ static void convert_dir2zdf(BiquadsContext *s, int sample_rate) case highshelf: A = ff_exp10(s->gain / 40.); g = tan(M_PI * s->frequency / sample_rate) / sqrt(A); - k = 1. / (Q * A); + k = 1. / Q; a[0] = 1. / (1. + g * (g + k)); a[1] = g * a[0]; a[2] = g * a[1]; |