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| author | Thomas Zander <thomas.e.zander@googlemail.com> | 2017-06-29 20:43:33 +0200 |
|---|---|---|
| committer | Erik de Castro Lopo <erikd@mega-nerd.com> | 2017-07-01 15:43:46 +1000 |
| commit | 68c5886db9dfbc3ea938a0eb3a02fbb21643d9b5 (patch) | |
| tree | a41951a544025cb0406759508c5b16c08d8f783c | |
| parent | 1b5c09e4c692e243239945be3cba3ec72ea1699f (diff) | |
| download | flac-68c5886db9dfbc3ea938a0eb3a02fbb21643d9b5.tar.gz | |
Correct flattop window coefficients
The window amplitude is now normalised to 1.0.
Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
| -rw-r--r-- | src/libFLAC/window.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libFLAC/window.c b/src/libFLAC/window.c index e977fd86..76983286 100644 --- a/src/libFLAC/window.c +++ b/src/libFLAC/window.c @@ -109,7 +109,7 @@ void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L) FLAC__int32 n; for (n = 0; n < L; n++) - window[n] = (FLAC__real)(1.0f - 1.93f * cos(2.0f * M_PI * n / N) + 1.29f * cos(4.0f * M_PI * n / N) - 0.388f * cos(6.0f * M_PI * n / N) + 0.0322f * cos(8.0f * M_PI * n / N)); + window[n] = (FLAC__real)(0.21557895f - 0.41663158f * cos(2.0f * M_PI * n / N) + 0.277263158f * cos(4.0f * M_PI * n / N) - 0.083578947f * cos(6.0f * M_PI * n / N) + 0.006947368f * cos(8.0f * M_PI * n / N)); } void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev) |