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authorPaul B Mahol <onemda@gmail.com>2022-05-09 21:59:03 +0200
committerPaul B Mahol <onemda@gmail.com>2022-05-09 22:21:40 +0200
commit5ccd8f492bc807dbf084bf13f3f288b2f4ac41f1 (patch)
treed39f83bb48bbd5605df91e35288c3bbf79652798 /doc/filters.texi
parent1309867022a5edf74e80ee6114049d7d053296fc (diff)
avfilter/af_crossfeed: add option for linear phase filtering
But at expense of additional delay.
Diffstat (limited to 'doc/filters.texi')
-rw-r--r--doc/filters.texi7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index 468c277798..22a88d7f58 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4205,6 +4205,13 @@ Set input gain. Default is 0.9.
@item level_out
Set output gain. Default is 1.
+
+@item block_size
+Set block size used for reverse IIR processing. If this value is set to high enough
+value (higher than impulse response length truncated when reaches near zero values) filtering
+will become linear phase otherwise if not big enough it will just produce nasty artifacts.
+
+Note that filter delay will be exactly this many samples when set to non-zero value.
@end table
@subsection Commands