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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 1b02be42ef..b8c378ffda 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -11205,6 +11205,10 @@ Specify gamma. Lower gamma makes the spectrum more contrast, higher gamma makes the spectrum having more range. Acceptable value is [1.0, 7.0]. Default value is @code{3.0}. +@item gamma2 +Specify gamma of bargraph. Acceptable value is [1.0, 7.0]. +Default value is @code{1.0}. + @item fontfile Specify font file for use with freetype. If not specified, use embedded font. @@ -11295,6 +11299,12 @@ Custom fontcolor, C-note is colored green, others are colored blue fontcolor='if(mod(floor(midi(f)+0.5),12), 0x0000FF, g(1))' @end example +@item +Custom gamma, now spectrum is linear to the amplitude. +@example +gamma=2:gamma2=2 +@end example + @end itemize @section showspectrum |