From d39f9feddc4c77f578f13cd8375b3860b730fa2b Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Mon, 30 May 2022 11:36:22 +0200 Subject: avfilter: add virtualbass filter --- doc/filters.texi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'doc') diff --git a/doc/filters.texi b/doc/filters.texi index d65e83d4d0..5abab5de18 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -6927,6 +6927,26 @@ Depth of modulation as a percentage. Range is 0.0 - 1.0. Default value is 0.5. @end table +@section virtualbass + +Apply audio Virtual Bass filter. + +This filter accepts stereo input and produce stereo with LFE (2.1) channels output. +The newly produced LFE channel have enhanced virtual bass originally obtained from both stereo channels. +This filter outputs front left and front right channels unchanged as available in stereo input. + +The filter accepts the following options: + +@table @option +@item cutoff +Set the virtual bass cutoff frequency. Default value is 250 Hz. +Allowed range is from 100 to 500 Hz. + +@item strength +Set the virtual bass strength. Allowed range is from 0.5 to 3. +Default value is 3. +@end table + @section volume Adjust the input audio volume. -- cgit v1.2.3