avfilter: add amultiply audio filter

1 files changed, 9 insertions, 0 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index 860d1eadca..e3ae0b01f0 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1488,6 +1488,15 @@ Specify weight of each input audio stream as sequence.
 Each weight is separated by space. By default all inputs have same weight.
 @end table
 
+@section amultiply
+
+Multiply first audio stream with second audio stream and store result
+in output audio stream. Multiplication is done by multiplying each
+sample from first stream with sample at same position from second stream.
+
+With this element-wise multiplication one can create amplitude fades and
+amplitude modulations.
+
 @section anequalizer
 
 High-order parametric multiband equalizer for each channel.