avfilter/af_crystalizer: improve filter description

diff --git a/doc/filters.texi b/doc/filters.texi
index b831b2d18e1b14bdfa0181764985c1b77568a340..2589ff4349651267da2cc699bb68904319d2d4c5 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -3682,7 +3682,9 @@ Set output gain. Default is 1.
 This filter supports the all above options as @ref{commands}.
 
 @section crystalizer
-Simple algorithm to expand audio dynamic range.
+Simple algorithm for audio noise sharpening.
+
+This filter linearly increases differences betweeen each audio sample.
 
 The filter accepts the following options:
 

diff --git a/libavfilter/af_crystalizer.c b/libavfilter/af_crystalizer.c
index f3d8ae69918f4991697ade51cf8c3197ba2d402d..778357f9b7aeae7cad6939741b93e362b7619fe7 100644 (file)
--- a/libavfilter/af_crystalizer.c
+++ b/libavfilter/af_crystalizer.c
@@ -305,7 +305,7 @@ static const AVFilterPad outputs[] = {
 
 AVFilter ff_af_crystalizer = {
     .name           = "crystalizer",
-    .description    = NULL_IF_CONFIG_SMALL("Simple expand audio dynamic range filter."),
+    .description    = NULL_IF_CONFIG_SMALL("Simple audio noise sharpening filter."),
     .query_formats  = query_formats,
     .priv_size      = sizeof(CrystalizerContext),
     .priv_class     = &crystalizer_class,