[FFmpeg-devel] [PATCH] doc/filters/equalizer: add examples for equalizer

Werner Robitza werner.robitza at gmail.com
Thu Jan 2 20:17:56 CET 2014


Add two examples on the usage of the equalizer filter.
---
 doc/filters.texi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index a579964..c896edb 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1395,6 +1395,21 @@ Set the required gain or attenuation in dB.
 Beware of clipping when using a positive gain.
 @end table
 
+ at subsection Examples
+ at itemize
+ at item
+Attenuate 10 dB at 1000 Hz, with a bandwidth of 200 Hz:
+ at example
+equalizer=f=1000:width_type=h:width=200:g=-10
+ at end example
+
+ at item
+Apply 2 dB gain at 1000 Hz with Q 1 and attenuate 5 dB at 100 Hz with Q 2:
+ at example
+equalizer=f=1000:width_type=q:width=1:g=2,equalizer=f=100:width_type=q:width=2:g=-5
+ at end example
+ at end itemize
+
 @section highpass
 
 Apply a high-pass filter with 3dB point frequency.
-- 
1.8.5.2



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