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libavfilter/af_biquads: add shorter option for width_type

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
2017-06-18 17:31:03 +02:00
parent 8a09325311
commit a23a56e77c
2 changed files with 18 additions and 10 deletions
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20
doc/filters.texi
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@@ -1074,7 +1074,7 @@ The filter accepts the following options:
@item frequency, f
Set frequency in Hz.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -1809,7 +1809,7 @@ Set the filter's central frequency. Default is @code{3000}.
@item csg
Constant skirt gain if set to 1. Defaults to 0.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -1841,7 +1841,7 @@ The filter accepts the following options:
@item frequency, f
Set the filter's central frequency. Default is @code{3000}.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -1880,7 +1880,7 @@ Set the filter's central frequency and so can be used
to extend or reduce the frequency range to be boosted or cut.
The default value is @code{100} Hz.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -2498,7 +2498,7 @@ The filter accepts the following options:
@item frequency, f
Set the filter's central frequency in Hz.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -2527,13 +2527,13 @@ Specify which channels to filter, by default all available are filtered.
@item
Attenuate 10 dB at 1000 Hz, with a bandwidth of 200 Hz:
@example
equalizer=f=1000:width_type=h:width=200:g=-10
equalizer=f=1000:t=h:width=200:g=-10
@end example
@item
Apply 2 dB gain at 1000 Hz with Q 1 and attenuate 5 dB at 100 Hz with Q 2:
@example
equalizer=f=1000:width_type=q:width=1:g=2,equalizer=f=100:width_type=q:width=2:g=-5
equalizer=f=1000:t=q:w=1:g=2,equalizer=f=100:t=q:w=2:g=-5
@end example
@end itemize
@@ -2847,7 +2847,7 @@ Set frequency in Hz. Default is 3000.
@item poles, p
Set number of poles. Default is 2.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -3134,7 +3134,7 @@ Set frequency in Hz. Default is 500.
@item poles, p
Set number of poles. Default is 2.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h
@@ -3890,7 +3890,7 @@ Set the filter's central frequency and so can be used
to extend or reduce the frequency range to be boosted or cut.
The default value is @code{3000} Hz.
@item width_type
@item width_type, t
Set method to specify band-width of filter.
@table @option
@item h