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doc/filters: extend agate documentation
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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@ -732,36 +732,46 @@ Shorter signals than the chosen attack time will be left untouched.
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@table @option
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@item level_in
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Set input level before filtering.
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Default is 1. Allowed range is from 0.015625 to 64.
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@item range
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Set the level of gain reduction when the signal is below the threshold.
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Default is 0.06125. Allowed range is from 0 to 1.
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@item threshold
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If a signal rises above this level the gain reduction is released.
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Default is 0.125. Allowed range is from 0 to 1.
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@item ratio
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Set a ratio about which the signal is reduced.
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Default is 2. Allowed range is from 1 to 9000.
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@item attack
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Amount of milliseconds the signal has to rise above the threshold before gain
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reduction stops.
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Default is 20 milliseconds. Allowed range is from 0.01 to 9000.
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@item release
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Amount of milliseconds the signal has to fall below the threshold before the
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reduction is increased again.
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reduction is increased again. Default is 250 milliseconds.
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Allowed range is from 0.01 to 9000.
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@item makeup
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Set amount of amplification of signal after processing.
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Default is 1. Allowed range is from 1 to 64.
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@item knee
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Curve the sharp knee around the threshold to enter gain reduction more softly.
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Default is 2.828427125. Allowed range is from 1 to 8.
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@item detection
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Choose if exact signal should be taken for detection or an RMS like one.
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Default is peak. Can be peak or rms.
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@item link
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Choose if the average level between all channels or the louder channel affects
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the reduction.
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Default is average. Can be average or maximum.
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@end table
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@section alimiter
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