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avfilter/af_aiir: add polar zeros/poles format variant

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
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Paul B Mahol 2018-01-10 20:25:50 +01:00
parent de5b12c93f
commit de8a1d8d4d
2 changed files with 83 additions and 10 deletions
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15
doc/filters.texi
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@ -1084,8 +1084,17 @@ Set output gain.
@item f
Set coefficients format.
Can be @code{tf} - transfer function or @code{zp} - Z-plane zeros/poles.
Default is @code{zp}.
@table @samp
@item tf
transfer function
@item zp
Z-plane zeros/poles, cartesian (default)
@item zpr
Z-plane zeros/poles, polar radians
@item zpd
Z-plane zeros/poles, polar degrees
@end table
@item r
Set kind of processing.
@ -1094,7 +1103,7 @@ Can be @code{d} - direct or @code{s} - serial cascading. Defauls is @code{s}.
@item e
Set filtering precision.
@table @option
@table @samp
@item dbl
double-precision floating-point (default)
@item flt