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-rw-r--r--doc/filters.texi8
1 files changed, 4 insertions, 4 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index ab58e53..9faed8e 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1072,14 +1072,14 @@ Apply arbitrary expressions to samples in frequency domain.
@table @option
@item real
Set frequency domain real expression for each separate channel separated
-by '|'. Default is "1".
+by '|'. Default is "re".
If the number of input channels is greater than the number of
expressions, the last specified expression is used for the remaining
output channels.
@item imag
Set frequency domain imaginary expression for each separate channel
-separated by '|'. If not set, @var{real} option is used.
+separated by '|'. Default is "im".
Each expression in @var{real} and @var{imag} can contain the following
constants and functions:
@@ -1104,10 +1104,10 @@ number of channels
current frame pts
@item re
-current real part of frequency bin
+current real part of frequency bin of current channel
@item im
-current imaginary part of frequency bin
+current imaginary part of frequency bin of current channel
@item real(b, ch)
Return the value of real part of frequency bin at location (@var{bin},@var{channel})
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