diff --git a/doc/filters.texi b/doc/filters.texi index 23d777d333..868f2aef13 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -792,6 +792,40 @@ Pass the audio source unchanged to the output. Pad the end of a audio stream with silence, this can be used together with -shortest to extend audio streams to the same length as the video stream. +@section aphaser +Add a phasing effect to the input audio. + +A phaser filter creates series of peaks and troughs in the frequency spectrum. +The position of the peaks and troughs are modulated so that they vary over time, creating a sweeping effect. + +A description of the accepted parameters follows. + +@table @option +@item in_gain +Set input gain. Default is 0.4. + +@item out_gain +Set output gain. Default is 0.74 + +@item delay +Set delay in milliseconds. Default is 3.0. + +@item decay +Set decay. Default is 0.4. + +@item speed +Set modulation speed in Hz. Default is 0.5. + +@item type +Set modulation type. Default is triangular. + +It accepts the following values: +@table @samp +@item triangular, t +@item sinusoidal, s +@end table +@end table + @anchor{aresample} @section aresample @@ -6725,40 +6759,6 @@ following one, the permission might not be received as expected in that following filter. Inserting a @ref{format} or @ref{aformat} filter before the perms/aperms filter can avoid this problem. -@section aphaser -Add a phasing effect to the input audio. - -A phaser filter creates series of peaks and troughs in the frequency spectrum. -The position of the peaks and troughs are modulated so that they vary over time, creating a sweeping effect. - -A description of the accepted parameters follows. - -@table @option -@item in_gain -Set input gain. Default is 0.4. - -@item out_gain -Set output gain. Default is 0.74 - -@item delay -Set delay in milliseconds. Default is 3.0. - -@item decay -Set decay. Default is 0.4. - -@item speed -Set modulation speed in Hz. Default is 0.5. - -@item type -Set modulation type. Default is triangular. - -It accepts the following values: -@table @samp -@item triangular, t -@item sinusoidal, s -@end table -@end table - @section aselect, select Select frames to pass in output.