flangerΒΆ
Watch on youtube.comThis filter applies a flanging effect to the audio.
Each segment of the uploaded video was created with the following script:
#! /bin/sh
ffmpeg -hide_banner -y -filter_complex "
amovie=cdsg.wav
, flanger=
delay=0
:depth=2
:regen=0
:width=71
:shape=sinusoidal
:phase=25
:interp=linear
, aformat=sample_fmts=u8|s16:channel_layouts=stereo
, asplit=2[out1][a];
[a]channelsplit[a1][a2];
[a1]showcqt=s=1920x360,crop=1280:360:0,setsar=1[v1];
[a2]showcqt=s=1920x360,crop=1280:360:0,setsar=1,vflip[v2];
[v1][v2]vstack
, format=yuv420p
[out0]" -map '[out0]' -map '[out1]' out.mp4
(Note that I omitted shape and interp in the video.)
delay:
Set base delay in milliseconds. Range from 0 to 30. Default value is 0.
[me@host: ~]$ ffplay some.wav -af "flanger=delay=10"
depth:
Set added sweep delay in milliseconds. Range from 0 to 10. Default value is 2.
[me@host: ~]$ ffplay some.wav -af "flanger=depth=1"
regen:
Set percentage regeneration (delayed signal feedback). Range from -95 to 95. Default value is 0.
[me@host: ~]$ ffplay some.wav -af "flanger=regen=50"
width:
Set percentage of delayed signal mixed with original. Range from 0 to 100. Default value is 71.
[me@host: ~]$ ffplay some.wav -af "flanger=width=50"
speed:
Set sweeps per second (Hz). Range from 0.1 to 10. Default value is 0.5.
[me@host: ~]$ ffplay some.wav -af "flanger=speed=3"
shape:
Set swept wave shape, can be triangular or sinusoidal. Default value is sinusoidal.
[me@host: ~]$ ffplay some.wav -af "flanger=shape=triangular"
phase:
Set swept wave percentage-shift for multi channel. Range from 0 to 100. Default value is 25.
[me@host: ~]$ ffplay some.wav -af "flanger=phase=50"
interp:
Set delay-line interpolation, linear or quadratic. Default is linear.
[me@host: ~]$ ffplay some.wav -af "flanger=interp=quadratic"
- see also