flanger

Apply a flanging effect to the audio.

The filter accepts the following options:

'delay'

Set base delay in milliseconds. Range from 0 to 30. Default value is 0.

'depth'

Set added sweep delay in milliseconds. Range from 0 to 10. Default value is 2.

'regen'

Set percentage regeneration (delayed signal feedback). Range from -95 to 95. Default value is 0.

'width'

Set percentage of delayed signal mixed with original. Range from 0 to 100. Default value is 71.

'speed'

Set sweeps per second (Hz). Range from 0.1 to 10. Default value is 0.5.

'shape'

Set swept wave shape, can be triangular or sinusoidal. Default value is sinusoidal.

'phase'

Set swept wave percentage-shift for multi channel. Range from 0 to 100. Default value is 25.

'interp'

Set delay-line interpolation, linear or quadratic. Default is linear.