asoftclip

Apply audio soft clipping.

Soft clipping is a type of distortion effect where the amplitude of a signal is saturated along a smooth curve, rather than the abrupt shape of hard-clipping.

This filter accepts the following options:

'type'

Set type of soft-clipping.

It accepts the following values:

'tanh'

'atan'

'cubic'

'exp'

'alg'

'quintic'

'sin'

'param'

Set additional parameter which controls sigmoid function.