Filter aphaseshift
  Apply phase shifting to input audio.
    slice threading supported
    Inputs:
       #0: default (audio)
    Outputs:
       #0: default (audio)
aphaseshift AVOptions:
  shift             <double>     ..F.A....T set phase shift (from -1 to 1) (default 0)

This filter has support for timeline through the 'enable' option.

