Filter anlmdn
  Reduce broadband noise from stream using Non-Local Means.
    slice threading supported
    Inputs:
       #0: default (audio)
    Outputs:
       #0: default (audio)
anlmdn AVOptions:
  s                 <float>      ..F.A.... set denoising strength (from 1e-005 to 10) (default 1e-005)
  p                 <duration>   ..F.A.... set patch duration (default 0.002)
  r                 <duration>   ..F.A.... set research duration (default 0.006)
  o                 <int>        ..F.A.... set output mode (from 0 to 2) (default o)
     i               0            ..F.A.... input
     o               1            ..F.A.... output
     n               2            ..F.A.... noise
  m                 <float>      ..F.A.... set smooth factor (from 1 to 15) (default 11)

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

