Mono.Effectval compand_mu_law : float -> t -> int -> int -> unitA compander following the mu-law (see http://en.wikipedia.org/wiki/Mu-law).
class type  t = object ... endclass biquad_filter : int -> [ `Band_pass
          | `High_pass
          | `Low_pass
          | `Notch
          | `All_pass
          | `Peaking
          | `Low_shelf
          | `High_shelf ] -> ?gain:float -> float -> float -> tmodule ADSR : sig ... endADSR (Attack/Decay/Sustain/Release) envelopes.