SirenAudio has released Wash – a new Max For Live audio effect that uses comb filters to create dense ‘washes of sound’ (akin to a watercolor wash). 

Parameters:

• del fb (delay feedback) : determines the amount of feedback, with higher values producing longer sustains.
• del time (delay time): changes the length of time of the delay.
  mod freq (modulation frequency): controls the frequency of the sine wave modulation oscillator.
• mod depth (modulation depth): changes the depth or amount of the modulation.
• jitter var (jitter variation): This modulation stage uses low pass filtered white noise, and the variation sets the cutoff frequency of the lowpass filter, with higher values producing more erratic variation.
• jitter depth: This parameter controls how much jitter is added to the delay time.
• low cut: attenuates low frequencies from the effect
• damping : attenuates high frequencies from the effect.
• dry wet : fades between the dry and effected audio signals.
  ef. gain (effect gain): scales the gain of the effect. This parameter is useful when the effect has high feedback settings as the volume can build up quickly.
• clear button : In between the final two parameters is a button that will clear audio from the delays.

Note that changing the delay time, jitter, and modulation parameters will affect the pitch of the effected audio.

Wash is a free download from the Max For Live site.