Modulation Delay

The Modulation Delay is based on the same principles as the Flanger and Chorus effects, but you can set the delay time, allowing both chorus and flanging effects to be generated. It can also be used without modulation to create resonator or doubling effects. The modulation section consists of two LFOs with variable frequencies.

Although rich, combined flanging and chorus effects are possible, the Modulation Delay is capable of producing some extreme modulation effects. These include emulations of tape speed fluctuations and metallic, robot-like modulations of incoming signals.

Figure. Modulation Delay window.
  • Feedback slider and field: Determines the amount of the effect signal that is routed back to the input. If you’re going for radical flanging effects, enter a high Feedback value. If simple doubling is what you’re after, don’t use any feedback. Negative values invert the phase of the feedback signal, resulting in more chaotic effects.
  • Flanger-Chorus knob and field: Sets the basic delay time. Set to the far left position to create flanger effects, to the center for chorus effects, and to the far right to hear clearly discernible delays.
  • De-Warble button: Ensures that the pitch of the modulated signal remains constant.
  • Const Mod. (Constant Modulation) button: Ensures that the modulation width remains constant, regardless of the modulation rate.

    Note: When Const Mod is enabled, higher modulation frequencies reduce the modulation width.

  • Mod. Intensity slider and field: Sets the modulation amount.
  • LFO Mix slider and fields: Determines the balance between the two LFOs.
  • LFO 1 and LFO 2 Rate knobs and fields: The left knob sets the modulation rate for the left stereo channel, and the right knob sets the modulation rate for the right stereo channel.

    In surround instances, the center channel is assigned the middle value of the left and right LFO Rate knobs. The other channels are assigned values between the left and right LFO rates.

    Note: The right LFO Rate knob is available only in stereo and surround instances, and it can be set separately only if the Left Right Link button is not enabled.

  • LFO Left Right Link button: Available only in stereo and surround instances, it links the modulation rates of the left and right stereo channels. Adjustment of either Rate knob will affect the other channels.
  • LFO Phase knob and field: Available only in stereo and surround instances, it controls the phase relationship between individual channel modulations.
    • At 0°, the extreme values of the modulation are achieved simultaneously for all channels.

    • 180° or −180° is equal to the greatest possible distance between the modulation phases of the channels.

    Note: The LFO Phase parameter is available only if the LFO Left Right Link button is active.

  • Volume Mod(ulation) slider and field: Determines the impact that LFO modulation has on the amplitude of the effect signal.
  • Output Mix slider and field: Determines the balance between dry and wet signals.
  • All Pass button (Extended Parameters area): Introduces an additional allpass filter into the signal path. An allpass filter shifts the phase angle of a signal, influencing its stereo image.
  • All Pass Left and All Pass Right sliders and fields (Extended Parameters area): Determines the frequency at which the phase shift crosses 90° (the half-way point of the total 180°) for each of the stereo channels. In surround instances, the other channels are automatically assigned values that fall between the two settings.