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Logic Pro for iPad 3.3
Logic Pro for iPad 3.0
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Modulate Sculpture LFOs in Logic Pro for iPad

Two modulation targets can be assigned per LFO. An optional via modulation can also be assigned.

The LFOs also feature a simple envelope generator (the EG slider in each LFO section), which is used to control the time it takes for the LFO modulation to fade in or fade out. When either LFO EG slider is at a centered position, the modulation intensity is static—in other words, no fade-in or fade-out occurs.

Figure. LFO parameters.

LFO target parameters

  • Target 1/2 On/Off buttons: Turn each LFO on or off, independently.

  • Amount 1/2 knobs and fields: Move to set the modulation amount (when the incoming via signal is 0)— for example, when the modulation wheel is at its minimum position.

  • Target 1/2 pop-up menus: Choose the modulation targets.

  • Via Amount 1/2 knobs and fields: Set the maximum via modulation amount, such as when the Modulation wheel is at the maximum position, for example.

  • Via 1/2 pop-up menus: Choose (or turn off) the via sources that control the modulation scaling for each LFO.

Set the LFO modulation fade time in Sculpture

In Logic Pro, do the following in either Sculpture LFO:

  • To fade in the modulation: Set the EG slider to a positive value (above the center position).

    The higher the value, the longer the delay time.

  • To fade out the modulation: Set the EG slider to a negative value.

    The lower the slider position, the shorter the fade-out time.

Set up a delayed vibrato with an LFO in Sculpture

LFO envelopes are often used for delayed vibrato—many instrumentalists and singers intonate longer notes this way. Although Sculpture has a dedicated Vibrato LFO, only LFO 1 and LFO 2 provide a built-in envelope generator.

  1. In Logic Pro, set the LFO EG slider toward the top (delay) and choose pitch as the target.

  2. Set a slight modulation intensity.

  3. Select an LFO Rate of 5 Hz.

  4. Choose the triangular wave as the LFO waveform.

Tip: Chaotic and fast modulations of pitch by an LFO source—with a delayed Sample&Hold waveform, a high Rate, and short fade-out—are ideal for emulating the attack phase of brass instruments.

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