10.6

533Logic Pro Instruments
3. Choose Disturb from the Object2 Type pop-up menu.
Tip: In the Disturb model, the Timbre parameter determines how far the string
is deflected from its resting position by the obstacle. Positive values precipitate no
deflection of the vibration from its resting position. Variation defines the length of the
string section that is disturbed—positive values correspond to a longer section of string,
negative values to a correspondingly shorter section of string.
4. Adjust Object2 parameters to the following values:Strength 0.14, Timbre −0.05,
Variation −1.00.
5. Drag the Object2 slider, which remains at the far right in the Pickup display, to see
its value of 0.99. You’ll note that the range between C2 and C3 already sounds quite
acceptable, but the buzzing in the lower notes is still too strong. It is somewhat sitar-
like, so keep this disturb model in mind when it comes to creating a home-spun sitar.
6. Try different settings for the Strength parameter for both the higher and lower playing
ranges. You’ll see that, at best, only a compromise is possible. The buzzing is either too
loud in the low range or not present enough in the high range.
Obviously, the effect needs to be scaled over the relevant tonal range. Unlike the
parameters for the string, Objects1 to 3 don’t have a directly addressable key scaling
function. There’s a clever way around this:Both LFOs offer a key scaling function. As
you probably don’t want the buzzing to be modulated by a periodic oscillation, you need
to reduce the LFO speed to infinitely slow or 0. In this way, you can deactivate the LFO
itself, but still use its modulation matrix.
7. Activate LFO2 by clicking the LFO2 button at the bottom left, and set the Rate knob to a
value of 0.00Hz.
8. Click the 1button (next to the RateMod slider, to the upper right) to activate the first
modulation target.
9. Choose Object2 Strength from the Target pop-up menu.
10. Choose KeyScale from the via pop-up menu.
11. Drag the amt slider to the right while you are playing. You can hear that the singing
buzzing fades out in the lower range, while gradually being retained as you move toward
C3. Drag the slider to a value of 0.15. The buzzing is now far more moderate in the low
range.
12. Switch Object3 back on. Set Timbre to its minimum value (−1.00) and Variation to its
maximum value (1.00). Object3 should be positioned all the way to the right, at a value
of 1.00.
13. Vary the Object3 Strength parameter. You’ll discover that the overtone content of the
buzzing can be controlled very effectively. A Strength value of 0.25 is recommended
here.
14. Save this setting as Fretless Roundwound#1.