10.6

609Logic Pro Instruments
5. Change the Mod amount (the blue slider) of Osc1 Pitch again (see step 2).
The interaction of this parameter with the envelope decay time provides numerous
possibilities for shaping the kick or punch of the bass drum sound.
Note: This simple bass drum sound is listed as Kick 1 in the Tutorial Kit, at a pitch of C1.
Reduce kick drum tonality using the 2 Band EQ
One advantage of bass drums based on sine waves is that their sound can be precisely
tuned to match the song. The disadvantage is that a recognizable pitch is not always
desirable. Ultrabeat offers several methods to reduce the tonality of the sound. A very
effective tool is the 2 Band EQ.
1. In Logic Pro, for band1, select the Shelving mode at a frequency of about 80Hz, a high
Qvalue, and a negative Gain value.
2. For band2, select the Peak mode at a frequency of around 180Hz, a medium Qvalue,
and also a negative Gain value.
On the EQgraph, notice how the frequencies around 80Hz are boosted, while the
surrounding frequencies are reduced.
3. Vary the frequency of band2 (easily recognizable in the blue part of the EQgraph) to
influence the extent of bass drum tonality.
Reduce kick drum tonality with a lowpass filter
A further method for reducing the tonality of a drum sound that is rich with overtones is to
use a lowpass filter. In this example, you will control the cutoff frequency of the filter with
an envelope.
1. In Logic Pro, reload the Standard Tutorial sound, choose A#0 as the basic pitch in
oscillator1, and modulate it with Env1.
2. Increase the Saturation parameter value to enhance the overtones of the drum sound.
Note that the output of Osc1 is directed to the filter, because the filter bypass button
(the arrow between Osc1 and the filter) is activated.
3. Set Filter type to LP 24.
4. Set Cutoff value to 0.10.
5. Set Mod Source for Cut to Env3.
6. Set Mod Amount for Cut to 0.60.