10.6

Table Of Contents
220Logic Pro Instruments
To select the Digiwave numerically, Shift-click the Sine label, then type a value.
Use the Logic Pro ES2 noise generator
The sonic palette of oscillator3 is bolstered by the inclusion of a noise generator, which
can be activated by choosing the noise waveform. By default, the oscillator3 noise
generator generates white noise.
White noise is defined as a signal that consists of all frequencies (an infinite number)
sounding simultaneously, at the same intensity, in a given frequency band. The width of the
frequency band is measured in hertz. Sonically, white noise falls between the sound of the
consonant “ F” and breaking waves (surf). White noise is useful for synthesizing wind and
seashore noises, or electronic snare drum sounds.
You can also modulate the tonal color of the noise signal in real time—without using the
main filters of the ES2—by modulating the waveform of oscillator3.
Change the noise color
1. In Logic Pro, set up a modulation routing as follows:modulation target Osc3Wave,
source ModWhl. The modulation amount slider behaves somewhat differently with this
routing, essentially acting like a filter.
2. Use negative modulation amount values (not −1.000) to set a descending filter slope
that roughly equates to 6dB/octave. The sound becomes darker (red noise) as you
adjust the mod wheel downwards.
3. To tune this pseudo filter down to 18Hz, set the modulation amount to −1.000. When
Osc3Wave is modulated positively, the noise becomes brighter (blue noise).
4. If you choose a modulation amount value of +1.000 for the Osc3Wave modulation
target, the filter cutoff frequency is set to 18kHz.
Detune analog oscillators in Logic Pro ES2
The Analog parameter randomly alters the pitch of each note and the filter cutoff
frequency.
Low Analog values can add a subtle richness to the sound.
Medium Analog values simulate the tuning instabilities of analog synthesizer circuitry,
which can be useful in achieving that much sought-after “warmth” of analog hardware
synthesizers.
High Analog values result in significant pitch instability, which can sound truly out of
tune—but this may be perfect for your needs.