10.6

49Logic Pro Instruments
• High Pass: Emulates a two-pole highpass filter that gently reduces the levels
of lower frequencies. The Shift knob sets the cutoff frequency. The Size knob
changes the filter slope.
• Low Pass: Emulates a two-pole lowpass filter that gently reduces the levels of
higher frequencies. The Shift knob sets the cutoff frequency. The Size knob
changes the filter slope.
• Notch: A filter that attenuates a narrow band of frequencies near the set
frequency. The frequency band can be moved up or down the frequency
spectrum with the Shift knob. The Size knob sets the width of the band (notch).
• Peak: A filter that boosts a narrow band of frequencies around the set frequency.
The frequency band can be moved up or down the frequency spectrum with the
Shift knob. The Size knob sets the width of the band.
• Vowel Bright, Classic, and Smooth filters: Bright vowel sounds contain more high
frequency content and are the most aggressive-sounding. Classic vowel sounds are
warmer, and are similar to synthesizer vowel sound filtering. Smooth variants are
more natural-sounding vowel shapes with a gentler filter slope.
Tip: Most of the “vowel” filters are not strictly designed to create that exact
vowel. Each Bright, Classic, and Smooth vowel filter is more of a unique variation on
that general sound, with not only brightness differences, but also overall character
differences. Additionally, any vowel filter can be independently modulated, alone or
in conjunction with Select knob morphing between filters (even from mismatched
sets). Use these facilities to dramatically expand your filtering options.
• Vowel A: Mimics a set of vocal chords to impose an “a” vowel sound on the audio.
Each variation of this complex filter shape has prominent peaks at different
frequencies. It is, generally speaking, an open-sounding filter.
• Vowel E: Mimics a set of vocal chords to impose an “e” vowel sound on the audio.
Each variation of this complex filter shape has prominent peaks at different
frequencies. It is, generally speaking, an open-sounding filter.
• Vowel I: Mimics a set of vocal chords to impose an “i” vowel sound on the audio.
Each variation of this filter shape has prominent upper midrange peaks and a
further low-mid peak, making this filter sound thinner and less open than the “a”
and “e” vowel filters.
• Vowel O: Mimics a set of vocal chords to impose an “o” vowel sound on the audio.
This filter shape has gentler midrange and upper midrange peaks with a dominant
low-mid resonance. The result is a rounder sound with less brightness and
presence than the vowel types above.
• Vowel U: Mimics a set of vocal chords to impose a “u” vowel sound on the
audio. This filter shape has gentler midrange and upper midrange peaks with a
prominent low-mid resonance. The “u” filter variants also emphasize higher-range
content around 7 and 8 KHz, for example, making them sound thinner than the
“o” filter.