9
Table Of Contents
- Logic Express 9 Effects
- Contents
- An Introduction to the Logic Express Effects
- Amps and Pedals
- Amp Designer
- Choosing an Amp Designer Model
- Tweed Combos
- Classic American Combos
- British Stacks
- British Combos
- British Alternatives
- Metal Stacks
- Additional Combos
- Building a Customized Amp Designer Combo
- Choosing an Amp Designer Amplifier
- Choosing an Amp Designer Cabinet
- Amp Designer Cabinet Reference Table
- Using Amp Designer’s Equalizer
- Amp Designer Equalizer Type Reference Table
- Using Amp Designer’s Gain, Presence, and Master Controls
- Getting to Know Amp Designer’s Effects Parameters
- Using Amp Designer’s Reverb Effect
- Amp Designer Reverb Type Reference Table
- Using Amp Designer’s Tremolo and Vibrato Effects
- Setting Amp Designer Microphone Parameters
- Setting Amp Designer’s Output Level
- Bass Amp
- Guitar Amp Pro
- Building Your Guitar Amp Pro Model
- Choosing a Guitar Amp Pro Amplifier
- Choosing a Guitar Amp Pro Speaker Cabinet
- Choosing a Guitar Amp Pro Equalizer
- Using Guitar Amp Pro’s Gain, Tone, Presence, and Master Controls
- Getting to Know Guitar Amp Pro’s Effects Section
- Using Guitar Amp Pro’s Tremolo and Vibrato Effects
- Using Guitar Amp Pro’s Reverb Effect
- Setting Guitar Amp Pro Microphone Parameters
- Setting the Guitar Amp Pro Output Level
- Pedalboard
- Amp Designer
- Delay Effects
- Distortion Effects
- Dynamics Processors
- Equalizers
- Filter Effects
- AutoFilter
- EVOC 20 Filterbank
- EVOC 20 TrackOscillator
- What Is a Vocoder?
- How Does a Vocoder Work?
- Getting to Know the EVOC 20 TrackOscillator Interface
- EVOC 20 TrackOscillator Analysis In Parameters
- Using EVOC 20 TrackOscillator Analysis In Parameters
- EVOC 20 TrackOscillator U/V Detection Parameters
- EVOC 20 TrackOscillator Synthesis In Parameters
- Basic Tracking Oscillator Parameters
- Tracking Oscillator Pitch Correction Parameters
- Quantizing the Pitch of the Tracking Oscillator
- EVOC 20 TrackOscillator Formant Filter Parameters
- Using Formant Stretch and Formant Shift
- EVOC 20 TrackOscillator Modulation Parameters
- EVOC 20 TrackOscillator Output Parameters
- Fuzz-Wah
- Spectral Gate
- Imaging Processors
- Metering Tools
- Modulation Effects
- Pitch Effects
- Reverb Effects
- Specialized Effects and Utilities
- Utilities and Tools
Filters are used to emphasize or suppress frequencies in an audio signal, resulting in a
change to the tonal color of the audio.
Logic Express contains a variety of advanced filter-based effects that you can use to
creatively modify your audio. These effects are most often used to radically alter the
frequency spectrum of a sound or mix.
Note: Equalizers (EQs) are special types of filters. Typically, they are not used as “effects”
per-se, but as tools to refine the frequency spectrum of a sound or mix. See Equalizers.
This chapter covers the following:
• AutoFilter (p. 97)
• EVOC 20 Filterbank (p. 103)
• EVOC 20 TrackOscillator (p. 107)
• Fuzz-Wah (p. 119)
• Spectral Gate (p. 123)
AutoFilter
The AutoFilter is a versatile filter effect with several unique features. You can use it to
create classic, analog-style synthesizer effects, or as a tool for creative sound design.
The effect works by analyzing incoming signal levels through use of a threshold parameter.
Any signal level that exceeds the threshold is used as a trigger for a synthesizer-style
ADSR envelope or an LFO (low frequency oscillator). These control sources are used to
dynamically modulate the filter cutoff.
The AutoFilter allows you to choose between different filter types and slopes, control the
amount of resonance, add distortion for more aggressive sounds, and mix the original,
dry signal with the processed signal.
97
Filter Effects
6