Modulation-based Effects Flashcards
(18 cards)
What is modulation?
When an LFO is applied to a signal.
What is an LFO?
Low frequency oscillator, assigned to features (volume, pitch, etc) in order to create modulation.
What does an LFO modulate for a wah effect?
Filter cutoff.
What does an LFO modulate for a tremolo effect?
Volume.
What does an LFO modulate for a vibrato effect?
Pitch.
What is phasing?
Adding an amount of offset to a wave and interfering it with another wave.
What are the rough delay times for chorus and flange?
Chorus: 5-35ms.
Flange: 1-5ms.
How does a rotary speaker cabinet work?
An electric motor rotates both horn speakers and a bass cylinder at a constant speed.
What does chorus sound like?
Shimmering, full and ambient.
Example: Come as you are - Nirvana.
What does flange sound like?
Sweeping, metallic exaggerated resonance, ‘jet plane effect’.
Example: Barracuda - Heart.
What does phase sound like?
Gentler sweeping effect than flanger.
Example: Endors toi - Tame Impala.
What are the main parameters for modulation-based effects?
- Frequency / LFO rate.
- Depth.
- Feedback.
- Dry / Wet mix.
- Delay offset.
What are some of the main guitar pedal effects?
- Dynamic (compressor, EQ).
- Pitch (octave, harmoniser).
- Drive (overdrive, distortion).
- Delay / echo.
- Reverb.
- Wah.
How does the feedback control affect flange?
Some of effected signal is fed back though, when set high it will create a ‘whooshing’ effect.
When and how were modulation based effects created?
1960s. Used to synchronised tape recorders, one being slightly delayed, used to thicken vocal tracks.
What can the rotary effect be used for?
Combination of chorus, vibrato and tremolo. Used to emulate phaser effect.
What is the order of guitar pedals?
Tuner, wah, compressors, distortion, EQ, modulation, delay, reverb, loop.
What is the difference between singlecoil and humbucker pickups?
Singlecoil - brighter / twangy sound, more susceptible to noise.
Humbucker - fuller / fatter sound, reduced noise.
