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SPX2000—Owner’s Manual 47
Modulation
Modulation
These effects modulate the input signal in various ways. Using one signal to vary another signal is called “modulation.” The
signal that is being varied is called the “carrier,” and the signal that is creating the modulation is called the “modulator.” Mod-
ulation-type effects can vary the volume, the pitch, or the delay time of the effect sound to produce “swooshing” or “twisting”
sounds (flanger, phaser) or cyclic changes in volume (tremolo) or position (auto pan). The SPX2000 can use the signal of an
oscillator as the modulator to apply cyclic change, or use the input signal itself or MIDI messages to apply change.
Flanger (PRESET bank)
These effects add a “swooshing” character that is reminiscent of a jet
airplane taking off and landing.
For delay-type effects, the delay time relative to the original sound does
not change; however for a flanger, the delay time is modulated cycli-
cally. It is this change in the delay time that produces the “swooshing”
character of a flanger.
Each aspect of the sound is controlled by the following effect parame-
ters.
Modulation signal: FREQ., DEPTH, WAVE
Effect sound: MOD.DLY, FB.GAIN
Tempo synchronization: SYNC, NOTE, TEMPO
Filter/equalizer: LSH G, LSH F, EQ G, EQ F, EQ Q, HSH G, HSH F
Output level: OUT LVL, MIX BAL.
Parameter details
■Basic parameters
Type Bank
No. of
INs/OUTs
Modulation effect Modulator signal Page
Flanger
PRESET
2IN/2OUT
Twisting
Oscillator signal
47
Phaser 49
Stereo Flanger/Stereo Phasing CLASSIC 50
Chorus
PRESET
Chorus
51
Symphonic 52
Tremolo Volume change
53
54
CLASSIC
Chorus
CLASSIC
Chorus
Symphonic Symphonic 54
Auto Pan PRESET
Positional change
55
Pan CLASSIC 56
Modulation Filter
PRESET Twisting
56
Ring Modulation 57
Dynamic Filter
Input signal or
MIDI message
58
Dynamic Flanger 59
Dynamic Phaser 60
Parameter name Range Explanation
FREQ. 0.05—40.00 Hz
Speed of modulation. Increasing this value will make the modulation repeat at a shorter interval.
DEPTH 0—100%
Modulation depth. Increasing this value will make the modulation deeper.
MOD.DLY 0.0—500.0 ms
Delay of the effect sound relative to the original sound. The delay time will be modulated around
this value. FREQ. sets the speed of this change, and DEPTH sets the depth.
FB.GAIN –99%—+99%
Amount of feedback for the modulated sound. Raising this value will increase the amount of feed-
back, emphasizing the modulation. Negative (–) settings will invert the phase of the feedback.
WAVE Sine, Tri
Waveform of the modulation signal. This will affect the character of the modulation.
You can choose Sine (sine wave) or Tri (triangle wave).
MOD. DLY
DEPTH
L(R) R(L)
Level
Time
Original sound