Ring Modulation; Stereo Simulation - Kurzweil Flash Play PC4 Musician's Manual

Ring Modulation

Ring modulation multiplies two signals (the "carrier" and the "modulator") together to
produce unusual, often non-harmonic, overtones. The Ring Modulator effect in the PC4 has
two modes: "L*R" in which two mono signals are modulated together; and "Osc", in which
the input is stereo, and it is modulated with the sum of five waveforms that are generated
from oscillators within the effect itself. Four of these oscillators are sine waves, while one
(Oscillator 1) offers a selection of waveforms.
Wet/Dry. When the effect is in "L*R" mode, this controls how much of the left signal only is
passed dry (the right signal isn't passed dry at all).
Mod Mode selects between the two modes, L*R or Osc.
Osc1 Lvl is the level of Oscillator 1, from 0 to 100%.
Osc1 Freq is the frequency of Oscillator 1, from 16 to 25088 Hz.
Osc1 Shape is the waveshape of Oscillator 1, selectable from Sine, Saw+, Saw-, Pulse, and
Tri.
Osc1PlsWid (Pulse Width). When Osc1 Shape is set to Pulse, this sets the pulse width as
a percentage of the waveform period. When the width is set to 50%, the result is a square
wave. This parameter has no effect if other waveform types are chosen. Range is 0 to 100%.
Osc1Smooth smooths (removes the higher harmonics from) the Saw+, Saw-, and Pulse
waveforms. A Sawtooth wave becomes more like a triangle wave, and a Pulse wave becomes
more like a sine wave. Range is 0 to 100%.
The other four oscillators, Sine2 through Sine5, each have Lvl and Freq controls.

Stereo Simulation

The Mono to Stereo effect converts a monaural input to simulated stereo output.
In Select selects the input signal to be "stereo-ized." It can be Left, Right, or both: (L+R)/2.
CenterGain is the level of the summed left and right channels. Range is Off/-79.0 to 24.0
dB.
Diff Gain is the level of the difference signal produced, which is the spatial component of
the stereo signal. Range is Off/-79.0 to 24.0 dB.
DiffBassG controls the gain of a bass-shelf filter on the difference signal. By boosting the
low frequency components of the difference signal, you can increase the sense of acoustic
envelopment. Range is -79.0 to 24.0 dB.
DiffBassF is the transition frequency for the bass-shelf frequency. Range is 16 to 25088 Hz.
The processed signal is split into three frequency bands—Lo, Mid, and High—each of which
can be delayed and panned separately.
The Effects Chain Editor
Effects Parameters
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