Effects and Effect Mode
Effects Overview
9-25
Pitcher
Pitcher applies a filter to the input signal which has a series of peaks in the frequency response.
These
peaks are normally adjusted so that their frequencies are all multiples of a specific,
selectable frequency, which imposes a strong sense of pitch at the selected fundamental
frequency.
Pitch
. The fundamental pitch imposed upon the input, in MIDI note numbers from C-1 to G9.
Ptch Offst
is an offset from the pitch frequency in semitones, from -12.0 to 12.0. It can be useful to
assign pitch bend, a ribbon, or another continuous controller to this parameter through a MOD.
Odd Wts
,
Pair Wts
,
Quartr Wts
,
Half Wts
are parameters that control the shape of the frequency
response of Pitcher. An exact description of what each one does is, unfortunately, impossible,
since there is a great deal of interaction between them. For more information and examples, see
the
KSP8 Algorithm Reference Guide
available as a free download at www.kurzweil.com.
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 PC3A 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.
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.