Kurzweil KDFX, Manual

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Using the Algorithms
Pitcher
5-14
LFO Shape is the waveform type for the LFO. Choices are Sine, Saw+, Saw-, Pulse, and Tri.
LFO PlsWid or Pulse Width . When the LFO 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%.
AutoPan
Origin determines the axis for the panning motion. At 0%, the panning is centered between the
speakers. Positive values shift the axis to the right, while negative values shift it to the left. At
-100% or +100% (the range limits), there is no panning action.
ImageWidth is the width of the original input program material before it is auto-panned. At 0%
(minimum), the input image is shrunk to a single point source, allowing maximum panning
excursion. At 100% (maximum), the original width is maintained so no panning can occur.
Pan Width controls the amount of pan excursion. It is the percentage of total panning motion
available after Origin and ImageWidth are set. Range is 0 to 100%.
CentrAtten (Attenuation) is the amount the signal level drops as it is panned through the
center of the stereo image. For the smoothest tracking, a widely accepted subjective reference is
-3dB. Values above -3dB will cause somewhat of a bump in level as an image passes through
the center, while values below -3dB will cause a dip. Range is -12 to 0 dB.
Tremolo
Depth controls the amount of attenuation applied when the LFO is at its deepest excursion
point. Range is 0 to 100%.
LFO Phase shifts the phase of the tremolo LFO relative to the beat reference. Range is 0.0 to
360.0 degrees.
50% Weight is the relative amount of attenuation added when the LFO is at the -6dB point. This
causes the LFO shape to bow up (positive values) or down (negative values). Range is -16 to
3 dB.
L/R Phase sets the phase relationship of the channels. ÒInÓ ßips the left channelÕs LFO out of
phase, with the result that the effect turns into an auto-balancer. ÒOutÓ leaves the left LFO
alone.
Pitcher
Pitcher applies a Þlter 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 speciÞc,
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 an
FXMod.
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
KDFX Algorithm Reference .