Kurzweil PC3, Musician'S Manual

Page: 192 / 308

9-14
Effects
Compressors, Expanders, and Gates
Mid n Freq sets the center frequency for parametric band n , with a range of 16 to 25088 Hz, in
increments of a semitone.
Mid n Width set the bandwidth of the filter on band n , with a range of 0.01 to 5 octaves.
Enhancers
Enhancers modify the spectral content of the input signal by boosting existing spectral content,
or stimulating new ones. Two- and three-band versions are provided.
Drive adjusts the input into each band. Increasing the drive will increase the effects. Range is
-79.0 to 24.0 dB.
Xfer adjusts the intensity of the transfer curves. Range is -100 to 100%.
EQ Morpher
This algorithm uses two four-band bandpass filters, A and B, and moves between them, which
among other things, can produce a very convincing simulation of a human vocal tract.
FreqScale offsets the filter frequencies for each set of filters. After setting the filter parameters
( Freq , Gain , and Width ), the FreqScale parameters will move each of the four filter frequencies
together by the same relative pitch. Range is -8600 to 8600 cents.
Morph A>B . When set to 0% the “A” parameters are controlling the filters, and when set to
100%, the “B” parameters control the filters. Between 0 and 100%, the filters are at interpolated
positions. When morphing from A to B settings, the A filter #1 will change to the B filter #1, A
filter #2 moves to B filter #2, and so on. Range is 0 to 100%.
Compressors, Expanders, and Gates
A wide range of Compression and Expansion effects is available in the PC3. The various
algorithms include different combinations of:
• compressors with soft-knee characteristic—the compression action comes in gradually as
the signal level approaches the threshold
• compressors with hard-knee characteristic—the compression action comes in abruptly
when the signal reaches the threshold
• expanders
• multiband compressors that break the signal up into three frequency bands and compress
them all separately
• sidechains or output EQs
• reverbs and compressors in combination
• gates
• gated reverbs
All of the Compression algorithms use these parameters:
FdbkComprs (Feedback Compression) selects whether to use feed-forward (set this to “Out”) or
feed-back (set this to “In”) compression. The feed-forward configuration uses the input signal as
a side-chain source, which is useful when the compressor has to act really quickly. The feed-back
configuration uses the compressor
output as the side-chain source, which lends itself to more
subtle, but not as quick-reacting, compression.
Atk (Attack) Time for the compressor is adjustable from 0.0 to 228.0 ms.
Rel (Release) Time for the compressor is adjustable from 0 to 3000 ms.