Portamento; Portamento Rate; Portamento Attk; Mono Sample Xfade - Kurzweil Flash Play PC4 Musician's Manual

Portamento

When the Monophonic parameter is set to "On", the Portamento parameter appears.
When the Portamento parameter is set to "On", notes played in a monophonic Program can
glide from the pitch of the previously played note to the pitch of the currently played note.
Portamento is often used in synthesizer lead sounds, or to mimic acoustic instruments like
violin and bass, where a pitch glide is achieved by sliding a finger along a vibrating string.
See Portamento Rate (below) to set the Portamento glide speed, and Attack Portamento
(below) to set the way that Portamento responds to played notes. See the Mono Sample
XFade parameter (below) to improve the sound of Portamento in programs that use multiple
samples.

Portamento Rate

When the Portamento parameter is set to "On", the Portamento Rate parameter appears.
The Portamento Rate parameter determines how fast a note glides from the pitch of one
note to the pitch of the next played note. The value selected for this parameter determines
how many seconds a note takes to glide one semitone (half-step) toward the pitch of the
next played note. For example, at a setting of 12 keys/second the pitch would glide an octave
every second. Select a higher value for a faster pitch glide, or a lower value for a slower pitch
glide. The list of values is nonlinear; that is, the increments get larger as you scroll to higher
values.

Portamento Attk

This parameter toggles between two types of portamento. When set to On, the pitch always
glides to each new note played from the pitch of the last note played. When set to Off, the
pitch glides to each new note played only if the last note played is still being held. This is
useful when you want only some notes to use portamento.

Mono Sample XFade

When applying portamento to programs that use multiple samples (Acoustic Guitar, for
example), the PC4 will play more than one sample root as the pitch glides from the starting
pitch to the ending pitch. This may cause a small click at each sample root transition. You
can eliminate clicks by setting the Mono Sample XFade parameter to On. When the Mono
Sample XFade parameter is set to On, the PC4 performs a crossfade at each sample root
transition to eliminate clicks.
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