46
PORTAMENTO
As stated before, PORTAMENTO provides a sliding from note to note,
smoothing out the otherwise sharp transitions between notes played from
the Master controller. We've already talked about Portamento when we
covered the DCOs and VCF
I
VCA sections earlier in the manual (see 08, 1 8
and 26 "KEYBOARD / PORTAM ENTO") . These parameters are concerned
with programming the amount of Portamento modulating those functions.
This section of the Sub-Page is where we set up the Portamento's
operational parameters.
44 PORT AMENTO RATE
This parameter determines the speed with which the transition from
note to note occurs. Value range is from O to +63 where
O
is no
Portamento (actually its fastest speed) and 63 is the maximum (the
slowest). Therefore, the highe r the Value, the longer the
PORTAMENTO time.
PORTAM ENTO RATE is expressed in "seconds per octave" or the
time that it takes for a note to slide from its original note to its
destination (the new note being played fro m the Master) . This rate is
not related to the VALUE number on the display - it is used simply as a
reference number in programming. You will notice that selecting
among the three different modes in "46 PORTAM ENTO MODE", will
affect their relative Rates even though the RATE Value is set to the
same number. This is because PORTAMENTO is calculated by the
MATRIX-6R's processor in a slightly different way for each mode.
45 PORT MOD BY VELOCITY
The PORTAMENTO RATE can be modulated by Velocity. When this
parameter is used, the speed in which notes are played from the
Master controller will change the RATE. VALUE range is from -63 to
+63 where a setting of O indicates that the RATE is not affected by
Velocity. Using positive Values slows the RATE as keys are played
faster to a maximum set by +63. Using negative Values speeds up the
RATE as keys are played faster. Remember that if your Master
controller is not Velocity responsive, this parameter will not operate.
46 PORT AMENTO MODE
This parameter gives you a choice among the three response modes
of Portamento:
L INEAR
:
Linear Portamento provides an even glide between
notes. The RATE remains the same across the Master's keyboard.
As an example, the time that
It
takes to glide two octaves is twice as
long as the time it takes to glide one octave. When the Rate
VALUE is set for 63, the maximum Portamento is about 35
seconds per octave.
M atrix-GR Owner's Manual
