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Section 23
Control Assigns
Sweep Time
Taking a look at the manual you quickly discover that the
Sweep Time is described as having a range of 0-100. Big
deal. Glad I know that. So here is what you really need to
use the thing properly—A TABLE! Again these timings
were determined using a GT-3 but the GT-5 is expected to
be identical.
Sweep
Total Time
Time
in ms
0
10
20
30
40
50
60
70
80
12485
90
18910
100
37810
If a source mode of toggle is used, then the value change
will take place at the following points:
Linear (Rise)
Slow Rise
Fast Rise
Again, these figures are approximate and have been derived
by observation. These figures also hold good for on/off
values even when the mode is normal.
If you change the active range then only when the source is
within the active range does the target value change. This in
effect allows you to choose the point at which the portion of
any the three curves the value will change. It should also be
remembered, that choosing an active range, which does not
start at zero, will mean that the change of parameter value
will be delayed until the active range is entered. Conversely
if the active range ends at less than 127, the change of
parameter value will end prematurely. If the mode has been
set to toggle, you are effectively altering the position of the
half way value, and therefore altering the toggle switchover
point. This means you should be able to set any length of
delay that you desire, rather than being restricted to
50/75/17.5% of the sweep time.
The Unofficial GT-3 Owner's Manual Supplement talks
about delay time between the trigger occurring and the
sweep starting. On page 35 "You tell the internal pedal how
much time to wait before executing this function" and again
on page 36 "-- and just tell these assigns to wait much
longer before executing these functions.". Whilst this is
great article I am afraid to say that there is no such 'delay'
parameter. This 'delay' functionality can only be obtained
© Copyright 2000-2002 Barry S. Pearce et al.
Approx Time
in seconds
140
400
775
0.75
1275
1.25
2410
2.50
3540
3.50
5425
5.50
8205
8.25
12.50
19.00
38.00
:
50% of sweep time
:
75% of sweep time
:
17.5% of sweep time
through sacrificing part of the sweep range by using a
smaller active range or by using toggle mode rather than
normal mode, or a combination of the two.
If you require a reverse of one of the sweep curves then
simply reverse the target min and max values. This will then
give you Linear (Fall), Slow Fall and Fast Fall. Thus you
have in fact got six possibilities not just three!
If the trigger re-occurs before the time has expired, the
current assign is cancelled and the new one started instead.
The Wave Pedal Source
Again the Wave Pedal is one of the 'bolt in' sources for a
control assign. It is described on page 30 of the official GT-
3 manual, and page 27 of the official GT-5 manual, as well
as in the unofficial supplement. Once again, there are a few
blanks that need filling in.
Rate
Let's examine the rate parameter and see how long one
cycle really is. As per normal, all these timings have been
obtained from observation – none of the following data has
come from Roland. As before, the timings were derived
using a GT-3 but the GT-5 is expected to be identical.
Rate
1 x Cycle
Time in ms
0
28670
10
12030
20
30
40
50
60
70
80
90
100
It must be said that above 50, the wave shape is lost slightly
and is no longer perfectly crisp.
The biggest disadvantage of the Wave Pedal is that it
doesn't have BPM settings for song tempo synchronisation.
The affect of active range on triggering is the same as for
normal control assigns and the internal pedal. The target
parameter value will only be changed whilst the wave
pedal's position is inside the active range.
Setting the source mode to toggle will cause the value to
change at the median point on the rise of the wave and on
Approx Time
in seconds
28.50
12.00
6660
6.50
3710
3.75
2177
2.25
1274
1.25
900
1.00
650
465
0.50
340
250
0.25
102
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