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Chapter 2 Making the Pad and Trigger Settings (SETUP/TRIG)
2
Adjusting the Trigger Signal
Detection Time (Scan Time)
Since the rise time of the trigger signal waveform may differ
slightly depending on the characteristics of each pad or
acoustic drum trigger (drum pickup), you may notice that
identical hits (velocity) may produce sound at different
volumes. If this occurs, you can adjust the “SCAN TIME” so
that your velocity of playing can be detected more precisely.
As the value is set higher, the time it takes for the sound to be
played increases.
fig.02-019.e
Making the settings
While repeatedly hitting the pad at a constant force, gradually
raise the Scan Time value from 0 msec, until the resulting
volume stabilizes at the loudest level. At this setting, try both
soft and loud strikes, and make sure that the volume changes
appropriately.
fig.02-020_50
Scan Time: 0–4.0 (ms) (0.1ms steps)
Detecting Trigger Signal Attenuation
and Cancelling Incorrect Triggering
(Retrigger Cancel)
Playing snare drum pads and other devices with
commercially available acoustic drum triggers attached may
result in altered waveforms, which may also cause inadvertent
sounding at Point A in the following figure.
fig.02-021.e
This occurs in particular at the decaying edge of the
waveform. Retrigger Cancel detects such distortion in and
prevents retriggering from occurring.
Although setting this to a high value prevents retriggering, it
then becomes easy for sounds to be omitted when the drums
played fast (roll etc.). Set this to the lowest value possible
while still ensuring that there is no retriggering.
You can also eliminate this problem of retriggering with the
Mask Time setting. Mask Time does not detect trigger signals
if they occur within the specified amount of time after the
previous trigger signal was received. Retrigger Cancel detects
the attenuation of the trigger signal level, and triggers the
sound after internally determining which trigger signals were
actually generated when the head was struck, while weeding
out the other false trigger signals that need not trigger a
sound.
Making the settings
While repeatedly striking the pad, raise the “Retrig Cancel”
value until retriggering no longer occurs.
fig.02-022_50
Retrig Cancel (Retrigger Cancel): 1–16
Double Triggering Prevention
(Mask Time)
On a kick pad, for example, if the beater bounces back and
strikes the pad a second time immediately after the intended
stroke—or, like with acoustic drums if you leave the bass
drum beater against the head—it can cause a single strike to
“double trigger” (two sounds instead of the intended one).
The Mask Time setting helps to prevent such problems. Once
a pad has been hit, any additional trigger signals occurring
within the specified “MASKTIME” (0–64 msec) will be
ignored.
When set to a high value, it then becomes easy for sounds to
be omitted when the kick is struck repeatedly in rapid
succession. Set this to as low a value as you can.
fig.02-023.e
If two or more sounds are being produced when you strike the
head just once, then adjust Retrigger Cancel.
Time
Scan Time
Time
A
Time
Mask Time
Sound not produced