Roland V-Drums TD-50 Data List page 25

Parameter
THRESHOLD tab
ExtNoiseCancel*1
RIM tab
Trig Type
Head/Rim Adjust*2
XStick Threshold*2
SCAN tab
Trig Type
Scan Time
Mask Time
Retrigger Cancel
Value Explanation
This setting lets you prevent a drum from being triggered unwantedly by a strike on a drum to which no
drum trigger is attached, or by sound or vibration from the surroundings (noise cancellation).
This noise cancel function can be used if you use a stereo cable to connect an "RT-30K" or "RT-30HR" drum
trigger to the following TRIGGER IN jacks and specify the Trig Type.
Supported TRIGGER IN jacks
OFF, 1–5
5 KICK
5 SNARE
5 TOM1–4
5 AUX1–4
* The "RT-30H" does not support the noise cancel function.
This is the same parameter as Trig Type (p. 22) in the BANK tab.
If the rim sound is heard when you strike the head strongly, increase this value. If the head sound is heard
when you play an open rim shot, decrease this value. If the head sound is heard when you softly play a rim
shot, decrease this value.
MEMO
0–80
If the rim shot sound is heard when you play a head shot, or if a head shot sound is heard when you play
a rim shot, make small changes to the Head/Rim Adjust values while you continue trying out the results.
Extreme changes to the values will cause the wrong sound to be heard when you strike the pad, for
example producing the rim shot sound when you play a head shot.
For a pad that is connected to a TRIGGER IN jack, this specifies the force at which to switch between the cross
stick sound and open rim shot sound.
Setting this to a higher value makes it easier to get cross stick
sounds. When set to "0, " playing a cross stick produces the open rim
shot sound.
0–127
For a digitally connected pad that allows cross stick technique,
playing a cross stick with a strike that is stronger than the value of
this setting produces the open rim shot sound.
* For a pad that is connected to a TRIGGER IN jack, be aware that if
this value is raised excessively, the cross stick sound will also be
heard when you play an open rim shot.
This is the same parameter as Trig Type (p. 22) in the BANK tab.
Trigger signal detection 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 way of playing can be detected more precisely.
0–4.0 ms
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.
* As the value is set higher, the time it takes for the sound to be played increases. Set this to the lowest value
possible.
Double triggering prevention
When playing a kick trigger the beater can bounce back and hit the
head a second time immediately after the intended note—with
acoustic drums sometimes the beater stays against the head—this
causes a single hit to "double trigger" (two sounds instead of one).
The Mask Time setting helps to prevent this. Once a pad has been
hit, any additional trigger signals occurring within the specified
"Mask Time" will be ignored.
0–64 ms
Adjust the "Mask Time" value while playing the pad. When using a
kick trigger, try to let the beater bounce back and hit the head very
quickly, then raise the "Mask Time" value until there are no more sounds made by the beater rebound.
MEMO
If two or more sounds are being produced when you strike the head just once, then adjust Retrigger
Cancel.
Detecting trigger signal attenuation
Important if you are using acoustic drum triggers. Such triggers can
produce altered waveforms, which may also cause inadvertent sounding
at Point A in the following figure (Retrigger).
This occurs in particular at the decaying edge of the waveform. Retrigger
Cancel detects such distortion in and prevents retriggering from
occurring.
While repeatedly striking the pad, raise the "Retrigger Cancel" value until
retriggering no longer occurs.
1–16
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.
MEMO
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.
TRIGGER
High
Rim Shot
Sound
Cross Stick
Sound
Playing
Low
Soft Hard dynamics
XStick Threshold
Scan Time
Time
Mask Time
Time
Sound not produced
Time
25