Roland OCTAPAD SPD-20 PRO Manuel Du Propriétaire page 23

Parameter Value
RetrigCnl
1–16
(Retrigger Cancel)
MaskTime 0–64ms
Rim Gain 0–3.2
H/R Adjust
0–80
(Head/Rim Adjust)
NoiseCnl
OFF, 1–5
(Ext Noise Cancel)
XTalkCnl 0–80
VH SET
–
Explanation
Detecting trigger signal attenuation
When you strike a snare drum etc. to which a commercially available
drum trigger is attached, there might be cases in which the waveform is
misshapen, causing another trigger to unintendedly occur at point "A" in the
following illustration (retriggering).
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.
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.
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.
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.
Increasing this value makes it more likely that a note played in rapid succession will drop out. Set this to
as low a value as possible.
MEMO
If two or more sounds are being produced when you strike the head just once, then adjust Retrigger
Cancel.
Adjusts the balance between the force of striking the rim or edge and the loudness of the sound.
If you increase this value, even soft strikes on the rim are sounded at high volume. If you decrease this
value, even strong strikes on the rim are sounded at low volume.
* This is available only for pads that support rim shots.
This setting specifies how easy it is to play a head shot or rim shot.
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
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.
* This is available only for pads that support rim shots.
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 EXTERNAL TRIGGER IN jacks and specify the Trig Type.
* The "RT-30H" does not support the noise cancel function.
If two pads are attached to the same stand, the vibration from one struck pad may cause the other pad
to sound without your intention. This is called "crosstalk. " Crosstalk cancellation is a setting that prevents
this type of crosstalk.
For details, refer to "Data List" (PDF).
Settings for V-Hi-Hat
* This is shown only when the Type is set to "VH11" or "VH10. " For details, refer to "VH SET setting"
(p. 24).
Connecting External Devices
Time
Mask Time
Time
Sound not produced
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