Roland TD-6 用户手册

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

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

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.

While repeatedly striking the pad, raise the “Retrig Cancel” 
value until retriggering no longer occurs.

fig.02-022_50

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

Sound not produced