Roland TD-6 Adjusting the Trigger Signal Detection Time Scan Time, Scan Time 0-4.0 ms 0.1ms steps

Chapter 2 Making the Pad and Trigger Settings (SETUP/TRIG)

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

Scan Time

Time

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

A

Time

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

Mask Time

Time

Sound not produced

If two or more sounds are being produced when you strike the head just once, then adjust Retrigger Cancel.

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