4ms Company Dual Looping Delay User Manual - Page 16
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Note: In order to keep your tap tempo Ping time when you enter System Settings Mode, depress either
of the other two buttons before pressing the Ping button. If you press the Ping button before the other
buttons, the Looping Delay will register that as a tap and the tempo will change.
Proceed carefully and take the time to understand what you are doing before pressing any
buttons, turning any knobs, or flipping any switches. Changing a System Settings without realizing
what you changed can cause confusion. You can always do a Factory Reset if you want to revert to
safe settings (see Factory Reset section below).
The Time switch is used to determine what parameters you are editing. The buttons and knobs edit
parameters.
Time Center: Auto Mute, Soft Clipping, and Crossfade Time
Auto Mute:
Tap Inf. Hold to toggle Auto Mute on and off. When the light is on, Auto Mute is enabled.
Auto Mute is a noise gate that silences the input when a signal is very low. This prevents runaway
feedback if Feedback is turned up and the module is allowed to run for a long time with no input
signal. Turning it off will introduce extra noise, including small amounts of clicking when the gate
output jacks fire. It's highly recommended to leave Auto Mute on.
Soft Clipping:
Tap Ping to toggle Soft Clipping on and off. When the light is on, Soft Clipping is enabled.
Soft Clipping enables compression when the output signal exceeds 75% of the clipping point. Below
this point, the signal is unaffected. This saturation distortion is often more pleasing than harsh clipping.
Crossfade Time:
Hold down Reverse while turning Time to 1, 4, 6, 8, 10, 12, or 16 to set the Crossfade Time (CFT).
Time at 1: CFT will be 0ms (cross-fading disabled). Reverse will periodically flash once.
Time at 4: CFT will be 2ms. Reverse will periodically flash twice.
Time at 6: CFT will be 4ms. Reverse will periodically flash three times.
Time at 8: CFT will be 8ms. Reverse will periodically flash four times.
Time at 10: CFT will be 25ms. Reverse will periodically flash five times.
Time at 12: CFT will be 100ms. Reverse will periodically flash six times.
Time at 16: CFT will be 250ms. Reverse will periodically flash seven times.
Any time the Looping Delay's read and write "heads" jump from one address to another, there is a
short cross fade created in order to smooth out the splice. This occurs whenever the Time setting is
changed and whenever Reverse or Inf. Hold is toggled. Also, in Inf. Hold mode, when the audio
reaches the end of the loop it cross-fades back to the start. In most cases, the default timing (8ms) of
the cross fade is sufficient and will make the module operate seamlessly. However, advanced users
may wish to experiment with other settings.
Disabling Crossfade Time allows for instant movement between points, at the expense of creating
clicks and pops. This can be improved by enabling Quantized Change Mode (see section page 11)
because QCM forces the clicks to only occur on the beat. On the other hand, using a longer Crossfade
Time makes all transitions very smooth and natural sounding, while limiting how quickly the
parameters can change. In any setting of CFT and when Inf. Hold is on, if the loop size is shorter than
the Crossfade Time, then cross-fading will be disabled in order to preserve the loop size.
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