ENSONIQ DP/4+ Reference Manual page 174

Feedback 2 A two-unit signal routing option in the DP/4+ as shown below. The A and B units are in
series; the output of the B unit is mixed back into the input of the A unit:
The feedback amount is available among the config parameters. In Feedback 2, the
wet/dry mix of the B unit combines the output of A with the output of B. When B is set
to full dry (0), the output mix of A is heard.
Filter A device that attenuates selected frequencies. For example, a high-pass filter passes all
signals higher than a selected frequency, attenuating all those frequencies below it. A
low-pass filter passes all signals below a selected frequency, attenuating all those
frequencies above it.
Flanger A processor that simulates the effect of two synchronized tape machines in playback of
the same signal, where one machine's speed is varied by pressing on the "flange" of the
tape reel. The small delay causes a phasing cancellation that produces a comb filter.
Changing the delay time causes the "flange" effect. In the DP/4+, flanging is achieved
using interpolated digital delay lines.
Gate A device that completely attenuates a source signal that falls below a pre-determined
(Noise Gate) threshold. A useful tool in eliminating noise, as well as controlling effected signals.
Global Means that it affects all things involved. For example, a global parameter would function
on a system-wide basis.
Hysteresis The property of a system whose behaviour is determined by the level, direction, and
history of a controlling signal. Used in the DP/4+ to provide greater control over gating,
triggering, and compression algorithms.
Input Source The signal that is fed into the DP/4+ via a balanced/unbalanced cable. It is the signal
that gets processed or which controls a side-chain/key.
Inverse An algorithm that forces signals below a control threshold to be raised to that threshold,
Expander while signals above that threshold are passed with a controllable fixed gain. This helps
create a more even signal. This is more accurately termed upward expansion.
Keyed An expander whose effect is determined by a control signal, as opposed to the input
Expander signal. This control signal goes through an EQ side-chain. When the EQed control signal
meets the requirements for expansion, the expander becomes active. This effect is often
used to improve rhythm guitar or drum tracks.
Kill The last parameter of a Config Preset gives you two choices of how to mute effects.
When set to "kill," pressing two times on a Unit button (red LED lit) will cause the effect
processing and dry signal for that unit to be temporarily silenced so that you hear
nothing. "Bypass" is the other choice (see Bypass).
LED LEDs (Light Emitting Diodes) are little lamps that are solid-state devices, and are not like
conventional light bulbs. Under normal conditions, they will not burn out, and have a
virtually unlimited lifetime.
ENSONIQ DP/4+ Reference Manual
Dry
Wet
+
+
A
Feedback
Feedback 2
Glossary
Dry
+
B
V