ENSONIQ DP/2 Specifications Page 68

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Section 2 — Algorithms
52 ENSONIQ DP/4+ Reference Manual
HALL REVERB
Hall Reverb is a large acoustic space, and provides a high density reverb.
Hall Reverb Signal Routing
Diffuser
Main
Outputs
Left
LPF
LPF
Definition
(Decay Diffuser)
Echo TimeEcho Time
L
Diffuser
Right
LPF
LPF
Definition
(Decay Diffuser)
Echo TimeEcho Time
R
The signal enters a low pass filter, and goes directly through the diffusers which smear the signal.
The signal is then routed to a larger decay diffuser, known as Definition, and is diffused over a
period of time (creating a decay). There are taps from both the left and right Definition that are
routed to the output to create a synthesized stereo output. A signal from the Definition goes
through a low pass filter followed by a low frequency decay parameter, which controls the rate of
decay of the low frequencies. There is also a parameter at this stage that controls the decay time
of both the left and right signals. The left and right signals are routed back into the Definition.
There are two echo times between the diffuser and the definition that can be routed directly to
the output, or sent back through the definition. There is also an external dry signal (not shown)
that goes directly from the input to the output and is controlled with the mix parameter (01).
01 — Mix
02 — Volume
These parameters are explained in detail under the Mix and Volume Parameters description,
found in the beginning of this section. Reverbs sound best with a Mix of wet and dry.
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