20
values delay the right side. Inj LP controls the cutoff frequency of a 1-pole (6dB/oct) lowpass filter
associated with the injector.
Predelay can give the illusion that a space is more voluminous. Separate control over left and right
predelay is provided that can be used to de-correlate the center image, increasing reverb envelopment.
In addition to filters inside the ambience feedback loop, there also may be filters placed at the output of the
reverb including a low shelf, high shelf, and/or lowpass.
Algorithms that use Early Reflection circuits employ a combination of delays, diffusers, and filters to
create ambience that is sparser than the late portion of the reverb. These early reflections model the initial
near-discrete echoes rebounding directly off of near field surfaces before the reverb has a chance to become
diffuse. They add realism when emulating real rooms and halls.
Your starting point when creating a new reverb preset should be the Room Type parameter. This
parameter selects the basic type of reverb being. Due to the inherent complexity of reverb algorithms and
the sheer number of variables responsible for their character, the Room Type parameter provides
condensed preset collections of these variables. Each Room Type collection has been painstakingly
selected by Kurzweil engineers to provide the best sounding combination of mutually complementary
variables modeling an assortment of reverb families.
When you select a room type, an entire incorporated set of delay lengths and diffusion settings are
established within the algorithm. By using the Size Scale, DiffAmtScl, DiffLenScl, and Inj Spread
parameters, you may scale individual elements away from their pre-defined value. When set to
1.00x
, each
of these elements is equivalent to its preset value as determined by the current Room Type.
Room Types with similar names in different reverb algorithms do not sound the same. For example, Hall1
in
does not sound the same as Hall1 in
.
The Size Scale parameter scales the inherent size of the reverb chosen by Room Type. For a true
representation of the selected Room Type size, set this to
1.00x
. Scaling the size below this will create
smaller spaces, while larger scale factors will create large spaces. See Room Type for more detailed
information.
The InfinDecay switch is designed to override the Rvrb Time parameter and create a reverb tail with an
infinite decay time when
On
. However, certain HF Damping settings may reduce this effect, and cause the
tail to taper away.
Classic Verb and Classic Place
Classic reverbs are 2-PAU algorithms with early reflections. The late portion consists of an input diffuser,
ambience generator with low shelving filters, lopass filters, and LFO moving delays, and predelay.
The early reflection portion consists of one delay per channel sent to its own output channel controlled by
E Dly L and E Dly R, and one delay per channel sent to its opposite output channel controlled be E Dly LX
and E Dly RX. Each of these delays also use a Diffuser. Diffusion lengths are separately controlled by
E DifDly L, E DifDly R, E DifDly LX, and E DifDly RX while diffusion amounts are all adjusted with
E DiffAmt.
The late reverb and early reflection portions are independently mixed together with the Late Lvl and
EarRef Lvl controls. The wet signal is passed through a final high shelving filter before being mixed with
the dry signal.