By | Fri, 16 Sep 2011

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Fig. 1 70 DVZ Strings lets you control every aspect of the library in real time. | |
Orchestral library offers
advanced realtime control
BY ROB SHROCK
I’VE BEEN fortunate to work with great string
orchestras both onstage and in the studio for years
now. I also work with all of the major orchestral
sample libraries and have the 200-plus tracks
in my DAW template to prove it. When 70 DVZ
Strings was sent to me for review, I thought there
must be a mistake when I read the specs, which
claimed that all string articulations were available
at all times for each section and the whole library
operated on only five MIDI channels and was
around 8GB in size. How could that be?

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| Fig. 2 The Master Orchestrator GUI lets you build an ensemble of any size from a single player per section up to a 70-piece section. | |
70 DVZ Strings, the brainchild of noted
composer Chris Stone, employs an innovative
approach toward controlling samples. The DVZ
Master Orchestrator application resides on the
PC with Kontakt Player and allows the user to
control every aspect of the library in real time
from the GUI without having to ever work
directly in Kontakt. MIDI is sent from the
DAW to DVZ, where it is processed and split
into five MIDI streams (Violins I, Violins II,
Violas, Celli, Basses) and sent back to your
DAW and recorded onto separate MIDI tracks,
where it can be further edited. Simultaneously,
the channelized audio from Kontakt is also
routed to your DAW. The whole system works
in real time, in effect allowing you to play
on your keyboard and hear the notes come
back intelligently split among the various
string sections. The effect is quite stunning,
especially when you realize that this is
happening in real time (see Figure 1).
A single LAN connection over Ethernet
is capable of moving the entire MIDI back
and forth, as well as the audio stream from
Kontakt via either Vienna Ensemble Pro or
Audio Impressions’ AudioPort Universal
software. Setting up a DVZ system properly
is not a simple matter; however, the support
team at Audio Impressions was very helpful
in sorting out the details and getting me up
and running. In my case, I was running Logic
on a Mac, and eventually settled on using
a separate MIDI interface and USB audio
interface, which is my preferred method for
a live performance setting and works equally
well in the studio.
One of the main aspects of DVZ is that
each “desk” of players is actually a unique
set of samples and is recorded by different
players. The Master Orchestrator GUI allows
you to turn on and off the various desks and
build an ensemble of any size you want,
from a single player per section all the way
up to a 70-piece (18-16-14-12-10) section (see
Figure 2). Articulations can be automatically
switched among arco, tremolando, pizzicato,
“Bartok pizz,” col legno and harmonics,
and the effect is an immediate change in
articulation with no new samples to load.
You can use auto-bowing or specifically
determine up or down, heel, mid or tip
bowing. You can choose open strings, Sul II,
Sul III, or Sul IV positions, and all employ
different samples that transition seamlessly.
Con sordinos are also available; however,
a modeling approach is used rather than
utilizing new samples. The effect is very welldone
and believable.

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| Fig. 3 An example of an M-Audio Oxygen 8 mapped to 70 DVZ Strings. | |
Onscreen sliders allow you to vary
performance parameters even further. One
of my favorites is modulating between Sul
tasto (bowing closer to the fingerboard)
and sul pont (closer to the bridge). As you
modulate between the bow positions, the sound
changes in real time and sounds completely
natural; this feature is not found in many
other libraries. The time and pitch between desks
can be spread—particularly useful for replicating
the inaccuracies of players on fast runs.
All of these performance parameters can
be controlled onscreen or assigned to an
external MIDI controller in addition to your
main keyboard controller’s pedals, wheels,
and buttons. For my setup, I used an M-Audio
Oxygen 8 for switching between articulations
on the fly (see Figure 3). I have spent 25
years performing “strings” live, and I can do
things in real time with this system that is
simply impossible with any other setup. I can
see a whole crop of live musicians using a
roadworthy turnkey DVZ system onstage.
Once the main MIDI performance is
recorded and channelized, you can also
edit each section individually, applying
all of the above editing features to each
section independently. However, one of the
strengths of DVZ is that a lot of the work
is already done for you if you have your
controllers set up well, resulting in much
less editing time after the fact.
I tested DVZ on a turnkey AiDAW PC
system. Although more expensive than the
standalone library, the system is guaranteed
to meet the demanding specs and is set up
and tested before shipped. The AiDAW
also provides all the technical support
necessary to get you up and running
properly with the rest of your setup, while
the standalone library provides an hour of
technical support. In my opinion, anyone
serious about string playing and recording
professionally would be better served with
the turnkey system rather than relying on
building an appropriate system themselves.
Audio Impressions will be releasing a
brass library soon, followed by woodwinds.
Additional libraries and refi nements to DVZ
are also in development.
SUMMARY
STRENGTHS: All articulations
available instantaneously and
operates on only 5 MIDI channels.
DVZ technology intelligently divides
incoming MIDI into divisi between
sections and maintains appropriate
player counts at all times. Smooth
transitions from legato to marcato
and various performance settings.
Articulation changes are applied
immediately.
LIMITATIONS: Technically
demanding and requires a standalone
PC with a lot of horsepower and fast
hard drives.
$999 MSRP 70 DVZ
STRINGS LIBRARY ONLY
$3,699 MSRP AIDAW TURNKEY
PC SYSTEM + LIBRARY
(ALL THIRD-PARTY SOFTWARE INCLUDED)
audioimpressions.com