In Broadcast - CABSAT 2016 - 54


54

www.inbroadcast.com | CABSAT InShow Guide | 8 - 10 March 2016

Orban OPTIMOD Audio Processing
Since the early 70s Orban, with its renowned OPTIMOD Series, has been the leading manufacturer of AM -
FM - DAB - TELEVISION loudness controllers and streaming audio processors...
By Peter Lee,
VP European Operations

O

ur engineering team based in San
Leandro, USA, is headed by the
company's Founder, Bob Orban.
In 2009, we successfully moved our
manufacturing and global sales to
Orban Europe GmbH, in Germany.
Orban introduced the first FM
Audio Processor mid-70s. In 1981,
we introduced the very first TV
loudness controller, the OPTIMOD TV
8180A, of which we sold thousands to
broadcasters around the globe.
At Orban we are proud to have
been successfully engineering and
manufacturing television loudness
controllers, AM, FM, and DAB
processors for more than 40 years, in
a market which is constantly evolving.
From the BBC to CNN, many
broadcasters rely on the OPTIMOD
to ensure that their audio quality is
perfect.
A Winning Strategy
In
the
toughest
competitive
environment ever, a winning strategy
includes OPTIMOD-FM 8600. It is
Orban's flagship processor, and the
next step beyond the OPTIMOD-FM
8500. There are two versions of
Optimod-FM 8600. Model 8600HD is
the full FM and digital radio version,
and the analog FM-only version is
8600FM.
Featuring versatile five-band and
two-band processing for both analog
FM transmission and digital media,
the 8600 provides the industry's most
consistent sound, track-to-track and
source-to-source. This consistency
allows users to create a sonic signature
for their station with the assurance
that the signature will stay locked in,
uniquely branding a user's sound.
The
8600
provides
stereo
enhancement, equalisation, AGC,

multiband
compression,
low-IM
peak limiting, stereo encoding, and
composite limiting - everything that
even the most competitive major
market station needs to stand out
on the dial. More than 20 excellent
sounding, format-specific factory
presets get users started. Although the
factory presets are fully competent,
out of the box, users can customise
them with easy one-knob LESS-MORE
control in Basic Control, with 50
parameters Intermediate Control, or
with more than 120 in the Advanced
Controls, the versatility of which will
satisfy even the most finicky on-air
sound designer.
Improved Peak Limiter Technology
Dramatically improved peak limiter
technology decreases distortion while
increasing transient punch and highfrequency power handling capacity.
Compared to the FM-channel peak
limiter in OPTIMOD-FM 8500, the new
peak limiter typically provides 2.5 to
3 dB more power at high frequencies,
which minimises audible HF loss
caused by pre-emphasis limiting.
Drums and percussion cut through
the mix, highs are airy, and "problem
material" that used to cause audible
distortion, is handled cleanly.
Loudness and True Peak Control
The digital radio and analog radio
processing chains offer ITU-R BS.17703+ loudness meters and safety limiters
for use in countries that enforce a
BS.1770 loudness limit on digital and/
or analog radio broadcasts.
The 8600HD implements "true
peak" control in the HD processing
chain by oversampling the HD peak
limiter's sidechain at 256 kHz. This
prevents clipping in a playback

Orban's OPTIMOD-FM 8600
provides versatile five-band and
two-band processing, for both analog
and digital media

device's analog signal path, by
predicting and controlling the analog
peak level to follow the playback
device's reconstruction filter, to an
accuracy better than 0.5 dB. For
typical programme material, accuracy
is 0.2 dB. Without "true peak" control,
analog clipping can occur even if all
peak values of the digital samples are
below 0 dBFS. This phenomenon has
also been termed "0 dBFS+".
Versatility Doesn't Stop With Sound
The 8600 has an internal, DSPbased stereo encoder (with a patented
"half-cosine interpolation" composite
limiter operating at 512 kHz sample
rate), to generate the pilot tone
stereo baseband signal, and control its
peak level. The composite limiter is a
unique, "you can only do this in DSP"
process, that beats composite clippers
by preserving stereo imaging, while
fully protecting the stereo pilot tone,
RDS/RBDS, and subcarriers.
The stereo encoder's stereo
subchannel modulator can operate
in normal double sideband mode
and in an experimental, compatible,
single-sideband mode that is offered
to enable users to compare and assess
the two modes.
For our European customers,
a second generation ITU BS 412
multiplex power controller yields
the best possible coverage, while

flawlessly complying with the
standard. It can be adjusted to
maximise loudness within the
constraints of the BS 412 standard,
or to produce less gain change at the
expense of slightly lower loudness.
New for the 8600 is the ability to
apply MPX power gain reduction after
the clippers, so that the texture of the
processing can include more "clipper
sound", when desired. Regardless of
how the multiplex power controller
is adjusted, users can be sure that
they will always meet the ITU BS 412
requirements flawlessly.
A loop-through connection is
provided to enable a ratings encoder
(such as Arbitron) to be inserted
between the output of the audio
processing and the input to the stereo
encoder.
Analog Fallback to Digital control
allows Silence Sense to switch the
active input from analog to digital, if
silence is detected in the analog input
signal, but not on the digital input
signal.
This function works vice versa as
well, on both analog and digital AES
input. The Silence Sense parameters
apply to both simultaneously, and both
detectors are available to drive the
8600's tally outputs and for sending
SNMP traps/alerts.
RDS
The 8600 includes a full-featured
RBS/RBDS generator at no additional
charge. The generator supports
dynamic PS. It can be controlled via
8600 presets and an ASCII terminal
server that can be connected to
automation to support the displaying
title and artist.
For
more
detailed
technical
information visit www.orban.com


http://www.inbroadcast.com http://www.orban.com

Table of Contents for the Digital Edition of In Broadcast - CABSAT 2016

In Broadcast - CABSAT 2016 - Intro
In Broadcast - CABSAT 2016 - Cover1
In Broadcast - CABSAT 2016 - Cover2
In Broadcast - CABSAT 2016 - 3
In Broadcast - CABSAT 2016 - 4
In Broadcast - CABSAT 2016 - 5
In Broadcast - CABSAT 2016 - 6
In Broadcast - CABSAT 2016 - 7
In Broadcast - CABSAT 2016 - 8
In Broadcast - CABSAT 2016 - 9
In Broadcast - CABSAT 2016 - 10
In Broadcast - CABSAT 2016 - 11
In Broadcast - CABSAT 2016 - 12
In Broadcast - CABSAT 2016 - 13
In Broadcast - CABSAT 2016 - 14
In Broadcast - CABSAT 2016 - 15
In Broadcast - CABSAT 2016 - 16
In Broadcast - CABSAT 2016 - 17
In Broadcast - CABSAT 2016 - 18
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In Broadcast - CABSAT 2016 - 76
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