In Broadcast - BroadcastAsia 2015 - 34


34

www.inbroadcast.com | BroadcastAsia | CommunicAsia | InShow Guide | 2-5 June 2015

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, equalization, 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 customize
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 high
frequency 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 device's

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

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 program
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 https://www.youtube.com/watch?v=I3UNqr4-BYY http://www.orban.com/ https://www.youtube.com/watch?v=I3UNqr4-BYY http://www.orban.com

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In Broadcast - BroadcastAsia 2015 - Cover1
In Broadcast - BroadcastAsia 2015 - Cover2
In Broadcast - BroadcastAsia 2015 - 3
In Broadcast - BroadcastAsia 2015 - 4
In Broadcast - BroadcastAsia 2015 - 5
In Broadcast - BroadcastAsia 2015 - 6
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In Broadcast - BroadcastAsia 2015 - 8
In Broadcast - BroadcastAsia 2015 - 9
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In Broadcast - BroadcastAsia 2015 - 62
In Broadcast - BroadcastAsia 2015 - Cover3
In Broadcast - BroadcastAsia 2015 - Cover4
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