feature audio for video
Dolby Metadata Generator option. output is either sent to the C8000 bus The first of these is the C8486 ESDI
Launched at the beginning of this or to an unbalanced output AES card. card, which provides a solution for
year, this new module allows users to The encoding, AC3 for the Dolby D controlling loudness across all
verify, modify or generate metadata, or D+, occurs in the C8612 card which incoming signals. Each SDI stream
including Dialnorm, according to Dolby offers similar intervention features to runs independently - the signals don’t
specifications for both Dolby E and Combating the 8611 card. Signals are then routed need to be locked to a house
Dolby Digital. The card also
the loudness
back to be embedded in the HD/SD reference.
incorporates Dolby metadata display
problem
SDI module which, thanks to its video The ESDI card combines one SDI
and editing, as well as metadata
requires an
delay, makes our Level Magic system interface with one DSP unit that
presets. capable of automatically handling the automatically handles individual audio
With the C8086 in place, the Level
intelligent
whole input/output conversion and loudness processing. It is designed for
Magic system can transport metadata
approach
processing chain in an entirely trouble digital satellite TV, where SDI based
from the point of origin up to the that allows free way. incoming signals don’t match a
point of Dolby Digital encoding, thus
broadcasters
Since Level Magic’s initial uniform synchronisation and have
ensuring that the entire workflow for
to
introduction five years ago, the system widely varying levels. The basic
5.1 audio production remains HD/SD-
automatically
has found its way into numerous version comes with an SD-SDI
SDI embedded throughout. broadcast facilities where it is used for interface and offers four channels of
Level Magic Surround works
monitor and
playout, ingest and format conversion. Level Magic processing. Upgrades to
according to two principles: audio adjust audio It has proved very effective at HD-SDI and to 8-channel Level Magic
follows metadata or metadata follows
levels from
controlling level and loudness for both Surround are available by software
audio processing. It enables loudness
any number
TV and radio broadcasters, as well as license key.
control according to Dolby’s Dialnorm
of sources,
re-broadcasters including IPTV, satellite Each ESDI card receives one TV
values and is ITU BS 1770 compatible, and cable operators such as CANAL + channel through its SDI interface and
even though customers can, of course,
while still
in France, SAT 1, PRO 7 and T-Home in then instantly processes that channel
always choose not to follow these
allowing the
Germany. before re-transmitting it to the
values and generate, for instance, dynamics of Customer reaction to Level Magic is encoder. With ESDI in place, there is
their own metadata set.
the
summed up by Julijus Jakutavicius, no need for synchronisation and no
Following customer requests, an
programme
technical director of Lithuanian-based change in the spectral range - just
efficient complement to Level Magic
to be
Sport1, a specialist satellite sports well controlled dynamics regardless of
Surround was recently developed to broadcaster that installed our the type or quality of the input.
prevent any failure due to missing
maintained
technology to help address its Jünger Audio’s C8000 frames allow
content on our customers’ Dolby loudness issues: “We chose Level users to stack up to 16 different cards,
signals. The C8082 Fail Over/Switch Magic because it provided a safe thus providing 16 SDI channels. Thanks
Over module has been designed with algorithm for controlling the audio to the system’s embedded Level
this idea in mind, enabling fail level of all our programme material Magic algorithm, users don’t need to
over/switch over and ducking on 5.1 without causing distortion or applying worry about synchronising incoming
as well 2.0 signals. severe dynamic processing to the sources before re-transmission, or
Once the signals are processed, sound. We were also impressed by its concern themselves with level issues,
they are returned to the Jünger Audio powerful routing and distribution of because the system automatically
C8611 fully compliant Dolby E signals - and by its modular structure, handles the loudness control of all
encoder, which incorporates a Dolby which gives us an easy upgrade path digital audio signals
metadata display and editing as well for the future. It has all the flexibility Our second new product for this
as up to eight presets. The coded we need for multichannel use and it market is the ANA Series, which is
is also Dolby-ready.” specifically designed for analogue
His views are backed by Roger cable TV head ends where analogue
Randle, engineering manager at TV3 incoming signals don’t match a
in New Zealand, who said: “We uniform synchronisation and have
wanted an audio processor product widely varying levels.
that would normalise our programme With ANA cards in place, all of the
content volume across various synchronisation and loudness issues
channels without adding the effects that occur when re-broadcasting
of dynamics processing. Because incoming signals before sending them
Level Magic is modular, we can mix to the modulators are easily and
and match formats such as AES or SDI, effectively corrected.
SD or HD, 2-channel stereo or 5.1 The series consists of frames
discreet, as we need to. And when comprising either eight or 16
we want to add Dolby and/or analogue/DSP input/processing cards.
metadata to the system we can do Each card combines an analogue
that, too.” interface (two channels) with a DSP
unit to automatically control the
New solutions for satellite individual audio loudness processing
and cable re-broadcasters for each pair of TV channels entering
the card. There is no need for
Alongside our 5.1 and Dolby synchronisation and no change of the
solutions, we have also introduced spectral range - just well controlled
two new products that are targeted at dynamics regardless the type or
satellite and cable re-broadcasters. quality of the input.
24 l ibe l may/june 2009 l www.ibeweb.com
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