InBroadcast - April 2022 - 58

58
www.inbroadcast.com | Vol: 12 - Issue 4 | April 2022
InFile
Optimization for cost and remote efficiency cont'd...
Multiformat
multiprotocol
a technology
with
streaming is
that
is
encoding and
also
offered
Digigram's range of IQOYA
codecs. Each input program can be
streamed at the same time towards
FM transmitter sites, other studios,
WEB radio CDNs in multi-bitrate,
and DVB multiplexers in MPEG-TS/
IP.
Among Digigram's
is
customers
adopting the transport of the MPX
signal
Estonian broadcaster
Levira. The digital services provider
chose the IQOYA LINK codecs which
permit a local MPX backup in case
the IP MPX stream is lost (backup is
a 192 kHz MPX file stored on an SD
card).
" This customer recently extended
the numbers of codecs and selected
IQOYA X/LINK-MPX thanks to its full
compatibility with previous
series says St├ęphane Bert, Pre-Sales
Manager. Also important
is
the
support of redundant dual streaming,
and automatic failover to an MPX
file stored on the SD card. The fleet
of IQOYA codecs is monitored via an
SNMP supervisor. "
He adds
that
LINK
for several
French public
radio has been using Digigram's
multichannel
years
international programs. Seven
programs
are delivered on an
AES67 network, and a SERV/LINK
with AES67 audio connectivity
collects
these programs,
encodes and streams them
simultaneously to WEB radio
CDNs, to a DVB multiplexer,
and to a monitoring system.
St├ęphane Bert,
Pre-Sales Manager, Digigram
codec IQOYA SERV/
for its
operation is more expensive in many
places, the challenge is the technical
simplification of the FM operation. "
WorldCast Systems delivers FM
(Ecreso) with the
transmitters
highest
efficiencies. In addition,
the new MPX compression format
APTmpX further reduces hardware,
maintenance,
and
operating costs.
" Simplifying the signal chain
by
sending the finalized
network
The APTmpX compression algorithm
reduces the wideband MPX signal to
the bandwidth of a baseband audio
signal, being either 300/400/600 or
900 kbps, by maintaining the highest
signal fidelity at the lowest bit rate
with the most outstanding resilience
to impairments during transmission.
" APTmpX is one format among
many in an APT audio codec.
Therefore, switching from the
discrete transmission to composite
MPX transmission is completed by
selecting the APTmpX format from
the list of algorithms, thus generating
cost savings. "
Now that
sporting events
and
broadcasting are back, immersive
audio is starting to gain traction
and generally being paired up with
4K (UHD) video. Large events like
the Olympics
and
tournaments
help drive the
adoption of new technologies and
features. Newer audio codecs such
as MPEG-H or Dolby AC-4 enable
some basic mixing functionality
to
be performed in the receiver based
on a combination of the viewer's
preferences combined with metadata
configured
or content
by
Digigram's X-LINK is dedicated to the transport of the MPX signal
creator-this
personalized audio.
The LA-5291 from the Telos Alliance
The LA-5300 model can encode
PCM into AC-4, in stereo, 5.1,
or 5.1.4 (Dolby
configurations, and
There is currently an urgent need to
drive forward the cost optimization of
the FM broadcasting infrastructure.
" The shift in media policy towards
digital
radio is
increasingly
maneuvering FM broadcasting into
the 'second
channel' position, "
LINK
says Hartmut Foerster, APT Product
Manager, WorldCast Systems. " FM
is almost
perfectly developed
infrastructure and still
in
reaches the
most mobile radio listeners. Since a
parallel digital and analogue radio
MPX signal from the studio to the
transmitter network is more attractive
than transporting the discrete
signal
components, " he explains.
" The savings in hardware for sound
processors and stereo encoders are
exceptionally high as these devices
are only needed once in the entire
signal chain. "
The particular challenges
are providing the high network
bandwidth required and preserving
the fragile MPX's technical integrity.
" Experimental
of
personalised
happening around
broadcasts
audio are
the globe,
allowing the viewer to select
which language they want
to
listen to with the same 5.1 or 5.1.4
bed mix, " says Larry Schindel,
Telos Alliance Product Manager.
" Transmitting a common bed mix
with different mono dialog objects
for the viewer to select from
provides a better experience for
all viewers while saving valuable
bitrate in the final
signal. "
transmission
The Linear Acoustic UPMAX ISC
from Telos Alliance, upmixes stereo
or stereo plus dialogue to a 5.1-ch
output, or a stereo, stereo + dialog,
or 5.1-ch input to a 5.1.4 output. This
provides a consistent output format
regardless of the incoming audio. The
low-latency of the units means that
it is suitable to use in a production
environment or in a transmission
environment.
Atmos) channel
optionally
stereo or 5.1 Dolby Digital (AC-3) or
Dolby Digital Plus (E-AC-3) for legacy
services. Upmixing is
included
so that the LA-5300 provides a
consistent output format regardless
of the incoming audio configuration.
Nielsen and/or Verance
watermarking is optionally available
as well. Up to four audio programs
can be processed and encoded.
The LA-5291 encodes Dolby Atmos
as a Dolby Digital Plus JOC bitstream
for final
delivery
to the viewers.
UEFA football
the broadcaster
enables
It also encodes or decodes Dolby
ED2, which is a broadcaster-tobroadcaster
immersive audio codec.
Dolby ED2 is designed to survive
multiple encode/decode generations
without audible degradation. The LA5291
will also transcode ED2 into a
Dolby Atmos (Dolby Digital Plus JOC)
bitstream. Schindel reports that the
UPMAX ISC and LA-5300 have been
used successfully to deliver content
for the Tokyo Olympics. The LA-5291
is currently being used in a " large
international football series " being
broadcast in Europe.
http://www.inbroadcast.com https://inbroadcast.com/news/worldcast-systems-launch-aptmpx

InBroadcast - April 2022

Table of Contents for the Digital Edition of InBroadcast - April 2022

Contents
InBroadcast - April 2022 - Intro
InBroadcast - April 2022 - Cover1
InBroadcast - April 2022 - Cover2
InBroadcast - April 2022 - Contents
InBroadcast - April 2022 - 4
InBroadcast - April 2022 - 5
InBroadcast - April 2022 - 6
InBroadcast - April 2022 - 7
InBroadcast - April 2022 - 8
InBroadcast - April 2022 - 9
InBroadcast - April 2022 - 10
InBroadcast - April 2022 - 11
InBroadcast - April 2022 - 12
InBroadcast - April 2022 - 13
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InBroadcast - April 2022 - 16
InBroadcast - April 2022 - 17
InBroadcast - April 2022 - 18
InBroadcast - April 2022 - 19
InBroadcast - April 2022 - 20
InBroadcast - April 2022 - 21
InBroadcast - April 2022 - 22
InBroadcast - April 2022 - 23
InBroadcast - April 2022 - 24
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InBroadcast - April 2022 - 27
InBroadcast - April 2022 - 28
InBroadcast - April 2022 - 29
InBroadcast - April 2022 - 30
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InBroadcast - April 2022 - 32
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InBroadcast - April 2022 - 34
InBroadcast - April 2022 - 35
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InBroadcast - April 2022 - 39
InBroadcast - April 2022 - 40
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InBroadcast - April 2022 - 45
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InBroadcast - April 2022 - 50
InBroadcast - April 2022 - 51
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InBroadcast - April 2022 - 53
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InBroadcast - April 2022 - 57
InBroadcast - April 2022 - 58
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InBroadcast - April 2022 - 62
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InBroadcast - April 2022 - 101
InBroadcast - April 2022 - Cover3
InBroadcast - April 2022 - Cover4
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