In Broadcast - September 2016 - 76

www.inbroadcast.com | Vol: 6 - Issue 9 | September 2016

InFile

Audio & Video Codecs
Contributing Editor David Kirk updates on the latest codec
technology deployments for broadcast applications...

ost of the codecs discussed in is designed for broadcast radio
this overview of new technology applications. Audio is bi-directional
are designed to allow rapid transfer of and peer-to-peer. It can be used via
broadcast-quality audio or video from internet, intranet, WAN, LAN, 3G, 4G,
one point to another, typically from a and other networks.
reporter communicating a hot story
Axel Technology's Streamer Max
back to base.
MkII is a bidirectional/full
IP looms ever larger in this
duplex device for audio signal
product sector given the
encoding and decoding over
widespread availability of
IP. Features include analogue
high-speed cellular telephone
and digital in/out with A/D
links. For plain ingenuity,
and D/A conversion, direct
nothing in this category has
XLR microphone input and
yet upstaged Vortex CallMe
selectable bitrate.
which lets remote contributors
Barnfind's BarnMini-05 is
get on air without needing
a compact way to combine an
FLASHBACK:
dedicated hardware or software
August 2015 - RS422/485, 4 x GPI and 4 x
Vortex CallMe GPO sources, controllable via
codecs.
an Ethernet/SFP port.
The unit can serve as
an intelligent bridge
between third-party
devices, for example,
Adder XD150FX point-to-point duplex fibre extender
transferring an RS422
Adder's XD150FX is a point-to-point signal or tally between two locations,
duplex fibre extender with USB2.0 or it can control an external optical
that can transmit video at up to 2560 changeover switch (BarnMini-06) in a
x 1600 pixels resolution plus analogue redundancy setup. It is available as a
audio. An integral network port allows standalone unit with a separate PSU,
it to be controlled remotely.
or mounted into the BarnMini BTFAeta Audio's Scoopy+ S is an Mini-16 frame which can house any
audio codec which can be used for combination of 16 BarnMini modules
mobile news gathering or on a desk. with a common PSU. BarnStudio,
In IP mode, packet duplication with Barnfind's control software, can be
interleaving is used for robustness. used to configure and monitor the
Recorded audio files can be BarnMini-05.
transmitted via FTP at high speed
Broadcom's BroadVoice is a family
over 4G/LTE networks or other IP of speech coding algorithms created
links. The codec is N/ACIP compatible. by Broadcom and standardised
Algorithms including G722, MPEG by CableLabs, SCTE, and ANSI for
Layer II, AAC, OPUS and mobile voice-over IP applications in cable
phone calls in HD Voice quality are telephony. BroadVoice is also part
available. An HD-4G option provides of the ITU-T Recommendations J.161
an integrated wireless module and and J.361. To encourage wide-spread
two antennas, supporting HD Voice use, Broadcom is providing both the
and IP transmission over 2G/3G/3G+/ floating-point and fixed-point C source
LTE networks. With a USB mobile key code of BroadVoice on a royalty-free
it can also connect to a second mobile basis under the GNU Lesser General
network.
Public License (LGPL), version 2.1,
Audinate's Dante Virtual Soundcard as published by the Free Software
integrates Windows or Mac computers Foundation.
with Dante audio devices. Up to 64
Comrex' Access 2USB is an IP codec
channels of audio can be recorded designed for use on location.
from a Dante network using third- It can be connected via
party digital audio workstation its internal USB Wi-Fi
software.
modem, or via integrated
Audio Compass' Direct Connect Ethernet ports to wired
is an audio Over IP codec which DSL or broadband cable IP

networks. Either of
its two USB ports
will
accommodate
connections
to
3G/4G cellular data
networks using Comrex-supported
USB devices. Access 2USB also includes
a USB POTS/PTSN modem for use
on analogue phone lines. CrossLock
gives users the ability to manage
and bond multiple data connections
together simultaneously. When a
new network is introduced, Crosslock
will immediately evaluate how much
bandwidth is available and combine
the two connections to take advantage
of all available bandwidth. It can
also monitor each data connection
individually and, when necessary,
apply appropriate error correction,
recovery, or concealment techniques.

Deva Broadcast DB91-RX IP audio decoder

Deva Broadcast's DB91-RX IP audio
decoder is claimed to be compatible
with all of the most popular
compressed audio streams as well as
uncompressed PCM. Incorporating
one main and three backup audio
sources, it switches automatically
between them when the audio is lost,
then returns to the main one when
restored. Users can choose between
IP audio, Icecast, RTP and MP3 Audio
Player. The DB91-RX is accessible via
any standard web browser and can be
used for broadcast, internet radio and
studio to transmitter links.
Digigram's AQORD HEVC is a H.265/
HEVC encoding/recording platform
designed to transport 4K, HD and
SD video over IP networks from one
location to another, as well as UHD

Comrex' Access 2USB IP codec is designed
for use on location

Axel's Streamer Max MkII is a
bidirectional/full duplex device

content distribution to the home. It
compresses the raw video input into
an IP stream output and reduces
bitrates by a factor of 600.
Dolby's Media Decoder software
plays files encoded in any of the
Dolby audio formats used for optical
or online media delivery in sync
with the picture. It is part of the
Dolby Media Producer Suite which is
designed to support all Dolby audio
codecs used in mastering Blu-ray
Disc, DVD-Video, DVD-Audio, and
online streaming and downloadable
formats. The Dolby Media Decoder
supports monitoring of all
consumer listening modes,
including downmixing and
dynamic range control.
It runs locally on a single
computer
to
provide
playback and decoding for
an individual audio room. It also can
decode back to PCM files from any
Dolby channel-based codec.
Elecard's CodecWorks 990 IP-to-IP
transcoding software supports HEVC/
AVC video at resolutions of up to 4K
for applications such as OTT, videoover-CDN and point-to-point video
delivery. It provides six HEVC HD1080
or 10 AVC HD1080 single streams
per CPU. Additional pre-processing
capabilities
include
video
deinterlacing, picture resize and aspect
ratio change.
Guntermann
&
Drunck's
FireWire-800
transceiver
signal
extender extends signals according
to IEEE1394b-2002 protocol. It is also
backward-compatible to IEEE 1394a2000 and -1995. A system consists
of a computer module (transmitter)
and a user module (receiver) and
uses optical fibres to transmit
signals up to 500 metres. The
two identical units can be
interchanged.
Junger
Audio's
C8492B codec offers deembedding/re-embedding
of 3G/HD/SD SDI streams plus

http://www.inbroadcast.com http://www.axeltechnology.com/product.php?id=42 https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201508/index.php#/61/OnePage http://www.adder.com/products/adderlink-xd150fx http://www.deva-ip-audio.com/products/db91-rx http://www.comrex.com/products/access-rack-portable-2usb/

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