02/08/2019
GER: 2wcom has unveiled its IBC2019 line-up which will include the 4audio series.
Compatibility, audio quality, flexibility, simplicity and transmission robustness are the
current top five buzzwords, and the demand on software-based or virtualised solutions is
growing. Broadcasters need solutions that support studio-to-studio, studio-to-transmitter
links and cross-media tasks. The new Linux-based, modular and scalable technological
concept offer a wide range of useful features and support broadcasters taking the challenge
to harmonise old and new technologies and navigate to the next generation of audio.
2wcom’s recently launched 4audio IP series eases the day-to-day work of network operators
and comprises products like IP-4c four-channel codec, IP-8e eight-channel IP/MPEG encoder
and MoIN Multimedia over IP network server. Further variants will be coming soon. Each
device is available as hardware or virtualised software. Its new and well thought-out
technological concept assures outstanding flexibility in application to meet the stated
requirements.
High-level compatibility is important in mixed networks and expanded infrastructures. For
this purpose, all major protocols for internet interoperability like Ravenna, Livewire+, Dante
or SRT are supported. Harmonisation of data exchange between the protocols is achieved by
standards like EBU N/ACIP Tech 3326, AES67, SMPTE ST 2110, SMPTE 2022-7, NMOS and
Ember+. To easily exchange data in mixed networks the solutions offer protocol
transforming, e.g. from Livewire+ to Ravenna when transmitting from a studio site to the
headend.
Eying the upcoming cross-media tasks, customers benefit from an integrated transcoding
feature, which allows the provision of all main codec algorithms, according to requirements.
For high quality and low latency of real-time applications, this can mean PCM to Opus. For
economical needs, like dealing with low bandwidth or uploading files to a station website
transcoding to, for example, AAC profiles (even AAC xHE), Enhanced aptX or Ogg Vorbis is
possible.
The flexible management of recorded audio content allows the combination of individual
audio streams into multichannel streams. Facing, for example, events, this can include audio
from the stage, sideline or grandstand, or even speaker comments. In local studios, the
decoder solutions offer audio/data exchange capabilities for regionalisation of the received
main stream. To ensure the precisely synchronised routing of different streams between
linked networks and a good latency management, Moin, IP-4c and IP-8e support the
Precision Time Protocol (PTPv2).
In addition, all solutions assist the teams on-site in daily operation. In case an event requires
further temporary channels, a corresponding channel activation scalability is possible.

Preconfiguration of hardware and software for operation, management and control is provided
via an easy-to-use web interface and remotely via SNMP, Ember+ or JSON. A SIP phonebook
simplifies intercommunication in networks by enabling to establish connection and to
negotiate codec algorithms as well as protocols. SIP entries and status information
accessible via a web interface and at the hardware grant flexibility to reporters in the field if
WLAN is not available. Supporting DHCP increases the independence of production teams by
permitting the automatic allocation of IP addresses, helping to avoid the need to request an
IP address from the Help Desk.
A multi-layer concept ensures transmission robustness. Hardware devices are equipped with
up to two in or external power supplies. Protection against IP packet loss offers Pro-MPEG
FEC or Reliable User Datagram Protocol, which is more effective and more economical in
means of bandwidth. Further redundancy is achievable by transmitting two streams or
different audio qualities in parallel. In case of interruption of the main stream, IP packet
losses can be recovered by picking them from the second stream or the respective receivers
switch seamless to the next audio quality.
See 2wcom at IBC2019, stand 8.E78.