After a thorough process of evaluation that incorporated both measurement and listening test, SBS Broadcasting in The Netherlands has installed Jnger Audios LEVEL MAGIC solution for loudness processing across all of its television channels.
SBS was prompted to investigate loudness control in order to comply with the new EBU R128 loudness recommendation, which was formally announced by the EBUs PLOUD Group at the IBC Convention in September, 2010.
Josbert van Rooijen, Manager Broadcast & IT at SBS, says: Complying with R128 is a complicated, step-by-step process. Proper and clean switched loudness processing is of vital importance if SBS is to be able to combine old style programming with content that is already compliant to the new paradigm. Switching needs to be carried out in a smooth and seamless manner, without changing the overall audio impression. In our opinion, Jnger Audios solution complies with this requirement.
SBS has invested in a Jnger Audio modular C8000 solution that incorporates a suite of DSP and I/O interface cards enabling it to completely integrate workflow for managing surround sound and Dolby coded 5.1 audio signals in production, ingest and playout. These include HD/SDI De-embedding/Embedding with VANC, Dolby E resynchronisation with in-built video delay and Dolby Metadata generation. Because of its modular nature, each C8000 system can be designed to suit the individual needs of each broadcaster. Customers can choose the exact type and amount of input and output interfaces and processing they require for their particular facility.
All C8000 systems include Jnger Audios renowned LEVEL MAGIC¢ adaptive loudness algorithm, which is based on a Multi-Loop dynamic range control principle. This enables slow changes (AGC), fast changes (Transient processing) and Look Ahead peak limiting to be handled simultaneously, thus offering level management with exceptionally high audio quality and without coloration, pumping, breathing, distortion or modulation effects.
Our main reasons for choosing Jnger Audios solution were its outstanding performance and amazing ability to control huge loudness jumps, while still preserving the essential natural sounding properties of the audio content without audible colourisation and distortion, van Rooijen adds. We also appreciated the clear user interface, the versatility of the system, the GPI programming functions and the variety of configurable options within the C8000 concept.
The C8086 solution added practical advantages by combining HD-SDI interfacing, Dolby AC-3 encoding, video delay and options to process metadata in a one rack system. It was also very competitively priced. Furthermore, the outstanding support of Jnger Audios product manager Inka Danielmeyer was very much appreciated, as was the fast and accurately assistance offered by her colleagues Manfred Ottenbreit and Kai Werner.
The process of loudness normalisation is an historic breakthrough in television broadcasting and one that requires adaptations to the whole broadcast chain, from production through to consumer equipment in the home. It also sets completely new requirements for processing equipment in the studio.
van Rooijen says that, like many broadcasters, SBS is now in a transitional phase where the processing equipment still has to deal with huge loudness jumps between programmes stored on the play-out server and in the archives.
It is extremely difficult to design a processor that can handle that well without giving a completely different impression once new material is passed-through the chain in the alternative transparent mode, he explains. During the assessment, Jnger Audio made some adaptations to its software base on our test experiences. This changed the assessment into a cooperative process which yielded significant advantages. Jnger Audio was able to act very quickly on our comments and have developed a solution that does the job remarkably well. SBS is already looking forward to a new software version that will be tuned to the next phase of the implementation, and we expect this to be ready when we need it.
Commenting on the SBS installation, Peter Poers, Managing Director of Jnger Audio, says: We are very glad that such a highly respected broadcaster as SBS has adopted our leveling solution and that we have been able to work together to incorporate their feedback and modifications. The fact that SBS has chosen LEVEL MAGIC for its playout is testament to the outstanding audio quality of our algorithm. Our next step is to give them R128 complaint audio output control, which is another project that is underlining our leading position in supplying world-class audio control solutions.