Jünger ensures Dolby E quality for ‘The Voice of China’
CHINA: Jünger Audio loudness control and audio processing units have been used extensively to ensure the quality of broadcasts transmitted in 5.1 for the latest series of The Voice of China. Screened by Zheijang Satellite TV, the series has recently completed its fourth season.
Chief audio engineer for the show's 5.1 surround sound production was Lou Wei from CTPC Studio, a division of national broadcaster CCTV. Working on behalf of Dolby China and the production company responsible for The Voice of China, Mr Lou has been looking after 5.1 surround sound and broadcasting since the first series. The format most widely used for surround sound production in China is Dolby E, however, Dolby’s decision to stop making hardware products to monitor this format left a gap in the market. Jünger’s D*AP8 Codec Edition units now incorporate a Dolby decoder as standard so that broadcast engineers in postproduction, DVD and DTV facilities can check the quality of Dolby E, Dolby Digital or Dolby Digital-encoded audio prior to transmission.
‘After a long period of evaluation and testing, we discovered that the features and specifications of Jünger Audio's D*AP8 processors, in particular the D*AP8 MAP Monitoring Processors, matched Dolby E productions very well,’ explained technical director at Dolby International Services (Beijing) Co Ltd, Zhang Yan. ‘They support HD-SDI embedding and de-embedding, as well as Dolby codecs, which is important because most of video equipment that works with Dolby E also supports HD-SDI, rather than the AES interface. Also, thanks to the ability to customise settings, one Jünger Audio processor can work for many different requirements.’
A selection of Jünger Audio equipment was specified for the project, including two D*AP8 TAP Edition audio processors that were installed in the transmission chain and used for Dolby E encoding. A pair of D*AP8 MAP Edition devices including metadata emulation and full loudness metering and logging capabilities were also installed in the programme chain and used for Dolby decoding and metadata emulation. A third D*AP8 MAP was used for Dolby metadata emulation during the music pre-mix sessions, and a 2-channel D*AP4 VAP Voice Audio Processor was used for all vocal balancing and processing, including commentary from the judges and hosts and the singers' speeches. A Jünger Audio Level Magic plugin was used to guarantee overall audio quality and ensure consistent loudness values across the entire 5.1 audio chain.
‘Jünger Audio is one of the few manufactures that supports all Dolby codec hardware solutions, along with specific voice processing and auto up/down mix features,’ said Wu Xiao Dong, director of the audio department at the Zhejiang TV Group Production Centre. ‘The real benefit these units bring to our productions is the ability to tackle Dolby E encoding, Dolby metadata emulation, loudness and vocal voice processing.
‘Jünger Audio has been excellent at providing us with technical training, technical support and even product loans,’ he said. ‘We are about to increase our stock having recently ordered a number of Jünger Audio units, including Dolby codec products for up/down-mixing, for our newly built International TV and Film Production Centre. In the future I can see there being more demand for Jünger Audio products as 5.1 surround sound programme production increases.’