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24/03/2009

New Dolby Multistream Decoder Bridges HE AAC And Dolby Digital Plus Standards

Dolby Laboratories has announced that they new Dolby Multistream Decoder, a licensable multiformat audio decoding technology that supports Dolby Digital Plus and Dolby Pulse in a single package for next generation HDTV's and set top boxes.
In Europe, various industry groups such as Digital Video Broadcasting, the European Broadcasting Union and DIGITALEUROPE (formerly known as EICTA) have recommended Dolby Digital Plus and HE AAC as the audio coding systems for next-generation broadcast transmissions. In addition, individual national forums have specified these audio systems for their respective HD formats. Dolby Digital Plus decoding brings premium audio support and full compatibility with existing Dolby Digital broadcasts. Dolby Pulse (Dolby's implementation of HE AAC) can extend the Dolby experience to an even wider range of bandwidth constrained services and new online opportunities.
The new decoder, also known as the Dolby MS10 Multistream Decoder, decodes both Dolby Digital Plus and HE AAC audio and therefore can assist manufacturers in meeting new MPEG-4 terrestrial receiver specifications in several European countries, including Denmark, France, Ireland, Italy, Norway (HE AAC only with transcoder), Spain, Sweden and the United Kingdom. It also enables new audio mixing options to enhance presentation for viewers with vision impairments, as required or recommended in several European countries, including Sweden and the UK.
Tom Daily, Senior Director of Marketing, Broadcast Segment at Dolby Laboratories, said: "We're confident that the Dolby Multistream Decoder will not only aid manufacturers in reducing the cost and complexity of integrating audio technologies into their TVs and set top boxes, but it also will aid greatly in simplifying product development and testing."
Other key benefits of the Dolby Mainstream Decoder include:
  • Full compatibility with Dolby metadata and consumers' existing DVD home cinema systems with all Dolby and HE AAC transmission formats.
  • Full multichannel support (transcoder) for Dolby Pulse in addition to Dolby Digital and Dolby Digital Plus decoding and conversion - one Dolby Digital output for all input formats.
  • Support for audio description services delivered "receiver-mix" style using two simultaneous instances of Dolby Pulse, Dolby Digital or Dolby Digital Plus decoders, respectively - all for the price of a single decoder instance.
  • Support for multiprogram Dolby Digital Plus streams (main and associated audio delivered in the same audio stream).
  • Ability to decode AAC, HE AAC v.1 and HE AAC v.2 bitstreams.
Dolby MS10 Multistream Decoder implementation and system kits are available starting today. Further information is available at: www.dolby.com.
(KMcA/BMcC)
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