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ARM, Ittiam collaborate on Dolby decoder

Posted: 14 Sep 2010 ?? ?Print Version ?Bookmark and Share

Keywords:digital televisions? set-top-boxes? MS10 multistream decoder?

ARM and Ittiam announced the implementation of the Dolby MS10 Multistream Decoder on ARM Cortex-A Series of processors, with optimization for NEON. This implementation comprises Dolby Digital Plus (DD+), Dolby Digital (DD), Dolby Pulse decoder and Dolby Digital Encoder in a single package for next-gen digital televisions (DTV) and set-top-boxes (STB).

Since DTVs and STBs have evolved into multipurpose digital media platforms for the home, there exists an increased need for highly optimized platforms which can meet these demands, particularly high performance audio.

Senior director of broadcast at Dolby Laboratories, Jason Power says, "The availability of Dolby MS10 Multistream Decoder on the ARM Cortex-A9 processor is an important milestone. Televisions and set-top boxes are rapidly evolving into multipurpose digital media platforms for the home. As more customers begin to deploy the Dolby MS10 Multistream Decoder, its availability on the ARM Cortex-A9 processor will help speed the development of compelling new devices that deliver an unparalleled audio experience."

Meanwhile, VP for media processing at Ittiam, Shantanu Jha says, "Support for high definition and high quality bandwidth efficient audio is of prime importance in the next generation DTVs and STBs. Dolby MS10 Multi format decoder enables HD and IP content delivery to the home, while ensuring interoperability with existing home entertainment devices." He adds, "Fully utilizing the NEON engine, our MS10 implementation takes up less than 10 percent of the processor load while offering cost and time benefit in the integration of advanced audio technologies."

The combination of high-efficiency processing in the ARM Cortex-A9 processor, commanding audio standard from Dolby and high level of software optimization from Ittiam have made this possible. This highly optimized technology shortens time to market by simplifying systems through tailored designs which meet increasing market demands. The processing bandwidth demanded by the decoding of a Dolby Digital stream at 48kHz in 5.1 multi-channel mode is just 22 million cycles per second (MCPS) on the ARM Cortex-A9 processor.

Meanwhile, the bandwidth requirement for HE-AAC v2 (5.1) and DD+ decoders is lower than 50 MCPS each. For encoding, the average performance bandwidth needed for the DD 5.1 encoder is less than 70 MCPS, making it very efficient in performing both decode and encode on an easily accessible Cortex-A9 processor based platforms.

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