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Synopsys has announced the availability of an optimised version of the Dynamic Resolution Adaptation (DRA) decoder software for the Designware ARC Sound AS211SFX and AS221BD audio processors.

The Designware ARC Sound DRA decoder supports the Chinese National HD audio standard that is included in the Blu-ray Disc specification and is the first optimised implementation available as part of a commercial audio IP solution.

The AS211SFX and AS221BD audio processors require 18MHz to run the optimised DRA decoder for Chinese digital broadcast (2.1 channel) and 134MHz for Blu-ray Disc (7.1 channel).

The Designware ARC Sound DRA codec, together with the Designware ARC Sound audio processors enable OEMs and system-on-chip (SoC) designers to deliver an enhanced, high-quality, high-definition audio experience in a range of applications used in Chinese digital broadcasting, digital home theatre systems, internet streaming and personal media players.

The single-core AS211SFX audio processor incorporates a dual-MAC DSP optimised for audio processing that minimises the bandwidth and power consumption needed to support the full range of audio applications.

The Designware ARC Sound AS221BD dual-core audio processor is optimised for HD audio SoCs targeting Blu-ray Disc and High-Definition, Multi-Channel digital audio streaming applications.

These configurable audio processors are easily integrated and can be optimised for each instance on an SoC.

The Designware ARC Sound solution also includes a media software framework that provides a unified software interface to the library of Designware ARC Sound audio codecs and audio post-processing functions.

Synopsys’s Designware ARC Sound IP is capable of delivering studio-quality audio using Synopsys’s Sonic Focus post-processing technology while simultaneously supporting long hours of playback time using Energy Pro active power management.

DRA is an audio coding and decoding technology used to implement the Multi-Channel Digital Audio Codec Specification, which was approved as China’s electronic industry standard (SJ/T11368-2006) and National Audio Standard (GB/T 22726-2008).

DRA is included in the Blu-ray Disc BD-ROM specification and was selected as the audio coding format for Chinese Multimedia Mobile Broadcasting (CMMB).

The Designware ARC Sound audio processors and DRA decoder is said to be the first commercial IP solution to support this standard, enabling 24-bit precision for all channels along with multichannel configuration support, including stereo and 5.1/6.1/7.1 surround.

They also provide support for various sample rates from 8 kHz to 192 kHz.

The Designware ARC Sound IP solution enables OEMs and SoC designers to implement HD audio in their designs, providing extended audio capabilities in applications supporting the requirements of the Chinese market.

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