Dolby Digital EX Decoder, SHARC

The Dolby Digital EX Decoder library for the SHARC processor is an extension of the Dolby Digital decoding algorithm that adds a center rear channel to 5.1-channel playback, expanding the surround sound experience to 6.1 channels.
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Product Details

Dolby® Digital EX is an extension of the Dolby Digital decoding algorithm that adds a center rear channel or two back channels to 5.1-channel playback, expanding the surround sound experience to 6.1 channels or 7.1 channels. The signals for the center rear channel or the two back channels are extracted from the left and right surround channels and can be sent to one or two speakers placed behind the listener.

Licensing

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Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.

Performance Metrics

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MIPS summary:

Processor
Code RAM (KiB)
Data RAM (KiB)
Constant Data Tables (KiB)
MIPS
Average
Peak
ADSP-21369
68.0
50.5
19.5
50.2
58.2
ADSP-21469
50.1
50.5
19.5
50.7
58.7

  • All figures in the table above refer to one instance of DDEX. “Data RAM” includes stack, scratch, instance state, one single-buffered input buffer containing 960 32-bit words, and seven single-buffered output buffers each containing 256 32-bit samples.
  • MIPS figures indicated in the table have been measured using 48 kHz sampling frequency, 8 output channels (7.1 speaker configuration), optimal memory layout, worst-case input test vectors, and a block size of 256 samples per channel.
  • Heap (or "malloc()") is not used.
  • 1 KiB = 1024 Bytes.

Systems Requirements

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  • Windows XP Professional SP3 (32-bit only).
  • Windows Vista Business/Enterprise/Ultimate SP2 (32-bit only). It is recommended to install the software in a non-UAC-protected location.
  • Windows 7 Professional/Enterprise/Ultimate (32 and 64-bit).
  • Minimum of 2 GHz single core processor, 3.3 GHz dual core is recommended.
  • Minimum of 1 GB memory (RAM), 4 GB is recommended.
  • Minimum of 2 GB hard disk (HDD) space is required.
  • CrossCore® Embedded Studio for Analog Devices Processors.

Related Hardware

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