製品概要

機能と利点

  • Transport Stream: Ogg Vorbis bit stream compliant to the Vorbis I specification
  • Output Status: Sampling rate, average and maximum bit rates, number of channels and bibliographical information
  • API: Original open source API
  • Error Codes: Reports up to 14 unique error codes
  • Compliance: Tested against the Tremor low memory PC build
  • Code base origin: Tremor low memory version from Xiph.org
  • Reference Code Revision #: Xiph svn revision 13184
  • Certification: N/A
  • Framework dependencies: None- no dependencies on processor peripherals or registers
  • Release Format: Object code and source code tree
  • Input format: Vorbis bit stream encapsulated in Ogg container
  • Output format: 16-bit PCM in interleaved format
  • Output buffer samples per block: Variable
  • Sample Rate: All sampling frequencies specified in the Vorbis I Specification (i.e. 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48kHz )
  • Bit Rate: All valid bit rates up to 500kb/s
  • Multi-channel: Multi-instancing capable

製品概要

Ogg Vorbis is a royalty-free, general purpose lossy audio compression codec supported by the open source community. The codec supports 16-bit stereo audio up to 48kHz and 500kb/s. The audio quality is comparable to that of MPEG-4 AAC.

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VisualDSP++ 5.1

VisualDSP++は、Blackfin、SHARC および TigerSHARC プロセッサ向けの、イングル・インターフェースでプロジェクトの効率的な管理を可能とする開発・デバック環境ソフトウェアです。

ライセンス

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.


パフォーマンス測定基準

MIPS summary:

Code memory (KiB) Data RAM (KiB)  Constant Data Tables (KiB)
  MIPS
Average
 Peak 
 30.7
  44.7
  43.3
  40.6
  50.1

  • MIPS measured using Fs = 48kHz, 128kb/s, optimal memory layout, worst case test vector, running on a BF533.
  • Code compatible across all BF5xx processors, with silicon anomaly workarounds implemented based on BF533 Silicon Revision 0.3 and later.
  • "Data RAM" for one instance, includes Stack, Scratch, Instance/State, single Input and Output Buffers. The exact amount of Data RAM needed is dependent on the bit stream.
  • Input buffer size is 2K bytes and output buffer size is 6K bytes.

システム条件

  • 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). It is recommended to install the software in a non-UAC-protected location.
  • 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.

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