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Dolby Virtual Speaker

Product Details

Dolby Virtual Speaker is a proprietary algorithm from Dolby Laboratories intended for creating realistic 5.1 surround effects with as few as two speakers. Dolby Virtual Speaker uses the directional and phase characteristics of the audio data as well as room-modelling technologies to simulate a 5.1 virtual surround sound reproduction system on a two-speaker system. Dolby Virtual Speaker can also produce surround effects from stereo sources when used in combination with Dolby Pro Logic II. This module can only be shipped to pre-approved Dolby "qualified recipients."

Features

  • Output Status: Number of output channels, number of output samples per channel, sample rate and output channel configuration
  • API: C callable 'Push' API
  • Error Codes: Reports up to 3 unique error codes.
  • Code compatible across all ADSP-2136x and ADSP-2146x processors
  • Compliance: Dolby compliance/certification requirements for Dolby Virtual Speaker.
  • Code base origin: Dolby Virtual Speaker Implementation Development Kit, Issue 2.0
  • Reference Code Revision #: Revision 2.0
  • Framework dependencies: None. No dependencies on processor peripherals or registers.
  • Release Format: Object Code with source code wrapper
  • Input format: Floating-point 32-bit samples, ranging from -1.0 to 1.0, non-interleaved.
  • Output format: Two channels (Stereo) 32-bits floating-point representation, non-interleaved.
  • Output buffer samples per block: Depends upon input block size which is configurable by user.
  • Sample Rate: All sampling frequencies specified by Dolby Virtual Speaker (32, 44.1 and 48kHz)
  • Multi-channel: Fully re-entrant and multi-instancing capable

Product Downloads

System Requirements

  • 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.

Related Software 

VisualDSP++ 5.0 and Latest Update

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EngineerZone Support Community: Latest Software Modules, Starter Kits and Software Development Kits

Availability and Licensing

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.

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