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Dolby Virtual Speaker (DVS)

Dolby® Virtual Speaker is a propriety algorithm from Dolby Laboratories intended for creating realistic 5.1 surround effects with as few as two speakers. The Dolby Virtual Speaker uses the directional and phase characteristics of the audio data as well as room-modeling technologies to simulate a 5.1 Virtual surround sound reproduction system. Dolby Virtual Speaker can also produce ...More

Dolby Virtual Speaker (DVS)

Product Description

Dolby® Virtual Speaker is a propriety algorithm from Dolby Laboratories intended for creating realistic 5.1 surround effects with as few as two speakers. The Dolby Virtual Speaker uses the directional and phase characteristics of the audio data as well as room-modeling technologies to simulate a 5.1 Virtual surround sound reproduction 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."

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Features

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Functions

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Performance Metrics

MIPS summary:

Code memory (KiB) Data RAM (KiB) Constant Data Tables (KiB) MIPS
Average Peak
7.04 17.4 1.96 29.3 29.9
  • MIPS measured using Fs = 48 kHz, optimal memory layout, worst case test vector, 5.1 input channels and 5 output channels running on a ADSP-BF537.
  • Code compatible across all BF5xx processors.
  • "Data RAM" for one instance, includes Stack, Scratch, Instance, State, six single-buffered input buffers and five single-buffered output buffers, each buffer containing 128 16-bit samples. The number of input samples to be processed per channels is configurable and affects the overall memory requirements of the module.

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Applications

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Requirements

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Availability and Licensing

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

Contact your ADI Sales Rep to request this code. If you need to find a Sales Rep in your area, please visit the Sales & Distributor Map/Listing.

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