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      Decode 5.1 channel

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      Output Encode 5.1

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      Decode 5.1 ch

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      Decode 7.1 ch

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      Decode

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      Decode 2, 7.1 ch

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      Decoder 2, 7.1 ch

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Dolby TrueHD Decoder for Xtensa HiFi 2 Audio Engine

Tensilica’s Dolby TrueHD Decoder Application PackageDolby Logo

Tensilica offers the Dolby® TrueHD decoder for its HiFi 2 Audio Engine. Dolby TrueHD is the ultimate high-definition audio experience for next-generation entertainment, delivering warm, realistic and enveloping sound from the Blu-ray Disc format.

Dolby TrueHD is a 100 percent lossless audio coding technology that delivers spacious, highly realistic sound effects and great dynamic range that allows viewers at home to experience every detail of the original recording for a deeply involving listening experience. Dolby TrueHD can support up to 14 channels of surround sound; as currently implemented on high definition Blu-ray Discs, Dolby TrueHD supports up to eight (7.1) channels of pristine audio playback. Dolby TrueHD bitstreams may be decoded in the player or transported by HDMI (version 1.3), a single-cable digital connection to high-definition home theater systems, for decoding and playback.

In addition, Dolby TrueHD provides support for all of the new speaker locations designated by the Society of Motion Picture and Television Engineers for digital cinema applications (SMPTE 428-3-2006).

The decoder is a fixed-point implementation written in C and available in object code. Included documentation describes how to incorporate the decoder into a system. System developers can integrate a Dolby Digital Plus decoder into an SOC without the need for additional optimizations or software development. The same Xtensa HiFi 2 Audio Engine is used for other Tensilica audio codecs, enabling the development of highly optimized multi-standard audio SOC designs.

Feature Summary

  • Supports up to 14 channels of surround sound
  • Supports up to eight (7.1) audio playback channels
  • Fully compliant with Dolby Laboratories compliance testing

Specifications


Decoder
Clock Rate*
Code Size (ROM)
Table Size (ROM)
Total RAM**

7.1-channel 9.6 Mbps,
48 KHz

48 MHz 13 Kbytes 5.4 Kbytes 16 Kbytes

* Average MHz required for single-cycle memory.
** Total RAM includes persistent, stack and scratch.
PRODUCT RESOURCES
HiFi 2 Audio Engine Product Brief
Diamond Standard VDO Product Brief
HiFi 2 Audio Engine White Paper
Diamond 388VDO Video Engine White Paper
PRESENTATIONS
Diamond 388VDO Dual Core Video Decoder/Encoder (2007 Processor Forum)
Low-Power, Low-Overhead, High-Fidelity Digital Sound for SOCs (Net Seminar)
ARTICLES
Tensilica Makes Music by Microprocessor Report
Anatomy of a Hardware Video Codec
Creating multi-standard, multi-resolution video engines using configurable processors
SONiVOX Ports EAS Portable Audio Package to Tensilica’s HiFi 2 Audio Engine
HiFi Audio Design Wins
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