Blu-ray Disc Codecs

Products » Audio DSP » Blu-ray Disc

For Home Entertainment: Blu-ray Disc, DTV, Set-top Boxes, and A/V Receivers

The HiFi Audio DSPs are ideal for Blu-ray Disc, DTV, set-top boxes and high-end home theater receiver SOCs. HiFi Audio offers significant cost and time savings with a huge list of pre-ported audio codecs and a programming model that easily enables full development in C.

HiFi EP's architectural enhancements significantly improve DTS Master Audio decoding and tolerance to high external memory latency. With HiFi EP, single-core Blu-ray Disc SOCs can easily be implemented in 65GP with additional MHz to spare for other audio functions.

Blu-ray Disc unleashes a new level of entertainment in the home with up to 7.1 channel audio, and video that surpasses the quality of standard DVDs by up to 6x. New features include Secondary Audio to support interactive content and director's commentary, higher resolution compressed audio streams for enhanced audio reproduction, and lossless audio formats that provide bit-for-bit identical reproduction of the original studio master in up to 7.1 channels.

New codecs have been developed and introduced by Dolby and DTS to support these audio capabilities - Dolby TrueHD, DTS-HD High Resolution Audio and DTS-HD Master Audio. The combination of increased codec complexity and support for simultaneous Secondary Audio decoding and mixing of decoded Primary and Secondary and effects audio has resulted in a huge step function increase in signal processing compared to the DVD standard.

HiFi Audio meets the challenge with extremely efficient implementations of all the mandatory and optional Dolby and DTS codecs, enabling the development of area and power efficient single audio DSP core-based Blu-ray Disc SOCs.

Blu-ray

Blu-ray Disc Audio - The Most Demanding
Consumer Audio System

Worst Cast HiFi 2/EP Performance on Blu-ray Disc Algorithms

Audio Function Worst Case Performance on HiFi 2 Worst Case Performance on HiFi EP
Primary Audio: DTS Master Audio 24.5 Mbps 5.1 192 kHz 175 MHz 115 MHz
Secondary Audio: DTS-LBR (DTS Express) 256 kbps 5.1 48 kHz decoding 63 MHz 63 MHz
Upsample, mixing, post-processing 48 MHz 48 MHz
Downsample, Downmix, S/PDIF Output: DTS/AC-3 5.1 48 kHz encoding 76 Mhz 76 Mhz
Subtotal (ideal memory) 362 MHz 302 MHz
Allowance for cache/bus latency 100 cycles memory delay 100 cycles memory delay
Total 541 Mhz 386 MHz

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