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Intel touts new "High Definition Audio" standard
Jan. 08, 2004

Intel unveiled a new moniker for its next-generation audio specification for PCs, previously codenamed "Azalia": High Definition Audio. Intel says High Definition Audio -- a name intended to reflect the marriage of advanced audio capabilities in PCs and consumer electronics (CE) -- will be used to implement a range of CE-quality audio, modem, and communications functions in PCs, handhelds, and consumer electronics (CE) devices.

According to Intel, High Definition Audio was developed with broad support from PC and CE manufacturers, codec vendors, software providers, and other industry players. Intel says it provides a flexible, dynamic, cost-effective and stable architecture with headroom for future expansion. For example, High Definition Audio will not only provide an enriched playback experience but is expected to also deliver a better-quality input for voice and communication applications.

Intel attributes the enablement of higher-quality audio partly to an upgraded architecture and increased bandwidth that allows for 192 kHz, 32-bit, multi-channel audio and support for evolving high-quality audio formats. Other contributing factors are increased support for multi-channel array microphones for higher quality input, dynamically allocated bandwidth, and audio device configuration flexibility.

High Definition Audio architecture is designed on the same cost-sensitive principles as AC'97 and will allow for an improved audio usage and stability level for onboard PC audio devices, according to Intel.

The High Definition Audio specification is currently at the Rev. 0.9 level. Intel expects to release the final specification by midyear under royalty-free license terms. The technology will also be featured with Intel's upcoming "Grantsdale" chipset scheduled for release in the first half of 2004.



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