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SigmaTel Unveils First-Ever Multi-Channel Windows Driver Model (WDM) for PC Host-Based Audio

New Drivers Support Surround Sound on the PC Without a Hardware Controller, Enhancing User's Experience

AUSTIN, Texas, July 10 /PRNewswire/ -- SigmaTel, Inc., an Austin-based, leading provider of high-performance integrated circuits (ICs) for high-speed broadband communications, wireless and PC audio solutions, announced today the creation of the first-ever, multi-channel WDM (Windows(TM) Driver Model) host- audio driver for the PC, further establishing the company as a world leader in audio solutions. The new driver enables four- and six-channel movie theater- quality audio for PCs.

SigmaTel's multi-channel WDM is the first driver capable of playing two-, four- and six-channel audio. The WDM driver format for audio is a requirement for obtaining the various Windows logos from WHQL (Windows Hardware Quality Labs). It is also the first WDM driver to allow today's software to support surround sound on the PC, and will be a major component of high-end computers targeted at the games environment and for DVD movie playback.

``Customers told us that this new WDM will have an immediate impact on PCs this year because it is the software behind the hardware that is being rolled out for the Christmas season,'' said Alan Hansford, vice president of marketing for SigmaTel. ``SigmaTel prides itself on being the first-to-manufacture new products in its field, and this is only the latest innovation from our talented staff. This latest release is a second generation offer based on our original two-channel, host-audio drivers that were released early last year.''

SigmaTel's new multi-channel WDM host-audio driver allows original equipment manufacturers (OEMs) and audio developers to develop higher quality end products. The multi-channel WDM host-audio driver is in production and began shipping in June 2000. Interested motherboard developers should contact SigmaTel at mailto: hostaudio@sigmatel.com.

About SigmaTel:

SigmaTel is a leading provider of integrated circuits that bring high- speed broadband communications, wireless and PC audio solutions to the home and small business markets. Since its inception, SigmaTel has built a strong reputation as an innovative developer of mixed-signal ICs, by being first to market with several highly integrated designs. The company is committed to providing customers with high performance products and superior customer service. SigmaTel is a privately held company based in Austin, Texas. For more information on SigmaTel, visit its Web site at www.sigmatel.com.

Press Contacts: Company Contact: Katie Olivier Alan Hansford Senior Account Executive VP Marketing Shelton Communications Group SigmaTel 972.239.5119 512.381.3716 kolivier@sheltongroup.com ahansford@sigmatel.com

SOURCE: SigmaTel, Inc.

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