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The demonstration is engineered to illustrate the demanding 24-bit, 192 kHz, 6-channel environment required by DVD-Audio or SACD (Super Audio Compact Disk) standards. This type of codec implementation illustrates how PC audio quality is evolving based on current consumer audio technology.

The personal computer has become the home base for the digital living room. From gamers to MP3 lovers to movie buffs, the PC offers unparalleled digital rendering of high-end visual and audio experiences. With the digital living room also containing many consumer electronics, it becomes important for quality standards to be set throughout the space, including the PC. The SigmaTel C-Major demonstration shows the potential for full audio quality on a PC and that SigmaTel is in a position to bring this quality to life.

With the explosion of DVD into the movie distribution business, the 6-channels of audio that DVD brings will eventually become the de facto standard for PC audio entertainment. DVD-Audio and SACD quality is superior to CD audio due to higher sample rates, more resolution, and six full channels of output.

``With new standards such as DVD-Audio and SACD setting a precedent for the home entertainment experience, we can look forward to the moment when consumers enjoy the same benefits on their PCs,'' says Alan Hansford, vice president of marketing at SigmaTel.

SigmaTel's demonstration at the Spring Intel Developer Forum 2002 brings to light the potential of the C-Major audio codec product line. The STAC9460 is a six-channel, 24-bit, full duplex audio codec for use in consumer applications. This codec incorporates SigmaTel's proprietary Sigma-Delta technology to achieve signal-to-noise ratios in excess of 105 decibels.

About Intel Developer Forum Spring 2002:

Advancing the Digital Universe

Learn and share ideas with fellow digital pioneers, including Intel engineers and representatives from other industry-leading companies. This conference focuses on hardware and software development, addressing topics involving the latest technologies and products in desktop and mobile PC systems, servers, workstations, wired and wireless networks, and handheld communications devices.

About C-Major:

C-Major(tm) audio codec solutions provide the best-sounding audio for PCs and digital home entertainment systems. These solutions are built on the foundation of SigmaTel's mixed-signal technical expertise, with a reputation as the market leader in high-quality audio codecs. C-Major offers a wide variety of features for different levels of audio quality, with integrated technologies and software solutions that enable the highest performance at the lowest cost. Also, through SigmaTel's integrated audio software technologies, these solutions are certified for most operating systems, including Microsoft® Windows and Linux®. With a C-Major solution, digital audio can rise to the level of a real world experience.

About SigmaTel:

SigmaTel, a provider of integrated circuit (IC) design, is converting the real world into a digital experience with its innovative mixed-signal solutions for the digital audio and wireless infrared 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 privately held company, based in Austin, Texas, is committed to providing customers with high-performance products along with superior customer service. For more information, visit SigmaTel's Web site at www.sigmatel.com.

Contact:

     SigmaTel Inc., Austin
     Press Contacts:
     Nate Long, 512/381-3913
     nlong@sigmatel.com
     or
     Company Contact:
     Alan Hansford, 512/381-3716
     ahansford@sigmatel.com