Free of Charge on Cirrus Logic Audio Processors, BandXpandeR Firmware Improves Frequency Harmonics Lost During Audio Compression, Recording or Transmission

AUSTIN – Sept. 5, 2007 – Cirrus Logic Inc. (Nasdaq: CRUS) has introduced BandXpandeR™ (BXR) firmware, a feature for its line of audio processors that restores much of the lost audio quality during the compression of MP3 audio content or other low-quality recordings.

Through an innovative adaptive algorithm, BandXpandeR™ software regenerates missing high frequency harmonics which can be lost during recording, compression or transmission. When high frequency harmonics are reintroduced, the audio bandwidth of the signal is extended, and brightness, presence and clarity are restored. For example, for the average audio MP3 file that is ripped at around 128 kbps, BandXpandeR firmware can greatly improve audio quality by generating a high-frequency audio signal that is harmonically related to the existing audio signal. Compressed audio content, such as MP3 files, has become ubiquitous with consumers worldwide, yet when listened to outside of their standard headphone or earbud environment, the sound quality is less than stellar. BandXpandeR technology eliminates this problem, allowing consumers to enjoy a higher-quality listening experience of their lower-quality recorded content from their audio/video receivers, docking stations, automotive sound systems or multimedia speakers.

The software is available through Cirrus Logic’s CS485XX, CS4953XX and CS497XX family of audio processors.

“Cirrus Logic BandXpandeR technology is a very compelling new feature for CE manufacturers to differentiate their products by giving consumers the ability to perk up the sound quality from their portable compressed content,” said Terry Ritchie, DSP marketing director, Cirrus Logic. “It’s yet another addition to Cirrus Logic’s growing library of royalty free audio features whereby OEMs can provide market leading capabilities while sustaining a cost effective edge in the market.”

Cirrus Logic Inc.

Cirrus Logic develops high-precision, analog and mixed-signal integrated circuits for a broad range of consumer and industrial markets. Building on its diverse analog mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment and industrial and aerospace applications. The company operates from headquarters in Austin, Texas, with offices in Tucson, Ariz., Europe, Japan and Asia.

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Cirrus Logic, Cirrus, and BandXpandeR are trademarks of Cirrus Logic Inc. All other product names noted herein may be trademarks of their respective holders.

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