Cirrus Logic Inc. (Nasdaq: CRUS) has introduced the world’s first audio DSP processor that features Dolby Laboratories’ Dolby® Volume sound-leveling technology for digital television applications. In volume production today, the fixed-function CS48DV2 is a two-channel processor that supports Dolby Volume technology, a breakthrough technology that eliminates consumer frustrations with continually variable volume levels.
Dolby Volume technology enables consistent volume levels from television content, such as blaring commercials, or while switching channels. This breakthrough technology allows listeners to set their preferred listening level and have it stay that way, regardless of the source or content. Cirrus Logic is planning additional audio DSPs that will incorporate Dolby Volume technology for a wide variety of consumer electronics products, such as audio/video receivers, home-theater-in-a-box systems, and stereo audio systems.
“Dolby Volume technology is without a doubt one of the must-have features for 2008 digital television designs, and with the CS48DV2, Cirrus Logic can help TV manufacturers offer this quickly, easily and with minimal cost,” said Terry Ritchie, DSP marketing director, Cirrus Logic. “Analyst studies suggest that incorporating Dolby Volume technology into DTV products can give manufacturers a significant edge against their competitors – precisely because it’s solving a problem that’s been a real source of frustration for consumers.”
The foundation of Dolby Volume technology is a sound processing engine that applies decades of Dolby research into how humans actually perceive and process sound. While other products have attempted to address inconsistent volume in the past, Dolby Volume technology is an innovative solution to the problem and represents a more sophisticated approach built around the way people hear.
Dolby Volume technology is comprised of two powerful volume control technologies: Modeler and Leveler. Leveler continually measures the perceptual loudness of audio content and applies multiband gain modifications using its perceptual processing engine. This allows audio from multiple sources to have the same perceived loudness level.
Due to the nature of human hearing, many subtleties of the content can be lost when listening at low audio levels. The Volume Modeler technology continually analyzes and modifies the audio depending on both the content and the playback level, restoring it to the way it would be perceived at the reference playback level. The result is improved imaging, intelligibility and audibility of the audio content.
Pricing and availability
The CS48DV2, which is available in a 48-pin QFP package, is currently in volume production and is priced at $4.78 in 10,000 quantities.
About 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 and signal-processing 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.
Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.