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Cirrus Logic introduces the advanced digital TV audio processors CS48520 and CS48540 to help flat-panel TV manufacturers increase sales and market share through product differentiation. These new digital TV audio processors are complete audio post-processing solutions with home theater sound quality and functionality that help manufacturers meet the growing consumer demand for higher audio performance.
Keith Cheney, vice president and general manager of embedded products at Cirrus Logic, said: "Consumers love the display of new flat-panel TVs, but few people are satisfied with their audio capabilities. If manufacturers of digital TV products can serve consumers Providing a better audio experience will help its products stand out. Manufacturers are increasingly turning to audio digital processor ICs, such as our digital TV audio processors, to improve them faster and easier. Digital TV audio to provide the sound quality of home theater."
The CS48520 and CS48540 ICs offer a wider selection of audio features, providing OEMs with cost-effective and easy-to-design solutions that deliver better audio capabilities to consumers and optimize the entire audio system for flat-panel TVs. The CS48520 supports 4-channel audio input/output, making it ideal for 2-channel or 2.1-channel stereo applications, while the CS48540 supports 8-channel audio input/output for multi-channel systems. The ROM supports audio algorithms without the need for external storage components. Cirrus Logic also offers a PC-based graphical programming tool, DSP Composer, that allows system designers to set audio performance metrics faster and better.
The consumer features that can be achieved with the CS48500 series include:
• Multi-channel and virtual surround sound. The CS48520 and CS48540 support a wide range of industry-standard audio algorithms that extend stereo audio or matrix-encoded stereo audio into multi-channel audio and convert multi-channel audio to stereo audio while preserving surround sound. Other standard audio algorithms produce extended, spatially segmented stereo audio that increases the clarity of the session while providing bass boost. Algorithms support AudistryTM by Dolby®, Dolby® ProLogic® II, Dolby® ProLogic® IIx, Dolby Virtual Speaker® II, Dolby Headphone® II, DTS Neo:6TM, SRS WOW, Circle Surround II®, SRS TruSurround XT®, SRS TruSurround HD, SRS TruBass, BBE, BBE Viva2, BBE Viva+, BBE Mach3Bass and Cirrus Original Multichannel Surround.
• Dynamic volume adjustment. This powerful audio feature helps TV viewers to order the volume they like, as well as over-the-top merchandise ads that appear suddenly when watching TV shows, volume differences when changing channels, and changing sources (for example, DVDs) Automatic volume adjustment for players, set-top boxes, etc.).
• Enhanced listening mode. This feature helps OEMs provide users with audio presets and effects for home theater, including movies, news, sports, music and night mode. For example, the news mode can use the session enhancement program to adjust the audio to improved speech intelligibility; while the night mode can limit the high volume audio channel and reduce the bass output, such as sleeping in other family members when playing the action pieces of the movie soundtrack. Comfortable appreciation in case of.
• Bass management. This feature helps OEMs manage their TV's main speaker audio more efficiently with potentially limited low-frequency capabilities by connecting low-frequency audio to an external subwoofer that faithfully reproduces bass content.
• Speaker and speaker adjustment. This feature helps OEMs optimize audio performance by adjusting many of the audio response components of a particular speaker and speaker configuration in a digital TV system.
• Automatic room equalization. This feature calibrates the audio frequency response of the TV speakers to improve the sound quality of the listening area, and the adjusted room acoustics can change the overall sound quality (eg hardwood floors, mirrors, curtains, furniture, etc.).
• A/V sync delay. This feature makes audio and video more synchronized, as video processing in digital TV systems can cause this delay. The audio delay per channel can be as high as 200 milliseconds.
The CS48500 family is a member of the Cirrus Logic line of high-performance audio processors, including the CS49530, the flagship audio processor for Cirrus Logic's audio/video receiver applications.
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