Advances in video streaming and image rendering technology have greatly improved the quality of high-definition (HD) moving images. Coupled with the growing popularity of home entertainment centers, these factors have become an important driving force for the pursuit of "home theater" experience and the development of portable electronic devices. In addition to high-definition video, high-definition audio (HD Audio) is also introduced, adding a richer audio experience to the expanding world of multimedia entertainment. This article will introduce the three major areas of the high-definition audio market, namely
â— Digital TV-DTV
◠Set-top box – STB
â— Blu-ray DVD
According to the latest report, it is estimated that by 2011, the sales volume of DTV, set-top box and Blu-ray DVD will reach 187 million, 160 million and 116 million units respectively. In addition, other market sectors such as A / V receivers, high-definition camcorders, IPTV and mobile phones will also grow substantially.
However, there are significant differences between standard definition and high definition audio specifications in terms of processing requirements, audio channels, bit rate and accuracy requirements. The many new requirements of high-definition audio systems not only affect all aspects of integrated circuit (IC) design, but also bring major challenges to the realization of high-quality audio for these new devices.
This article will introduce various high-definition media distribution technologies, discuss the design challenges faced by IC designers, and propose solutions and setup methods for efficiently implementing high-definition audio.
Figure 1 7.1 Placement of the speaker system
High-definition audio application opportunities
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