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Streaming Architecture

The audio on the site is authored on a combination of Windows and Macintosh computers using the streaming formats covered in this book (RealMedia, QuickTime, Windows Media, and MP3). The following sections outline many of the tools and processes used for digitizing, encoding, and publishing.

Formats Used

Wherever possible, multiple formats are used for streaming audio on the site. For the 45-second song clips, 56Kbps dial-up modem users are provided with 32Kbps streams in QuickTime, Windows Media, and MP3, as well as a RealMedia SureStream for up to 64Kbps. Full-length tracks are provided as four multiple bit rate MP3 downloads (24Kbps, 96Kbps, 128Kbps, 192Kbps) and a low bit rate RealMedia streaming file. Live Web casts are typically provided in the format that the partner company prefers. In recent years, the site’s Webmaster has partnered with QuickTime, although previous Webcasts have included RealMedia.


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