Lots More Information

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• MPEG.org: MP3 Resources
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• Patent #5,481,614: Method and apparatus for coding audio signals based on perceptual model
• Patent #5,040,217: Perceptual coding of audio signals

Sources

• "Bragging rights to the world's first MP3 player." January 25, 2005. CNETnews.com.http://news.com.com/Bragging+rights+to+the+worlds
  +first+MP3+player/2010-1041_3-5548180.html "Emusic's pitch: Download song -- and own it."
• USA Today.July 30, 2006. http://www.usatoday.com/tech/products/services/2006-07-30-emusic_x.htm
• "Six Tips for Buying an MP3 Player with Flash Memory." http://www.microsoft.com/windows/windowsmedia/devices/flash.aspx
• "Tune-Toting Tech: Get the Most From Your MP3 Player"(PC World). http://www.pcworld.com/howto/article/0,aid,114659,00.asp
• CNET Editors' MP3 Player Buying Guide. http://reviews.cnet.com/4520-7964_7-5134106-1.html
• History of MP3. http://news.com.com/Bragging+rights+to+the+worlds+first+MP3
  +player/2010-1041_3-5548180.html
• History of MP3. http://inventors.about.com/od/mstartinventions/a/MPThree.htm