Problem
The Moving Picture Experts Group (MPEG) creates and evaluates standards for motion picture recording and encoding technology, including MPEG-1, MPEG-2, and MPEG-4. Music purchased from iTunes is encoded in the MP4 format. Investigate this format and compare it with the MP3 encoding method discussed in the chapter.
i. Which encoding method offers the best tradeoff between compression ratio and audio quality?
ii. Which requires the most processing power for audio encoding?
iii. Which addresses issues of copy protection, and how are these issues addressed?