Wednesday, November 30, 2016

CSP Unit 2 Stage 1 - Question #3

Shakespeare’s complete works have approximately 3.5 million characters. Which is bigger in file size: Shakespeare’s complete works stored in plain ASCII text or a 4 minute song on mp3? How much bigger?

- It depends on the MP3 quality, the rule of thumb for MP3 audio is that 1 minute of audio takes up about 1 megabyte. Therefore, it would be around 4 MB instead of 7.68 MB and the 3.5 MB of Shakespeare's work would still be a smaller file size by 0.5 MB less. A high-quality 4-minute MP3 will have about 7.68 MB, vs the 3.5 MB for Shakespeare's text. At minimal music quality, the MP3 is only slightly larger than Shakespeare, at 3.84 MB. Much higher MP3 compressions are possible, but not commonly used for music.
 

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