How MP3 Files Work

When I was a kid the state of the art was 78rpm records that played a song lasting about five minutes or less. I saw the advent of 45rpm record (with the hole in the middle) and long-playing 33rpm (30 minutes or so). When I was about 13 I got a tape player, but it was reel-to-reel.

So the world has changed. Now MP3 players are very popular. But what it MP3. Let's find out, atarting with How MP3 Files Work and following many of the links, including

How CDs Work
    How Analog and Digital Recording Works
          How Bits and Bytes Work (first three sections only)