MP3 compression reaches an 11-fold reduction unattainable by lossless means

Evidence

128 k bit data rate stereo audio that is used for mp3 coding of material on many music download sites, the audio signal has to be compressed by a factor of 11.025! This is considerably more than can be achieved by lossless compression. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2582

Categorization

• CANDY: The ‘11.025x compression!’ fact with an exclamation mark is a fun, tweetable number for understanding mp3.