> Shure has tested some thoroughly used pairs of its E1 earphones, which first launched in 1997. And guess what? They measure the same now as when they came off the line. In fact, during the 15 years Shure has been actively selling earphones, its engineers have reached the same conclusion again and again: The sound produced by these tiny transducers during final testing is the same sound you’ll get in a day, in a year, and in five years… unless something goes wrong.
Since there was only one test of one pair with no control, we don't know if the difference is a manufacturing variable, a testing error, or something else.
I don't know enough about statistics, are the differences shown by the author statistically significant?
http://www.wired.com/2013/11/tnhyui-earphone-burn-in/
> Shure has tested some thoroughly used pairs of its E1 earphones, which first launched in 1997. And guess what? They measure the same now as when they came off the line. In fact, during the 15 years Shure has been actively selling earphones, its engineers have reached the same conclusion again and again: The sound produced by these tiny transducers during final testing is the same sound you’ll get in a day, in a year, and in five years… unless something goes wrong.
Since there was only one test of one pair with no control, we don't know if the difference is a manufacturing variable, a testing error, or something else.
I don't know enough about statistics, are the differences shown by the author statistically significant?