Why are sine waves considered "pure" tones? Why do we consider sinusoids the building blocks of periodic functions? [more inside]
posted on Jun 28, 2008 - 35 answers

Whenever I yawn while listening to music, the music becomes not only distant, but out of tune. Why is that? My mother says it happens to her as well.
posted on Apr 12, 2008 - 11 answers

headphone choice for non symmetrical hearing: my father is mostly-deaf in one ear. He wears an in-ear hearing aid that works well. He would like to find the following... [more inside]
posted on Oct 24, 2006 - 4 answers

I've lost my hair, I've lost my youth and now it's time for my hearing to follow. recommend a stereo system, please. [more inside]
posted on Sep 4, 2006 - 14 answers

Has anyone had any experience with buying earplugs for use at concerts? [more inside]
posted on Jun 9, 2005 - 27 answers