From Andrew Hime Sent Fri, Feb 19th 1999, 07:29
> On Wed, 17 Feb 1999, public anemone wrote: > > below the actual tone...i.e. a 30khz tone might give off some low volume 15khz > > harmonics, which you can hear if you have good ears...to see if you can > > actually hear 20+ k tones, you really need to listen to them on good > > A decent and easy test is whether you can tell if the TV is on in another > room with the volume off. TVs produce a tone around 15KHz I think. Hmm. Can't everyone do this? > OK, closer to IDM content: At the end of Ryoji Ikeda's +/- there is a > tone which supposedly a listener becomes aware of only when it stops. > Well, I can hear it the whole time. (Hint: wear earplugs at concerts!) Nah, gotta be hardcore and go deaf.