For real fun, try looking at an LED alarm clock while playing different pedal tones. On some notes the numbers pulse, and on other notes you can see the order that the machine draws the lines that it uses to make numbers. Electricity in the US operates at 60 hertz (cycles per second), and at the lower frequecies, your face literally gets out of phase with the pulsating picture (much like "beats" when your pitch gets out of phase, or tune if you prefer). This does not happen, however, with some computer moniters or LCD TVs operating at 120 hertz clock speeds.
Respectfully Submitted, Scott Young > To: horn@music.memphis.edu > From: vindumu...@mac.com > Date: Fri, 29 May 2009 16:45:25 -0400 > Subject: [Hornlist] Playing under a ceiling fan-not too horn related > > Ralph Hall wrote: > > "As a side issue, playing whilst watching TV makes the picture appear > to 'frizz' and vibrate." > > > Actually, Ralph, if I'm not mistaken, that is the result of your > eyeballs shaking around in their sockets. I'm not kidding. It > doesn't have anything to do with the soundwaves generated by your > horn effecting the electrical appliances in the room. Ask someone > else in the room to look at the television and they won't see the > "frizz" that you're seeing as you play. Try playing a tuba and the > distortion will appear greater (I've done this.) Bigger eyeball > shaking. The phenomenon can also very noticeable if you're looking at > a computer screen as you play. > _______________________________________________ post: horn@music.memphis.edu unsubscribe or set options at http://music2.memphis.edu/mailman/options/horn/archive%40jab.org
