I think the answer has to do with whether one is receiving high or low amplitude vibrations and I think where one's ear is aimed in relation to the origin of a given wave source (the soundboard and/or the various deflection surfaces -- lids, sides and whatnot) determines which wave makes it into one's ear. There are several very interesting webpages on the topic, one of them at The Physics Classroom <http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l1a.html>. > -----Original Message----- > From: owner-caut@ptg.org [mailto:owner-caut@ptg.org]On Behalf Of Richard > West > Sent: Friday, October 12, 2001 12:26 PM > To: College & University Technicians > Subject: silly question > > > Hello All, > > It's Friday for whatever that's worth, but I thought it might be a good > day to ask a silly question that's been rattling around my head for > years (along with that loose screw that's up there, too) > > Why is it that head position makes such a difference when you're > tuning. Sometimes if I have trouble picking out a beat, I just move my > head, and the sound becomes clearer. Also, I find I hear a lot better > standing up. When I use the machine, it makes a difference where I put > the mike. The machine has trouble reading some notes but if I move it, > the reading is clearer. What is it about sound waves that creates this > effect? Are there nodes in the air in addition to nodes on the string? > There's probably an obvious answer, but I've never looked it up or heard > it. I'll leave it to more educated personages than I to give me the > answer. Thanks in advance. > > Richard West > University of Nebraska _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
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