Hi Nick. I posted a few jpg's of resultant complex wave forms from combining several close frequencies in a wave generator program I have. I couldn't find the one I wanted to repost... but this one will do reasonably well. You see inside the main beat a smaller beat of less amplitude that is more intense in strength. This is a resultant wave or beat that comes from the interaction of the other beats combining. It more or less shows clearly that there is a very clear possibility that an identifiable beat exists along the lines of what Virgil and his crowd espouse. Lots of good stuff being written so far... I'd personally like to keep things in the realm of reason and drop the new-age aura of some of the posts.... :) We don't need flashbacks to the mid 60's or get angels involved here. Cheers RicB Quite right RE the evaluation of the sine waves. But whether or not they are harmonic or inharmonic isn't the rallying point. Fourier curves and resultants can be plotted with any emanation of sound be it a piano tone or a kettle drum or a dropped piano. Resultant waves relative to two or more sounds can always be plotted and don't have to line up neatly at all, nor do they have to be periodic. Same is true for all physical forces of push and pull. .... Nick -------------- next part -------------- A non-text attachment was scrubbed... Name: tensecs.JPG Type: image/jpeg Size: 158505 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090314/13da81c2/attachment-0001.jpe>
This PTG archive page provided courtesy of Moy Piano Service, LLC