http://iwk.mdw.ac.at/Forschung/pdf_d...own_BHA_CD.pdf
I posted this (which is a PDF file of the same study) just a few days ago in the "adjustable bridge" thread started by Classical Thump. Of the times I know of, this is at least time #4 for it on this forum. Some people think this is a definitive study, I think it may show something, but it lacks some needed controlls to be really meaningful.
I've never commented on the "data" or the study before. I will this time. The very general statement quoted is very general. Whether one takes the study as meaningful or not, I couldn't help always noticing that the lower frequencies in the graph are not so much affected as the frequencies above 2000 Hz. These are only suppressed slightly. Above 4000Hz is where the real suppression is. So that leaves me wondering, with fundamental notes starting on my instrument at about 31Hz (BB) and going up say 4-5 octaves all the way to 248Hz-500Hz, just what a suppression of partials in the 2000Hz-4000Hz really means soundwise? Is it just a little warmer or what? I think if you have any instrument in the band that plays a simultaneous note a few octaves above you (like when a guitar strums the chord you are playing a note from), the frequencies in the 2000-4000Hz range from the higher voiced instrument are going to mask any tone you are getting in that frequency range. So if you are playing with a full orchestra or even a small combo, the noticeable difference alleged here is going to disappear.
I could believe you would notice that more on arco solo work also, since arco usually emphasizes the higher partials more, so the "results" seem reasonable, but the proof is thin. Beware of "almost" science. There are two many variables in this study and not enough controls.
FYI, I use a massive bridge. Mainly because I haven't seen the need for adjusters yet. If I thought I needed them I would use them. The maple DiLeone's look pretty fat but I bet they are pricey....
Study? 
