Chiff and Fipple Forums

Jerry Freeman will glue a small square of material on the underside of the blade on a Generation head. It serves two purposes. It shortens the window by bringing the leading edge of the blade closer to the windway, similar to Richard's modification. It also lines up the bottom of the blade closer to...

I don't think a telescoping body made of thin-wall brass tubing would introduce enough of a taper to make a whole lot of difference in the tuning. You might get a bit more of an impact if you made a section at the head end out of narrower tubing, with the rest of the body cylindrical. But that would...

Well, at least we can say that window size isn't a big factor, since the Howard (flat) looks to have the smallest window; the MK Pro (sharp) may not have the largest window but it looks to have the longest. If the silver insert visible below the MK Pro window extends some distance down the tube, it ...

That is informative. Definitely a strike against my hole-size hypothesis. I'd appreciate the corresponding comparison photo of the head ends. It wouldn't tell us what's inside, but it might give some clues. It could also show relative window sizes, which may also come into it. I know that a very sma...

I was taken aback by the "Comparison : Kerry Optima / Nightingale" discussion that some cylindrical whistles can be sharper in the second octave than the first. I wasn't aware that was possible. I know, I should get out more. If most tend flatter but some are sharper, it would suggest we ...

Maybe the Canadians are different; for all we have in common, they continually surprise me. In any case, you're super-unlikely to hear either "infra" formation in my stomping grounds; in normal circumstances they would only elicit blank stares, and mine among them. No difference here. You...

Thank you, Terry for the new numbers. After putting the old Gen numbers through the mill, the Strouhal number plots don't look too much different from those with the Feadog head. The graph of Strouhal number as a function of phase angle comes even closer to a straight line than the earlier numbers. ...

Ok, my turn to apologize for disappearing. I haven't forgotten about this thread, although it would have looked that way. I have a request for a bit more information about the old Gen geometry: the length of the window between the windway exit and the blade, the length of the tube from the blade to ...

Thanks, Terry. That should be interesting when I get a chance to plot it, but that may not be until next week. Meantime, when you get a chance, I'd be interested in what happens in the next couple of registers, too.

The one thing that doesn't seem to make much sense is why brass instruments don't experience this same phenomenon. Many of them have cylindrical bores (the trumpet, for instance), yet they still have the exact registers you'd expect (octave up, fifth up, fourth up, third up, etc.). The trumpet does...

I often wonder why no one makes any conical bore whistles - i.e., whistles that start narrow and get wider. I'd think that would increase volume, wouldn't it? It would seriously throw off the octave tuning. Woodwind bores generally taper smaller toward the bottom or toward the top to bring the octa...

1) what algorithm is used to calculate these ? I used the Transmission Matrix Method (TMM). I can't find online a tidy description of how this method works, but you can find summaries in the theses of Antoine Lefebvre (2010) or Paul Dickens (2007). 2) what is the name of the software used ? I wrote...

I have tried to get a new head from another flute maker but the result was pretty disappointing. Due to a different geometry, I had to extend the tuning slide but it was impossible to get the flute in tune even with itself. That is unexpected. As Terry says, simply shrinking the embouchure hole wou...

The lower notes seem worse, I guess because they are exposed to more losses in their longer journey down and back. It feels happier in the second octave. The longer journey is probably a big part of it. In the second octave, there is also more energy to go around, so subtracting some may not make a...

With electric (and certainly acoustic too) guitars, the various wood types and construction designs have various responses to the vibrational energies of strings. I don't think it is reasonable to compare guitar fabrication to woodwind fabrication. With guitars, the strings are physically vibrating...