Chiff and Fipple Forums

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...

I did find a rather acrimonious discussion of said review on Bob Dunsire, https://forums.bobdunsire.com/forum/oth ... pes/73742-

For a whistle, what are X, R ? I'm trying to visualize how the ratio X/R (reactance/resistance) looks. This graph shows the impedance of an open-ended cylindrical tube, 266 mm long and 12 mm in diameter, relative to the characteristic impedance of the tube. The blue line is R, the red line is X. ht...

I don't have a 7-hole whistle, but since no one else has commented, I'll offer what I can. The extra hole will expand your choices for cross-fingering, but I don't expect it will expand the accidentals you can get in tune very much. Let's say XXX XXXX gives you C#. You get D with XXX XXXO, and E wit...

Terry, do you happen to know if the Audacity spectrum is the the real part or the magnitude of Re+Im ? I may ask the Audacity forum. Power is a scalar quantity, it doesn't have a phase, so we use a real number for it, not a complex number. [The hole spacing on a tapered whistle is] supposed to be l...