Chiff and Fipple Forums

Unless presumably you reduced resistance low enough that the poor player ran out of air, or kept inadvertently falling into the second octave. At the optimum jet speed for the note, and the same windway exit, how would reducing the required pressure increase air usage ? Is a player's preferred pres...

Not convinced you can achieve it all just by lateral tapering, Hans. The windways I've been looking at typically start at around 2mm high and taper (either linearly or abruptly at the end) to around 1.25mm. That's a taper of 1.6 times. If we assumed a window width of 7.5mm, achieving the same taper...

Terry, you are wondering a lot about a taper in the height of the windway, towards its exit. But I think the effect is also achievable with a taper in the width, and keeping a uniform height. As to the shape of the taper (and also the length of the windway): my feeling is that it does not matter, as...

Thanks for the link, Hans. I looked through that site and wonder if Terry imagines something similar to the Seraphoneflote? http://www.organstops.org/s/Seraphonflote.html nice one! An organ pipe which plays very loud, and needs a lot of pressure! Scaled down to whistles, if we maximize the labium w...

Terry, you are talking about some kind of playable steam whistle design.... well, I pity the poor player... to generate enough wind! If I make my curved windows too wide I am already in trouble. And if we are using such design on low whistles, we will be running out of steam in no time at all. https...

Setting up the whistle's tuning - should I use low A = 440Hz? Should I tune the whistle on the compressor dry air or mouth's wet air? If the compressor, tweak airflow for the best sounding A = 440Hz, or the middle of the low partial range = 440Hz, or other? And once, I get it tuned and the system w...

Fascinating! I have to concede that there are different preferences, and there is no one right way. I can't recall that this issue has cropped up here in discussions. I think I never heard of particular "pressure curves" attributed to particular makes of whistles (just low to high back pre...

I'd be satisfied with good absolute accuracy and enough relative consistency to be able to say things like if G is in tune at some air speed, then A will be in tune when the air speed is y % higher. Why would it be higher, why should it be higher? I think it should not. I try design my whistles, so...

I don't see a need that the two cheap flow monitors in parallel should both monitor half of the flow, in equal measure. The sum of both is enough. Of course errors will sum up too, and your in series experiment suggests that there are errors in accuracy. Those monitors are functioning by having a ba...

An automated blowing device may be useful for measuring the steady-state behavior of a whistle. However, it would also have to emulate the initial transients of notes bumped into different registers as done by an actual player. Repeating what I still feel to be a pivotal question — given that so mu...

Very cool, very neat, Terry! And so much nicer than what I tried many years back: blowing a whistle and having at the same time a tube from a home-made fluid manometer (a pvc U tube with water in it) in my mouth. The pressure readings I got were similar to your flow readings, namely the second octav...

I am going to make myself some gauges like that, either in some plastic or hardwood. I like to try to create radially tapered windways on Delrin/aluminium whistle heads. Now am I right in thinking, hans, that in the type of whistles you make, the windway height is defined by the wall thickness of t...

I have come up with a good process for measuring, and I'll outline it here for others to try. Take the drill bit you intend to try next, and measure and note down its diameter at the blunt end. This is because you'll find its a little less than the nominal diameter. Next, hold the bit end-to-end in...

When I was working for Moeck, the voicer's toolkit for the Rottenburgh model included a feeler gauge for setting the height of the windway. It was a few centimeters longer than the windway, which tapered along its length. The gauge was about five mm wide at the end held in the hand and narrowed to ...

I've got a green low D MK whistle here, on loan. Don't know if it is called a "Pro". I am not too keen on some of the aspects, but I can observe the physical thing: Window width is 12mm, window length 9mm (quite large to my standards), block protrusion 1mm, chamfered, a windway height of m...