Half a croissant, on a plate, with a sign in front of it saying '50c'
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Funnel Sword

Throws blades of sound.
  (+4, -3)
(+4, -3)
  [vote for,

The sword has a open funnel at the end of the handle that directs air up through the hollow blade when swung properly, The blade Is also curved so air travels along the curve and joins with the air coming out of the edge of the blade which travels through the hollow. The air generates some sort of vocalization similar to speech, using a combination of sounds generated along the blade. When the sound reaches your ear, it is assembled into a word. Possibly Shields could block these, but are instead spring loaded diaphragms that shoot blasts of sound containing air back at the opponent. The blades could be interchangeable by having multiple sheath sections that attach new vocalization patterns.
rcarty, Dec 20 2014

Aeroacoustics of swinging tubes http://doc.utwente....1/aeroacoustics.pdf
[EnochLives, Dec 31 2014]


       I don't think this would work as described.
pocmloc, Dec 20 2014

       You thought about so it mustn't work that way.
rcarty, Dec 20 2014

       What way? The way you claim I thought (which I dispute anyway and deny any knowledge of since I never said I thought about it), or the way you described it?
pocmloc, Dec 21 2014

       It wouldn't work as desired but would still be an excellent training tool. [+]
Voice, Dec 21 2014

       ... presumably for training in Zen:   

       "The sword will work once you put aside desire, Grasshopper."   

       "Umm... he's Grasshopper; I'm Mealworm."   

       "Of course, sorry."
pertinax, Dec 21 2014

       Why wont it work, it works like the mouth sounding out vowels, consonants through openings that make sound along the blade. All of these producing sound together combined with the projection should create some type of audible blend.
rcarty, Dec 21 2014

       There are many reasons why many things would't work, not even the 'bakery is big enough to list them all.
pocmloc, Dec 21 2014

       Just that much of explanation would be enough.
rcarty, Dec 21 2014

       [rcarty] You're basically asking why a woodwind can't be made to speak English.
Voice, Dec 21 2014

       It doesn't need ot speak English it only needs to twit, or make onomatopoeia hallucinations.
rcarty, Dec 21 2014

       This reminds me of those corrugated plastic pipes one can swing in a circle to make a noise. The faster the swing the higher the pitch. I think it has to do with the resonant frequency of the tube because the different pitches are in octaves. I have considered attaching such to a motor, as one can only swing so fast with meat and bone. This would allow faster swing speeds and more pitches.   

       Actually a bicycle would be perfect! One of those "derailleur" equipped french ones. It would have to be mounted on a ledge to give the swinging tube some clearance.   

       The question then is exactly what produces the sound. On swinging the thing, I do not think air traverses the tube and blows out the front as is proposed here. Although possibly - maybe from decreased relative pressure at the distal end due to its speed? I suspect it is the length and possibly the circumference? Clearly there is work to be done with these things!   

       I do like the idea of /onomatopoeia hallucinations. / though am less sure about ^^^ or >>>. We are primed to hear speech and if one starts with the suggestion that speech will be heard (from a sword spirit?) subsequent sounds will be interpreted that way.
bungston, Dec 30 2014

       I would think that the swinging pipe toy creates a higher pressure at the distal end. Essentially the tube acts like a single passage in a radial compressor. Air will flow radially outwards, increasing in pressure as it does so. I gather that the sound generation is a function of localised vortex shedding over the corrugations, but I don't understand the details (link). I don't see why the device couldn't contain corrugations of various wavelengths to create compound sounds.
EnochLives, Dec 31 2014

       /higher pressure at the distal end/ Suppose one held the pipe still and used a blower to blow air laterally across the distal opening of the pipe. Would that produce higher or lower pressure inside the distal pipe?
bungston, Dec 31 2014

       That is a fine article, Enoch. My favorite part:   

       /The instrument has received the names “Voice of the Dragon” and “Lasso d’Amore.”/   

       I am loving the Lasso d'Amore. That may become my new pseudonym, Lasso being the Romansh masculine equivalent of Lass, and d'Amore representing my love, and more.
bungston, Dec 31 2014

       Glad you're enjoying the article.   

       //Would that produce higher or lower pressure inside the distal pipe?// Lower, but the pipe isn't stationary. The rotating motion describes a vortex in the plane of the pipe. For radial force balance the pressure must be higher at the periphery of the vortex than at the centre-line. A good way to see this is to stir a cup of tea and note that the level is described by a parabola which is lowest in the centre.
EnochLives, Dec 31 2014


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