Does a large bore horn take more air?
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It amazes me how much of this thread seems to equate energy required to produce a given dynamic with "takes more air". Seems like just another discussion of "resistance" in many respects.
When it come to actual fluid flow, there are two factors. For the equipment, the mouthpiece throat determines flow at a given pressure. The bore simply cannot be relevant because it is not the venturi. The other point at which flow can differ is the embouchure, with some folks needing more flow through to vibrate as greater energy into the horn is required to produce the desired result. At some point, these will come into conflict if the player is too inefficient in their part, and the pressure in the cup will exceed what the orifice at its base can flow, resulting in leaks around the edge.
But when a horn "takes more air", it is because we opt to increase the embouchure flow rate as a means of stepping up energy input to the horn, not because of some vacuum to fill with a 0.003" larger diameter tube. (Bach ML to L)
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@OldSchoolEuph said in Does a large bore horn take more air?:
It amazes me how much of this thread seems to equate energy required to produce a given dynamic with "takes more air". Seems like just another discussion of "resistance" in many respects.
When it come to actual fluid flow, there are two factors. For the equipment, the mouthpiece throat determines flow at a given pressure. The bore simply cannot be relevant because it is not the venturi. The other point at which flow can differ is the embouchure, with some folks needing more flow through to vibrate as greater energy into the horn is required to produce the desired result. At some point, these will come into conflict if the player is too inefficient in their part, and the pressure in the cup will exceed what the orifice at its base can flow, resulting in leaks around the edge.
But when a horn "takes more air", it is because we opt to increase the embouchure flow rate as a means of stepping up energy input to the horn, not because of some vacuum to fill with a 0.003" larger diameter tube. (Bach ML to L)
Word!
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So I'm a little confused.
Could we summarize, then, in layman's terms, that the amount of air required doesn't necessarily depend upon what the bore size is but, rather, upon the collective design of the horn which includes a myriad of factors?
In other words, do some horns take "more air", horn-by-horn, depending on how it's constructed rather than on bore size alone?
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@Kehaulani, just read the last post of OldScoolEuph, he explains this mith very well
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@Kehaulani said in Does a large bore horn take more air?:
So I'm a little confused.
Could we summarize, then, in layman's terms, that the amount of air required doesn't necessarily depend upon what the bore size is but, rather, upon the collective design of the horn which includes a myriad of factors?
In other words, do some horns take "more air", horn-by-horn, depending on how it's constructed rather than on bore size alone?
Exactly this - horn by horn, depending on how it is constructed, how we hear ourselves, the efficiency of the entire body/mind/mouthpiece/trumpet/playing environment system. Even the term "amount of air" is not correct as our bodies have no measure of this except running out before a phrase is finished. We can believe that the horn is a loose blow indoors, we take it out to an open lake and the same system is like blowing into a brick wall!
