mkmtrumpeter

Following the overtone series, that partial is a Bb. I suppose if you adjusted your slides, it could be an A, but it you're using a different fingering then it's not a part of that overtone series anymore. Usually when I play an A above staff I find it helps to use third valve to bring it down a tad and I find it slots a lot better for me... but I digress. It's a flat Bb when played open.

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Mary Kate a.k.a. "Wyntona"

"If a composer could say what he had to say in words he wouldn't bother trying to say it in music."
~Gustav Mahler

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ComeBackKid

OK - this discussion has raised another question about the intervals. I found a chart on the internet which shows the note name, frequency, wavelength, etc. It is based on the A4=440hz spectrum. It shows that C4 has a frequency of 261.63 and a wavelength of 51.97 inches. I had read somewhere else (can't remember where) that a Bb trumpet has an overall tube length (open valves) of 52" (51.97?). Well, at first glance, it seems to make sense that C4, being the lowest harmonic would have a wavelength equal to the length of the tubing. But, since a Bb trumpet is playing 2 semitones below the concert pitch, that means it is not really playing the C4 note that matches the tubing length. It seems like I also read that a C trumpet has a tubing length of 48" but this does not match a concert C tone either (it matches C#). So now I am really confused. Anybody know what I'm missing?

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Come-Back Kid
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Olds SuperStar (T)
Olds Super (2T)
Olds Special (2T+C)
Olds Ambassador (9T+7C)
Andreas Eastman (2T)
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rowuk

The difference is that a trumpet is not a straight cylindrical tube.

If you have ever blown a tone across the top of a beer bottle, you know that VOLUME has a lot to say about the resonant frequency of the instrument - drink more beer and the note gets lower. The rule is for cylinders, length is the primary consideration. For irregular shapes, volume. In a trumpet both.

The bell also behaves differently at high and low frequencies. Buy 5 feet of 1/2 garden or aquarium hose, stick a mouthpiece in and check the intonation. You will discover that math and our ears have a different view on what is "in-tune". That is why I do not recommend electronic tuners. Add an old bell to that hose, and things get better.

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Whenever I feel blue, I start breathing again.

operagost

When I drink more beer, eventually the floor gets a lot higher.

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2006 Yamaha Xeno 8335RGS
1987 Conn 100B "Doc Severinsen"
1946 Conn 22B "New York Symphony"

Sofus

Robin!

Another question:

We have learned that the mouthpiece end is the open end,
and from the laws of standing waves in a tube this should
mean that the wave pressure is low in a mouthpiece, since
the wave pressure is low in an open end.
Some people, who usually know what they talk about, say
otherwise, so my question is:

* is wave pressure low as I expect in the mp end?
* if not, the why not?

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" There are no secrets to trumpetplaying - except Practice Your Head Off - and that´s no secret! "

Bud Herseth 1977 in Hamar, Norway


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Mouthpiece and Solidarity