Posts made by Dr GO

@Richard-III said in Could you have a metal allergy?:
You said: "A watch or ring worn continuously for weeks will eventually give me a rash."

This is because it takes hours to days to develop nickel contact dermatitis, as opposed to minutes to hours to develop a poison ivy contact dermatitis (as the plant's oils bring the allergen into the lipid layers of the skin much more quickly). So I am betting if you paste a nickle mouthpiece to your lips (disclaimer - I do not recommend this), you would likely develop this rash as well.

The lad in the post is a trumpet student, and I bet did spend hours a day on the horn, making him even more sensitive to developing a lip contact dermatitis to nickel.

@Richard-III said in Could you have a metal allergy?:

The article linked by the OP in this thread contained this quote:

“I would feel this tingling or stinging when I put the metal mouthpiece up to my face, but I played through it because it always felt like that. It was really during the last two years when I started to feel serious pain, where it hurt to play or even touch my face after I’d been playing.”

Doesn't sound like contact dermatitis to me.

Oh but it does. Tingling, stinging initially leading to serious pain in two years. Here are the symptoms of of contact dermititis as referenced by the Mayo Clinic:

Signs and symptoms of contact dermatitis include:
A red rash.
Itching, which may be severe.
Dry, cracked, scaly skin.
Bumps and blisters, sometimes with oozing and crusting.
Swelling, burning or tenderness.

https://www.mayoclinic.org/diseases-conditions/contact-dermatitis/symptoms-causes/syc-20352742

From the same site:
*Allergic contact dermatitis occurs when a substance to which you're sensitive (allergen) triggers an immune reaction in your skin. It usually affects only the area that came into contact with the allergen. But it may be triggered by something that enters your body through foods, flavorings, medicine, or medical or dental procedures (systemic contact dermatitis).

You may become sensitized to a strong allergen such as poison ivy after a single exposure. Weaker allergens may require multiple exposures over several years to trigger an allergy. Once you develop an allergy to a substance, even a small amount of it can cause a reaction.*

Common allergens include:
Nickel, which is used in jewelry, buckles and many other items**

I stopped here because Nickel is at the TOP OF THE LIST.

Richard-III it is a contact dermatitis, caused by Nickel and it does present, especially chronically, like the individual in the post.

@ROWUK said in Does a large bore horn take more air?:

Simply, NO. it is not the bore that needs air. It is the resistance and that has nothing to do with the bore.

Thank you again Rowuk. And in fact the bore effect on resistance would predict from Poiseuille's law to be LESS FOR A LARGER BORE:

R = constant/r(4) So the larger the number (bore diameter) in the denominator, the SMALLER the resistance. So again the decreased resistance in a 0.468 bore versus 0.458 bore instrument is ONLY 8%. Again, I do not think you will feel this and again I hope Rowuk and I convince you that the resistance has nothing (very little at best) to do with the bore.

Can we now but this discussion to rest? Please stop breaking the [Poiseuille] law.

Thanks Rowuk, and to continue to press our point:

More on the thoughts that it takes more air to fill a large bore horn.

This is the volume of a 0.458 inch bore down the length of the leadpipe into the valve casing:
V = pi x r2 x length = 215 ml (conversion made to change inches to centimeters)

This is the volume of a 0.468 inch bore down the length of the leadpipe into the valve casing:
V = pi x r2 x length = 226 ml (conversion made to change inches to centimeters)

So the difference between the medium bore and large bore used in this example is 11 ml.
Your lungs vital capacity is 500 ml and when taking in a breath to play a maximum blow is at 5,000 ml.

So just playing your horn without the need to take in an extra breath (using that 500 ml of air) means that the demand of the volume of lung air to "fill the large bore horn" is only (500 ml - 11 ml)/500 ml = or only 2% of your lung's vital capacity to increase the air filling of a large bore trumpet over a medium bore trumpet.

If you still think you are working harder filling your large bore horn with air, then please, schedule an appointment with me at my new medical practice at Western Medicine, LLC in Enon, Ohio, because I need to seriously start a work up for lung disease.

@ROWUK said in Does a large bore horn take more air?:

Simply, NO. it is not the bore that needs air. It is the resistance and that has nothing to do with the bore.

Thanks Rowuk. I've been trying to convince others on this thread but they all seem to be reluctant to appreciate the physics of a propagating sound wave through various materials. I guess my having a PhD in quantum chemistry doesn't qualify me, but your understanding of Trumpet physics truly blends with my training in wave forms.

The simple observation that if it was air transmission dependent, we would not be hearing the sound until seconds after a note was played. I hope people reflect on these concepts as I do feel this understanding can enhance the performance we get from our horns.

@flugelgirl said in Flugel case:

You could try a Torpedo Coyote with the snarl lid - works for my Adams F2 which is quite large. If you contact them they can tell you if it will fit.

I have this one and it works great!

@Richard-III said in Could you have a metal allergy?:
I can't seem to find any reference that indicates the instant reaction that has been described when sensitive to a mouthpiece metal. Can anyone point me to that? Further I can't find any reference to pain or other neurological reaction that has been described. I'm curious about the mechanism of this. Thanks.

Nickle allergy is a "contact dermatitis" and can sometimes appear and confused for poison ivy. This therefore requires a repeat exposure, then sensitization of the immune response. Once sensitization is processed, then the rash goes from gradual to very rapid response.

I have seen this in my practice related more to body piercing and ear rings. The symptoms (as noted above) of chronic exposure (when wearing the metal) are even more impressive. Eliminating the contact is the obvious treatment, and I found substituting the metal (or moving to a higher quality product not including Ni) is still an alternative such that jewelry may still be used.

I try to avoid use of steroid in cartilaginous areas (such as the ear) but in non-cartilaginous areas a steroid cream can be used to heal the blisters faster for the metal change to then be made. For the ear, I find just using mineral oil will help as well without risk of damaging cartilage.

So for most trumpet players that will heal the rash, a topical steroid would work... but if you play by ear... maybe not?

@Tobylou8 said in Does a large bore horn take more air?:

Yep, the air moves or you can't play the horn. Take a simple cheap Bach practice mute, insert into the bell and play. As you play, place your finger over the hole in the end. The air cannot flow through the horn and all sound stops, and if you're playing loudly, your ears may pop!

Nope... Air travels much more slowly than the vibratory wave.

@Bob-Pixley said in Does a large bore horn take more air?:

@Dr-GO said in Does a large bore horn take more air?:

@grune said in Does a large bore horn take more air?:

@Kehaulani What do you mean, "take more air"? Technically, yes, a larger bore is a larger diameter, which creates a larger volume of air.

The volume of air in a horn is static. Large bore, medium bore or small bore. We do not replace that air when we blow into the mouthpiece, but are vibrating the air that is already there. So it takes no increase in air (more air) in a large bore horn if the efficiency in the vibratory freedom of that horn moves the sound wave through the medium filling the horn.

I'll disagree a bit. True, the air is already in the horn, but the act of blowing to induce lip vibration does move air through the instrument.

Watch the video of blowing smoke through the horn. It moves very slowly. It's the vibratory wave that transmits rapidly.

@administrator said in Disclaimer:

Nothing in this board should be considered medical advice condoned by... any person affiliated with the website. While we have several trustworthy members who are... doctors, please consult a qualified medical professional with any questions or concerns you may have.

I highlighted the important context as it applies to me, who has been giving much of he advice in this thread section. I agree with this disclaimer and it must be important to understand that.

The advice I give is purely my opinion that comes from my training and 27 years of practice experience as a double boarded certified internist and pediatrician. But most important, beyond this experience, is that anyone posting a question and getting an answer from me is encouraged to take the response to their provider for the final say in decision making. The communication in real time between you, the patient and your physician is paramount and will yield to the best clinical outcome.

It is my hope and intent that my comments provides a path that brings helpful ideas and options to the physicians providing the actual care plan.

@administrator said in Help! I need to hit that high note!:

This reminds me of a couple Arturo Sandoval concerts I attended. He would go into the stratosphere and then crash to hell (if you get my drift). I did not know that such low notes were possible on the trumpet.

He plays a Harrelson and that helps. Sure he can do it on any horn, but why work so hard. I met him personally at a workshop and he confided this to me... of course after I gifted him two Cuban cigars.

@grune said in Does a large bore horn take more air?:

@Kehaulani What do you mean, "take more air"? Technically, yes, a larger bore is a larger diameter, which creates a larger volume of air.

The volume of air in a horn is static. Large bore, medium bore or small bore. We do not replace that air when we blow into the mouthpiece, but are vibrating the air that is already there. So it takes no increase in air (more air) in a large bore horn if the efficiency in the vibratory freedom of that horn moves the sound wave through the medium filling the horn.

@Tobylou8 said in Do you see what I see??:

Tell Wayne... , and Dan.... . I think they know what they are doing. Be interesting to know why they used them I think.

Ummm.... Tobylou, they are in a recording studio. Read my post carefully. They are playing in this artificial environment of perfect sound with digital instruments on tune. So they use this to stay on tune.

I recorded a session with Kenny Drew Jr on a highly out of tune piano. His virtuosity to work around those off notes and the rest of the ensembles ability to hear and adjust ended up in a fabulous recording. If we had those tuners set to perfect, the recording would never have made it to production.

@Vulgano-Brother said in Best Off-brand Trumpets:

@Dr-GO said in Best Off-brand Trumpets:

Oh by the way, here is a picture of my daughters:

Are they married yet, Dad?

You interested? Both are available. I am their agent. Will make a trade for a good horn. Off brand of course as they are both a bit left of center.

@Tobylou8 said in Do you see what I see??:
...I see 2 trumpets with tuners on them.
BINGO!!!! If these two cats use them.... just sayin'. Thanks for responding. I had forgotten about this awesome video!!

And I am not so sure this is a good thing... Perhaps just perhaps in a recording studio, but not in real time performance.

Why? It is a section leaders responsibility to be in tune with the ensemble, not necessarily the perfect pitch. I have played in many an ensemble when the leader (bassist) insists on tuning to them. Tonight, I play in a big band rehearsal at the University of Dayton's piano is a quarter tone flat where I have to put the tuning slide out about an eighth of an inch from the perfect pitch. I have a tuning app on my phone, but I tune to the piano, not the app, and I expect my entire section to tune with me (which they do).

@Tobylou8 said in Help! I need to hit that high note!:

OK... But WHERE are the high notes?

8VA!!!!

Yes... I should have had a V8... to go with my HiC!

This is very nice. Love her vocal and very tasty trumpeting.

Here is the classic version of JUST Lee Morgan's solo (transcribed as the solo goes by). The spirit I like to convey is that of a sermon when soloing. Lee really give a sermon on his rendition: