[TPIN] Ambient Temps And Intonation

[vglockwood at comcast.net]

I am so going to try the helium thing ....
-Gin

-------------- Original message -------------- 
From: Steve Evans <baissie at yahoo.com> 

> ----- Original Message ---- 
> From: Jon jon at yakatus.com 
> 
> 
> Has nothing much to do with metal expansion - hot air vibrates faster than 
> cold, thus causing the horn to go sharp. Pretty easy to test with a tuner. 
> 
> ------ 
> 
> Which leads to another interesting experiment. 
> 
> Drink plenty of your carbonated beverage of choice. 
> 
> Now play some long tones and work up a good belch. (science is not always 
> pretty) It's very important that you keep playing while the carbonated "exhale" 
> is traveling through the horn. The pitch will go extremely flat - possibly even 
> a half tone - which leads to the conclusion that sound waves travel very slowly 
> through whatever gas mixture is in that belch. It also affords the opportunity 
> to measure the amount of time it takes for one puff of air to travel through the 
> entire length of the horn. 
> 
> And finally, this leads to the hypothesis that if you inhale helium just before 
> you play, you will be able to play higher. 
> 
> All in the name of trumpet science, mind you. ;) 
> 
> (this experiment was done in a closed studio by a fully qualified and licensed 
> stunt trumpet player - don't try this at home) 
> 
> ...Steve 
> 
> 
> Sorry, I needed a short diversion. It's Monday! 
> 
> 
> 
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