Excessive heat.Enviroguy said:
Excessive heat.Enviroguy said:Is there something that would throw my setup 30 cents sharp after years of playing in tune? :?
Thanks Grumps,Grumps said:Excessive heat.
That could be. I usually swab the neck after playing a bunch but the swab will not go past the octave vent. I'll put a borescope up that bad boy tonight and see if that's the problem. This one has really got me baffled. It's like someone just turned up the pitch 30 cents.DanPerezSax said:Maybe there's something stuck in your neck. Or maybe the neck hadn't been attached to the tenor properly, and now has slipped all the way into position. That's really all I can think of...
I've seen this response before, but to my mind excessive heatGrumps said:Excessive heat.
If it is hot it gets sharper. Cold is flatter. I know this from personal experience playing outside in cold weather.kavala said:I've seen this response before, but to my mind excessive heat
equals expansion of metal which equals lower pitch :? :? :?
However, I do not claim to be an expert on these matters.
I think if it was hot enough to expand the metal, you would not be able to touch it! I was just playing in my garage (baby was napping) just a couple of weeks ago. It was sweltering hot in there and I was playing horribly sharp.kavala said:I've seen this response before, but to my mind excessive heat
equals expansion of metal which equals lower pitch :? :? :?
However, I do not claim to be an expert on these matters.
It's counter-intuitive, but indeed, in contrast with other instruments, this is defenitely the case.kavala said:I've seen this response before, but to my mind excessive heat
equals expansion of metal which equals lower pitch :? :? :?
There was a lengthy thread on this topic a while back. The expansion of the metal of the instrument is so small that its effect on the pitch is negligible. The speed of sound is determined by the temperature and humidity of the air. In dry air at 72 degrees F the speed of sound is approximately 345 m/s. At 75 degrees F the speed of sound is approximately 346 m/s.kavala said:I've seen this response before, but to my mind excessive heat
equals expansion of metal which equals lower pitch :? :? :?
However, I do not claim to be an expert on these matters.
My idea too. If it was mechanical, you would go up 30%, including on the low D, C, B and Bb. At least, that's what my intuition tells me.Reedsplinter said:Is it possible that working heavily on soprano has tightened your tenor embouchure, causing the tenor to play sharp? You might try spending a week concentrating on tenor again: long tones. See if your tenor intonation calms down again.
A very good explanation John.jbtsax said:There was a lengthy thread on this topic a while back. The expansion of the metal of the instrument is so small that its effect on the pitch is negligible. The speed of sound is determined by the temperature and humidity of the air. In dry air at 72 degrees F the speed of sound is approximately 345 m/s. At 75 degrees F the speed of sound is approximately 346 m/s.
Pitch (frequency) is related to the speed of sound by this formula:
Frequency = velocity (speed of sound) / wavelength
Using this formula for an A =440 the wavelength is .784 meters. When the temperature rises from 72 to 75 degrees F, the speed of sound increases 1 m/s and therefore the pitch of A rises to 441 vps or about 4 cents on the tuner.
John