Does altitude change the sound of speakers??

If it changes the sound of speakers it's bound to change the sound of a lot of other things too.  Does it seem to change the sound of anything else you've noticed?

Anyone can talk talk. In the interest of science I have done the work and can now state unequivocally the effect of altitude is positive. The higher I am, the better it sounds.

Maybe this is a start.

https://physics.stackexchange.com/questions/48251/does-altitude-affect-sound-pitch

https://www.amazon.com/dp/0486602923

On the other hand, OP is denying us her/his experience.

glupson, she is a rather entertaining author. One of the best was entitled, "Stiff: The Curious Lives of Cadavers," I believe. I was reading it when flying over the Atlantic, when a flight attendant said, "What are you reading?" I shared the tile, and she said, "Oh, I read that, too!" 

I commented that I was currently at the part about airline disasters and what happens to the body when a plane breaks apart at high altitude. Didn't bother me excessively, though midair.   :) 

douglas_schroeder,

Descriptions on her website seem like it is an interesting casual read.

At the same time, I was expecting that your flight attendant’s question after learning what you were reading up in the air would be "Why do you care?"

"Stiff" is an interesting choice for the title of the book about cadavers.