Music, like all sound is made up of sound waves traveling through the air. On a string instrument, the sound wave originates with a wave (actually many waves) on a vibrating string. Wind instruments don't have a string, and the sound you hear doesn't sound much like the vibrating reed of a woodwind or the vibrating lips of a brass players. We hear a wave that is established in the air inside the instrument.
Of course, air moves through and out of an instrument, but the wave doesn't leave the instrument. A corresponding sound wave, which we hear, is created outside the instrument, but the wave inside the instrument doesn't leave the instrument any more than the wave on a string leaves the string.
We need a term to describe the air that is inside the instrument - the air where the wave is established and that term is "column of air."
A sound is produced in a wind instrument when a column of air vibrates inside a tube.A sound is produced when a column of air vibrates inside a tube.
?? soundwaves?
valves
Harmonica.
the lower the sound
Melody is the principle part of any tune, or air.
It could be refurring to the part of a wind instrument that the air flows through when blown in to. For example in a saxophone it would be the inside of the bell, and body, and the neck where the air firsts enters the horn
air pressure is decreasing
It just means "melody". http://popularmusichistory.com/
the weight of a column of air above you that puts pressure on you
this is where liquid air changes back to various gases.
A short air column produces a shrill note of higher pitch than a longer air column.
It means unhealthy air....
length of vibrating air column
A violently rotating column of air is called a tornado.
Computer Room Air Conditioner.
for your information i am transporting freight by air.