The player's embouchure, lip tension, and air flow are used to play various octaves of a note. Pitches can be changed by altering the player's embouchure.
To change the pitch of a shaking instrument, add or detract from whatever material inside it forms the noise as it is shaken. Less material will give a higher pitch. More material will give a lower pitch.
Two ways that you can change the sound of an instrument are tuning or adjustment of the valves. Another way to change the sound of an instrument is to change your technique of blowing or bowing technique. I am sure there are more ways but here are some ideas!
Brass instruments have a brassy timbre due to the size of the bore (the hole), and how much emphasis is being put in to playing the instrument in order to generate the noise quality from the instrument.
The Koto, a Japanese instrument derived off the Chinese Guzhen, has thirteen strings. It has 13 strings and 13 movable bridges that can be adjusted before playing to change the pitch of the strings.
changing their embochure and tuning your insrtument
It depends on the instrument that they are playing.
They can change into coal
Barometer
The pressure is decreased to 50 %.
The rate of change of air pressure as a function of increasing altitude decreases with increasing altitude.
If you don't know what happens when there is pressure then your a down syndromes orangutang...
remains constant
Pressure Indicator is any instrument that indicates pressure. Pressure Gauge is also a type of pressure Indicator. It is a mechanical device. Pressure indicators can work on mechanical deflection (in case of pressure gauge) or Piezo electric effect, change in capacitance, change in inductance etc. These are generally digital type instruments.
As altitude increases (i.e. when you get higher) pressure falls off inversely; a change near the higher reaches will not have as much of a pressure differential as the same distance change lower down.
An altimeter is sensitive to atmospheric pressure and can show the altitude of the aircraft based on the change in atmospheric pressure from the aircraft ascending and descending. Likewise, a barometer, is sensitive to atmospheric pressure.
Other aspects of the system (such as heat) will change to maintain equilibrium
Wind happens when there is a change in pressure in the atmosphere which causes air to rush to the lower pressure area, thus causing wind.