whatever! I asked this question
A Bugle is a brass instrument without valves.Bugle
Brass instruments can have valves or a slide, but not reeds. Brass instruments create sound by the vibrating of the player's embouchure in a mouthpiece, and the valves and slides on the instrument change the length of the tubing in the instrument which affects the pitch of the notes produced. Reeds are used in woodwind instruments to vibrate to produce a sound instead of using a mouthpiece like in brass instruments.
I'm no brass instrument, but rotary valves are used for several instruments. French horns all seem to have them. They're pretty common on tubas as well. There are even some rotary valve trumpets out there. I don't know, though, anything about the advantages and/or disadvantages of rotary valves as opposed to the piston valves that seem to be more common for most brass instruments.
Typically, trombone players play trombone. Sometimes, trumpet players will attempt to play the trombone. They often must rely on valve trombones since the valve system is the same between the two instruments.
Brass instruments are played by pressing the lips together and blowing air to produce a buzzing sound. A mouthpiece projects this sound into the horn, which projects it further. The pitch of the sound can be changed two ways. One is by changing the pitch of the buzz. This will only get you a certain number of notes based on the key of your instrument (harmonic series). The other way is by lengthening your instrument. The longer the lower. On a trombone, it's easy to see. You push out the slide, the pitch goes down. On valve instruments, it's a bit more complicated. Pressing a valve opens a passageway so that the air can take a detour. Pressing a certain valve lowers the pitch a certain amount and you can get all the notes you want with different combinations of valves. On a trombone, it's simply how far you push out the slide.
A Bugle is a brass instrument without valves.Bugle
Brass instruments can have valves or a slide, but not reeds. Brass instruments create sound by the vibrating of the player's embouchure in a mouthpiece, and the valves and slides on the instrument change the length of the tubing in the instrument which affects the pitch of the notes produced. Reeds are used in woodwind instruments to vibrate to produce a sound instead of using a mouthpiece like in brass instruments.
I'm no brass instrument, but rotary valves are used for several instruments. French horns all seem to have them. They're pretty common on tubas as well. There are even some rotary valve trumpets out there. I don't know, though, anything about the advantages and/or disadvantages of rotary valves as opposed to the piston valves that seem to be more common for most brass instruments.
Typically, trombone players play trombone. Sometimes, trumpet players will attempt to play the trombone. They often must rely on valve trombones since the valve system is the same between the two instruments.
Trombones and bugles.
Viewing from the back, IN is the center, OUT is the right. This is the older brass valve unit.
Brass instruments are played by pressing the lips together and blowing air to produce a buzzing sound. A mouthpiece projects this sound into the horn, which projects it further. The pitch of the sound can be changed two ways. One is by changing the pitch of the buzz. This will only get you a certain number of notes based on the key of your instrument (harmonic series). The other way is by lengthening your instrument. The longer the lower. On a trombone, it's easy to see. You push out the slide, the pitch goes down. On valve instruments, it's a bit more complicated. Pressing a valve opens a passageway so that the air can take a detour. Pressing a certain valve lowers the pitch a certain amount and you can get all the notes you want with different combinations of valves. On a trombone, it's simply how far you push out the slide.
90
You can put an aerator wherever there is threading for one.--I'm not sure of your description "brass faucet valve". - The end of the spout is generally threaded for an aerator.
Most have 3 or 4 valves except for the trombone which has a slider. There is a bell, a mouthpiece, a water key to let out condensation, and valve slides. The French horn doesn't have valves, it has 4 keys, which do the same thing.
Yes.
According to Wikipedia, a variable valve timing is a "process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions".