Yes.
Instead of valves, trombones have a movable slide. When extending the slide it causes the tube to be longer and this impacts along with lip configuration to changing the note and pitch
Trombones are played by moving a slide, while other brass instruments use valves to change notes.
Unlike the rest of the brass family, trombones change notes by moving a slide instead of using valves.
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.
A trombone
Instead of valves, trombones have a movable slide. When extending the slide it causes the tube to be longer and this impacts along with lip configuration to changing the note and pitch
Trombones are played by moving a slide, while other brass instruments use valves to change notes.
Unlike the rest of the brass family, trombones change notes by moving a slide instead of using valves.
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.
Yes, but there are trombones that do have valves. Bugles- no valves
A trombone
Brass instruments may have:valves (trumpets, baritones, tubas, cornets, susophones)slides (trombones)keys (horns)nothing (natural trumpets)
Most trombones don't have valves and just have a slide to change the length of the tubing that the air travels through. A bugle is another brass instrument that does not have valves. All changes in pitch are made by altering the player's embouchure on the bugle.
Yes. There is an instrument called a "valve trombone", which basically looks like a trombone except that the slide doesn't move and there are three valves near the mouthpiece that look a lot like trumpet valves. In fact, trumpet players are often asked to play valve trombone in middle and high school jazz bands when no regular trombone players are around to fill the seat. This is possible because the fingerings on a valve trombone are exactly the same as those on a trumpet. Some trombone players, me included, find the valve trombone to have a somewhat flatter (tone, not pitch) sound than a traditional trombone. However, a good enough musician can easily achieve a beautiful sound on a valve trombone. Additionally, there is a horn called a marching trombone that also three valves. It is similar to a baritone, but the tubing length and bore sizes are closer to those of a trombone.
The valves in a brass instrument re-direct the air into different parts of the tubing. Each valve controls a different part of the instrument. The longer the tubing, the lower the note will be.
Trombones usually have zero valves. There's such a thing as a valve trombone, but that uses the standard three valve configuration, similar to a trumpet.
Neither it is a woodwind instrument and has keys. Do you mean the soprano cornet? This is a brass instrument which has piston valves.