There are two options: If you are talking about bass drum . . . Two bass drums with a pedal attached to each A single bass drum with a double bass pedal If you are talking about upright double bass, it can be plucked with the fingers, or bowed.
A double bass quartet is an ensemble consisting of four double basses. A bass quintet is either an ensemble with five double basses or a regular string quartet (two violins, viola and cell) with a double bass added to the group.
If you refer to the bass drum, there are two ways to make a double bass. Firstly, you can simply have two separate bass drums, each with their own pedal. Secondly, you can buy a double bass pedal, which has two pedals and mallets which are designed to strike a single bass drum.
Yes, in referring to stringed instruments "double bass" is just another way to say "upright bass". However, the phrase "double bass" is also frequently used by percussionists to refer to a drum set which has two kick drums.
The body of a full size double bass, or what they call a 4/4 double bass, measures around 75 inches. With the addition of the end pin, the pole at the bottom of the body, the double bass can get up to around 7 feet tall.
Bari is the capital city of the province of Bari and of the Apulia region, on the Adriatic Sea, in Italy. As far as I know, Bari is not a name for a Double Bass. Other names for the Double Bass include String Bass and Contrabass.