Saturday 2 February 2008

Double bass

This article is about the stringed instrument. For the technique used in percussion, see Double bass drumming.
The double bass(also known as the contrabass, string bass, upright bass, bull fiddle, bass fiddle, bass violin, or simply bass) is the largest and lowest pitched bowed string instrument used in the modern symphony orchestra. It is the a standard member of the string section of the symphony orchestra and smaller string ensembles in Western classical music. In addition, it is used in other genres such as jazz, 1950s-style blues and rock and roll, rockabilly/psychobilly, bluegrass, and tango.

Double basses are constructed from several types of wood, including maple for the back, spruce for the top, and ebony for the fingerboard. It is uncertain whether the instrument is a descendant of the viola da gamba family or from the violin family; while the double bass has features which are similar to those found on violin family instruments, it also has features which may be derived from the viol family.

Like many other string instruments, the double bass is played either with a bow (arco) or by plucking the strings (pizzicato). In orchestral repertoire and tango music, both bowing and plucking styles are used. In jazz music, the bass is mostly plucked, except for some solos which are performed with the bow. In most other genres, such as blues and rockabilly, the bass is plucked.

History

The double bass is generally regarded as the only modern descendant of the viola da gamba family of instruments, a family which originated in Europe in the 15th century, and as such it has been described as a "bass viol." Before the 20th century many double basses had only three strings, in contrast to the five to six strings typical of instruments in the viola da gamba family or the four strings of instruments in the violin family. Some existing instruments, such as those by Gasparo da Salò, were converted from sixteenth-century six-string contrabass violoni.[4]

The double bass's propor

tions are dissimilar to those of the violin and cello; for example, it is deeper (the distance from top to back is proportionally much greater than the violin). In addition, while the violin has bulging shoulders, most double basses have shoulders carved with a more acute slope, like members of the viola da gamba family. Many very old double basses have had their shoulders cut or sloped to aid playing with modern techniques. Before these modifications, the design of their shoulders was closer to instruments of the violin family.

The double bass is the only modern bowed string instrument that is usually tuned in fourths (like viols), rather than fifths (see Tuning, below). The issue of the instrument's exact lineage is still a matter of some debate, and the supposition that the double bass is a direct descendant of the viola da gam

ba family is an issue that has not been entirely resolved.

In his A New History of the Double Bass, Paul Brun asserts, with many references, that the double bass has origins as the true bass of the violin family. He states that, while the exterior of the double bass may resemble the viola da gamba, the internal construction of the double bass is nearly identical to that of other instruments in the violin family, and is very different from the internal structure of viols.

Terminology

A person who plays this instrument is called a bassist, double bassist, double bass player, contrabassist, contrabass player, or simply bass player. The instrument's standard English name, double bass is derived from the tuning of one octave lower than the cello. It is not related to physical size. The name may derive from its alleged viol family heritage, in that it is tuned lower than the standard bass viola da gamba. The name also refers to the fact that the sounding pit

ch of the double bass is an octave below the bas

s clef.

Other terms for the instrument among classical performers are contrabass (which comes from the instrument's Italian name, contrabbasso), string bass, or simply bass. Jazz musicians often call it the upright bass to distinguish it from the electric bass guitar. Especially when used in folk and bluegrass music, the instrument can also be referred to as an upright bass, standup bass, bass fiddle, or bass violin (or more rarely as doghouse bass or bull fiddle). Other colourful nicknames are found in other langu

ages; in Hungarian, for instance, the double bass is sometimes called

nagy bőgő, which roughly translates as "big crier", referring to its large voice.

Design

Example of a Busetto-shaped double bass: Copy of a Matthias Klotz (1700) by Rumano Solano


The design of the double bass, in contrast to the instruments in the violin family, has never been fully standardized. In general there are two major approaches to the design outline shape of the double bass, these being the violin form, and the viol da gamba form. A third less common design called the busetto shape (and

very rarely the guitar or pear shape) can also be found. The back of the instrument can vary from being a round, carved back similar to that of the violin, or a flat and angled back similar to the viol family.

The double bass features many parts that are similar to members of the violin family including a bridge, f-holes, a tailpiece, a scroll and a sound post. Unlike the rest of the violin family, the double bass still reflects influence and c

an be considered partly derived from the viol family of instruments, in particular the violone, the bass member of the viol family.

The double bass also differs from members of the violin family in that the shoulders are (sometimes) sloped, the back is often angled (both to allow easier access to the instrument, particularly in the upper range), and machine tuners are always fitted. Lack of standardization in design means that one double bass can sound and look very different from another. To see some of the variations and construction approaches discussed above visit the websites quoted below.

Construction

The double bass is closest in construction to violins, but has some notable similarities to the violone (literally "large viol"), the largest and lowest member of the viola da gamba family. Unlike the violone, however, the fingerboard of the double bass is unfretted, and the double bass has fewer strings (the violone, like most viols, generally had six strings, although some specimens had five or four).

An important distinction between the d

ouble bass and other members of the violin family is the construction of the pegbox. While the violin, viola, and cello all use friction pegs for gross tuning adjustments, the double bass has machine heads. This development makes fine tuners unnecessary. At the base of the double bass is a metal spike called the endpin, which rests on the floor. This endpin is generally more robust than that of a cello, because of the greater mass of the instrument.

The soundpost and bass bar are components of the internal construction. The materials most often used are maple (back, neck, ribs), spruce (top), and ebony (fingerboard, tailpiece). The exception to this are less-expensive basses which have laminated (plywood) tops, backs, and ribs. These basses are resistant to

changes in heat and humidity, which can cause cracks in spruce tops. Composite material basses, which are used in music schools, are very resistant to humidity and heat, as well to the physical abuse they are apt to encounter in such an environment.

All parts are glued together except the soundpost, bridge and tailpiece, which are held in place by string tension. The tuning machines are attached to the sides of the pegbox with wood screws. The key on the tuning machine turns a worm, driving a worm gear that winds the string.

Salient parts of the double bass

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