Editing Brass instrument (section)

==== Cylindrical vs. conical bore ====
While all modern valved and slide brass instruments consist in part of conical and in part of cylindrical tubing, they are divided as follows:
* '''Cylindrical bore''' brass instruments are those in which approximately constant diameter tubing predominates. Cylindrical bore brass instruments are generally perceived as having a brighter, more penetrating tone quality compared to conical bore brass instruments. The trumpet, and all trombones are cylindrical bore. In particular, the slide design of the trombone necessitates this.
* '''Conical bore''' brass instruments are those in which tubing of constantly increasing diameter predominates. Conical bore instruments are generally perceived as having a more mellow tone quality than the cylindrical bore brass instruments. The "[[Brass band (British style)|British brass band]]" group of instruments fall into this category. This includes the flugelhorn, [[cornet]], [[alto horn|tenor horn (alto horn)]], baritone horn, horn, euphonium and tuba. Some conical bore brass instruments are more conical than others. For example, the flugelhorn differs from the cornet by having a higher percentage of its tubing length conical than does the cornet, in addition to possessing a wider bore than the cornet. In the 1910s and 1920s, the [[E. A. Couturier]] company built brass band instruments utilizing a patent for a continuous conical bore without cylindrical portions even for the valves or tuning slide.