Tube

The Tube is the air inside a wind instrument, like the bore of a flute, clarinet, or trumpet: blow into it with a Mouthpiece, or strike it for a hollow knock. Like every Resonator, it takes Springs, Exciters, and Mics along its length, and its pitch follows the played note. Its contact points are placed along its length with Contact: U, and its contacts offer both a Velocity port (the air's flow) and a Pressure port (the air's pressure).

The end at Contact: U = 1 is always open. The end at 0 is closed when Opening is 0 and open when Opening is 1.

Its Frequency, decay, Material, Mode EQ, and other shared properties are documented on the Resonator page.

Tube Properties#

• Opening: 0 closes one end of the Tube, which leaves only the odd overtones, and 1 opens both ends for the full series; in between the overtones blend from one to the other. A closed Tube sounds like a clarinet, an open one like a flute.
• Flare: Adds even harmonics to a stopped Tube, like a clarinet's bell and tone holes. Small changes can strongly affect the tone, depending on decay and excitation. Intended mainly for Opening at 0; with a more open Tube the added partials lie between its ordinary harmonics. Uses more modes and CPU; not modulatable.