Assertion: tuba's valve | /r/CapableOf | lower the pitch
Facets:
value: to b♭
type: OTHER
value: by one step
type: OTHER
value: by a perfect fourth
type: OTHER
Source sentences:
text: The first valve lowers the pitch by a whole step (two semitones), the second valve by a semitone, and the third valve by three semitones.
text: Instruments today are typically built in two configurations: the traditional style with two valves lowering the pitches to E♭ and B♭ (combined placing the instrument in A♭) and the “American” style with two valves in C and D♭ (combined to place the horn in A.)
text: Since valves lower the pitch, a valve that makes a pitch too low (flat) creates an interval wider than desired, while a valve that plays sharp creates an interval narrower than desired.
text: In instruments with a fourth valve, such as tubas, euphoniums, piccolo trumpets, etc. that valve lowers the pitch by a perfect fourth; this is used to compensate for the sharpness of the valve combinations 1–3 and 1–2–3 (4 replaces 1–3, 2–4 replaces 1–2–3).
text: Some modern flugelhorns feature a fourth valve that lowers the pitch a perfect fourth (similar to the fourth valve on some euphoniums, tubas, and piccolo trumpets, or the trigger on trombones).
text: The valves follow the same schema as other valved instruments-the first valve lowers the pitch by one step, the second valve by a half-step, and the third valve by one and a half steps.