Assertion: drum's pitch | /r/Desires | faster roll
Facets:
value: to maintain a sustained sound
type: PURPOSE
Source sentences:
text: Higher pitches on timpani require a faster roll to maintain a sustained sound; some timpanists choose to use a buzz roll on higher notes at lower volumes; although there is no definite rule, most timpanists who employ this technique do so on a high "G", and above.