Assertion: sounding board | /r/HasProperty | adjusted with apparatus
Facets:
value: for adding or removing mass
type: PURPOSE
value: in various implementations of this invention
type: TEMPORAL
value: for changing the material composition
type: PURPOSE
Source sentences:
text: For example, in various implementations of this invention, a soundboard may be adjusted with apparatus for changing the material composition, boundary conditions or bracing of the soundboard or for adding or removing mass at different locations on the soundboard.