Assertion: disc's sound | /r/HasProperty | focused by horn
Facets:
value: onto a diaphragm
type: TRANSITIVE-OBJECT
Source sentences:
text: The sound to be recorded was focused by a horn onto a diaphragm, causing it to vibrate; the vibrations were transmitted to a stylus and modulated its motion as it followed a helical path along the surface of a yielding material (such as wax) that coated a cylinder rotating under the stylus.