Assertion: bell tower's bell | /r/CapableOf | produce secondary pitch
Facets:
Source sentences:
text: The bell produces a secondary pitch (f') which lies outside that 'inharmonic series though it is clearly audible when the bell is struck, 'to curiously thrilling and disturbing effect.'
text: "The bell produces a secondary pitch (f') which lies outside that 'inharmonic series though it is clearly audible when the bell is struck, 'to curiously thrilling and disturbing effect.'"The strike tone is middle C , the hum tone an octave below.