Playing Harmonics in Strings (flageolet tones)
Example: 800 Hz string. Place your finger lightly
at a point exactly 1/4 from the end of the string
What frequencies will be present in the tone?
Answer: those modes of the 800 Hz string which
have a node where you place the finger-
all other oscillations are killed by finger.
What are they? Fourth mode, eighth mode, twelfth mode
3,200 Hz 6,400 Hz, 9,600Hz.
(Explain on blackboard)
Used in composition (e.g. Ravel)
Homework # 4
Related comment: where you pluck or bow affects mix of partials
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