Bow stick-slip generates a sawtooth Helmholtz wave with rich harmonics

Evidence

Cooperative resonance involving the stick and slip of the violin bow against the string sets up a Helmholtz wave, which is a circulating kink leading to a displacement force at the bridge shaped like a sawtooth, possessing many harmonics. These are communicated to the body by the bridge. — Eric J. Heller, Why You Hear What You Hear- An…, 1804

Categorization

• DEFINE: Explains the Helmholtz wave mechanism central to bowed-string acoustics.
• XREF: connects to: Bowed strings alternate between stick and slip motion — David Howard, Jamie Angus, coustics and Psychoacoustics, 1129