Further empirical data for torsion on bowed strings

Robert Mores

PLOS ONE, 2019, vol. 14, issue 2, 1-31

Abstract: Research on bowed string motion focuses on transverse waves rather than on torsional waves. These are believed to play only a minor role for stabilizing vibrations and no role for perception. Here, torsion is measured on both sides of the bow contact point for a variety of bridge-bow distances on a cello string. Every periodic string release is preceeded by a reverse torsional motion independent from bowing position or dynamics. Transverse and torsional motions are coupled and there are cases of stabilization, but also cases of perturbation or surrender. Structural and timing analyses of torsional waves suggest that the earlier concepts of differential slipping can be essentially confirmed while the concept of Schelleng ripples cannot be confirmed and the concept of subharmonics is under question.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0211217

DOI: 10.1371/journal.pone.0211217

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