Bows, Strings, and Bowing

Guettler, Knut

doi:10.1007/978-1-4419-7110-4_16

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…(10). Figure 8 illustrates the predicted frequency dependencies of the real (in-phase) component of the admittance inline with the driving force.…”

Section: E Influence Of Bow On Radiated Soundmentioning

confidence: 97%

“…10 Eventually, the losses will result in bouncing modes of smaller amplitude than the static deflection of the bow hairs, h static ¼ C static ' À x ð Þ=T'x. The bow will then have insufficient energy and vibrational amplitude for the bow to bounce off the string.…”

Section: B Off the String Modesmentioning

confidence: 99%

“…An excellent overview of the importance of such modes when playing short repeated bowed notes is given by Guettler in a contributed chapter in The Science of String Instruments. 10 A. On-string bouncing modes Askenfelt 3 identified and published the first measurements of the on-string bouncing modes in the range 7-30 Hz depending on hair tension, stick moment of inertia I, and string contact position x from the frog-end of the bow hair. Bissinger 5 also investigated such modes in addition to offthe-string bouncing modes, which increased in repetition rates from 5 to 11 Hz over a few second interval, as the bounce energy was dissipated.…”

Section: Bouncing Bow Modesmentioning

confidence: 99%

“…Guettler has also contributed an important chapter on the bow and bowed string in The Science of String Instruments. 10 Because the diameter of the bow stick is small compared with the wavelength of the radiated sound, significant direct radiation from the bow is unlikely. This is easily demonstrated by striking the tensioned bow hair against the edge of any heavy body.…”

Section: Introductionmentioning

confidence: 99%

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Violin bow vibrations

Gough

2012

The Journal of the Acoustical Society of America

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The modal frequencies and bending mode shapes of a freely supported tapered violin bow are investigated by finite element analysis and direct measurement, with and without tensioned bow hair. Such computations are used with analytic models to model the admittance presented to the stretched bow hairs at the ends of the bow and to the string at the point of contact with the bow. Finite element computations are also used to demonstrate the influence of the lowest stick mode vibrations on the low frequency bouncing modes, when the hand-held bow is pressed against the string. The possible influence of the dynamic stick modes on the sound of the bowed instrument is briefly discussed.

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“…(10). Figure 8 illustrates the predicted frequency dependencies of the real (in-phase) component of the admittance inline with the driving force.…”

Section: E Influence Of Bow On Radiated Soundmentioning

confidence: 97%

Section: B Off the String Modesmentioning

confidence: 99%

Section: Bouncing Bow Modesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Violin bow vibrations

Gough

2012

The Journal of the Acoustical Society of America

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“…His work was continued on by Saunders [ 4 ], Cremer [ 5 ], Schelleng [ 6 ], Moral [ 7 ] and Hutchins [ 3 ], culminating in further breakthroughs in recent years thanks to works by Dunnwald [ 8 ], Jansson [ 9 , 10 , 11 ], Harris [ 12 ], Buen [ 13 , 14 ], Morset [ 15 ], Bissinger [ 16 , 17 ], and Curtin and Rossing [ 18 ]. Zwicker [ 19 ] and Stepanek [ 20 ] were two of the first musicologists to correlate spectral relations to the psychoacoustic aspects of sound quality, while Guettler published groundbreaking work on the properties of rosin and how they may affect stick-slip events during playing [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical Mechanical Planarization and Old Italian Violins

2018

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Previous studies have shown that spectral analysis based on force data can elucidate fundamental physical phenomena during chemical mechanical planarization (CMP). While it has not been literally described elsewhere, such analysis was partly motivated by modern violinmakers and physicists studying Old Italian violins, who were trying to discover spectral relations to sound quality. In this paper, we draw parallels between violins and CMP as far as functionality and spectral characteristics are concerned. Inspired by the de facto standard of violin testing via hammer strikes on the base edge of a violin’s bridge, we introduce for the first time, a mobility plot for the polisher by striking the wafer carrier head of a CMP polisher with a hammer. Results show three independent peaks that can indeed be attributed to the polisher’s natural resonance. Extending our study to an actual CMP process, similar to hammered and bowed violin tests, at lower frequencies the hammered and polished mobility peaks are somewhat aligned. At higher frequencies, peak alignment becomes less obvious and the peaks become more isolated and defined in the case of the polished wafer spectrum. Lastly, we introduce another parameter from violin testing known as directivity, Δ, which in our case, we define as the ratio of shear force variance to normal force variance acquired during CMP. Results shows that under identical polishing conditions, Δ increases with the polishing removal rate.

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Strings for Musical Instruments of the Baroque and Romantic Periods

Bucur¹

2016

Handbook of Materials for String Musical Instruments

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Bows, Strings, and Bowing

Cited by 9 publications

References 6 publications

Violin bow vibrations

Violin bow vibrations

Chemical Mechanical Planarization and Old Italian Violins

Strings for Musical Instruments of the Baroque and Romantic Periods

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