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The bowed string
KTH, Superseded Departments, Speech Transmission and Music Acoustics.
2002 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Of the many waveforms the bowed string can assume, theso-called "Helmholtz motion" (Helmholtz 1862) gives the fullestsound in terms of power and overtone richness. The developmentof this steady-state oscillation pattern can take manydifferent paths, most of which would include noise caused bystick-slip irregularities of the bow-string contact. Of thefive papers included in the thesis, the first one shows, notsurprisingly, that tone onsets are considered superior when theattack noise has a very limited duration. It was found,however, that in this judgment thecharacterof the noise plays an important part, as thelistener’s tolerance of noise in terms of duration isalmost twice as great for "slipping noise" as for "creaks" or"raucousness" during the tone onsets. The three followingpapers contain analyses focusing on how irregular slip-sticktriggering may be avoided, as is quite often the case inpractical playing by professionals. The fifth paper describesthe triggering mechanism of a peculiar tone production referredto as "Anomalous Low Frequencies" (ALF). If properly skilled, aplayer can achieve pitches below the normal range of theinstrument. This phenomenon is related to triggering wavestaking "an extra turn" on the string before causing thestring’s release from the bow-hair grip. Since transverseand torsional propagation speeds are both involved, twodifferent sets of "sub-ranged" notes can be produced this way.In the four last papers wave patterns are analysed andexplained through the use of computer simulations.

Key words:

Key words:

Bowed string, violin, musicalacoustics, musical transient, anomalous low frequencies,Helmholtz motion

Place, publisher, year, edition, pages
Institutionen för talöverföring och musikakustik , 2002. , 28 p.
Series
Trita-TMH, 02:3
Keyword [en]
Bowed string, violin, musical acoustics, musical transient, anomalous low frequencies, Helmholtz motion
Identifiers
URN: urn:nbn:se:kth:diva-3361ISBN: 91-7283-279-7 (print)OAI: oai:DiVA.org:kth-3361DiVA: diva2:9153
Public defence
2002-06-07
Note
NR 20140805Available from: 2002-06-05 Created: 2002-06-05Bibliographically approved

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fulltext(709 kB)2489 downloads
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1d0c968ee44366cd7d92c63f876be884c91350647c387f58951b93bfe7ec5a2b4b45ea08
Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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