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Zur Frage der ,,Ansprache” von Streichinstrumenten

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Abstract:

At the beginning of the striking process there is a statistical number of roof-shaped impulses formed and distributed over the string some of which, with a continuing rise of the bow-pressure, disappear but others increase in height and broaden. At the same tim these impulses become distorted into Helmholtz saw-tooths. Also with increasing bow-pressure these saw-tooths overshoot and become smaller in amplitude and therefore longer. However the over-shooting hinders the development of the fundamental vibration. This leads to the “loaded” response of an instrument. The response is “heavier” the more the soundboard of the instrument is damped and the weaker it is.

Zusammenfassung

Zu Beginn des Anstreichvorganges bildet sich eine Anzahl statistisch auf der Saite verteilter dachförmiger Impulse, von denen bei stetig steigendem Bogendruck einige wieder verschwinden, andere dafür aber höher und breiter werden. Gleichzeitig werden diese Impulse zu Helmholtzschen Sägezähnen verformt. Auch diese Oberschwingungssägezähne werden mit wachsendem Bogendruck weniger und dafür länger. Jedoch behindern die Oberschwingungen die Ausbildung der Grundschwingung. Dadurch entsteht die schwere Ansprache eines Instruments. Die Ansprache ist um so schlechter, je mehr die Decke des Instruments gedämpft, und je weicher sie ist.

Sommaire

Au début du processus d'attaque, il se forme sur la corde tout un ensemble d'impulsions de forme trapézoïdale et statistiquement réparties le long de la corde. Parmi ces impulsions, certaines disparaissent rapidement lorsque la pression de l'archet augmente de manière continue. Quelquesunes, au contraire, s'agrandissent et s'élargissent. Progressivement ces dernières prennent la forme des dents de scie de Helmholtz. Si la pression de l'archet continue de croître encore, ces sur-oscillations en dents de scie diminuent en nombre mais augmentent de longueur. Cependant ces oscillations d'ordre supérieur empêchent la formation de l'oscillation fondamentale. Ce fait explique bien la difficulté de l'attaque d'un instrument. L'attaque sera d'autant plus mauvaise que la table de l'instrument sera plus amortie et faite d'un matériau moins rigide.

Document Type: Research Article

Publication date: November 1, 1980

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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