Numerical simulation of wolf-note in string instruments using string-body coupled model
Kei Ogura, Koichi Mizutani, Naoto Wakatsuki · 2010
Large size string instrument, such as cello and contrabass, can ingenerate phenomenon called ‘wolf-note’. When we play a note of specific pitch, the body of the instrument strongly vibrates and the bow leaps on a string continuously, which makes it difficult to bow stably. In order to avoid this phenomenon, small equipments so called `wolf-killer’ are often utilized. Such equipments have been empirically devised and it causes some troubles like timbre degradation. Consequently, we are trying to figure out the cause of the wolf-note and control it without significant effect. In this paper, we consider a model in which a string and a body are coupled at a bridge. Wolf-note is numerically reproduced using this model. The model is experimentally validated.