Physical parameters of the violin bridge changed by active control
Paramètres physiques du chevalet de violon changés par contrôle actif
Résumé
On the input admittance of many violins a typical broad frequency peak, called "bridge hill" appears around 2.5 kHz. The physical parameters of a violin bridge have a significant influence on this feature, and then on the tonal colouration of the produced sound. The effect of the bridge characteristics (mass, stiffness and foot spacing) on the frequency response have been revealed by using bridge models through several studies. Here the parameters of the bridge response are changed, by applying an active control method. Such a correction, very useful in noise reduction, enables to change separately the position and the shape of the bridge hill. It is first tested on a simplified bridge model, then on a real bridge by placing 2 actuators and an accelerometer at strategic positions.
Fichier principal
2008Acoustics08_Physical_parameters_of_the_violin_bridge.pdf (657.4 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...