
196 Friction-Induced Vibration and Self-Organization
effect of temperature (Askenfelt 1989; Woodhouse, Schumacher, and Garoff
2000; Sheng 2008). The effects are coupled with the actual vibration of the
string. It is also noted that musical sound generation in a violin is a complex
process. The vibrations of the string are transferred through the “bridge”
into the body of the instrument, which acts as a resonator amplifying spe-
cic frequencies.
Friction-induced vibrations play a role also in certain musical instru-
ments without strings. Akay (2002) mentioned that the cuica, the Brazilian
friction drum, presents an example of an instrument in wh ...