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A. Petosic, I. Djurek, and D. Djurek, "Calorimetric Evaluation of Intrinsic Friction in the Loudspeaker Membrane," Paper 7593, (2008 October.). doi: A. Petosic, I. Djurek, and D. Djurek, "Calorimetric Evaluation of Intrinsic Friction in the Loudspeaker Membrane," Paper 7593, (2008 October.). doi:
Abstract: Friction losses in the vibrating system of an electrodynamic loudspeaker are represented by the intrinsic friction Ri which enters the equation of motion, and these losses are accompanied by irreversible release of the heat. A method is proposed for measurement of the friction losses in the loudspeaker's membrane by measurement of the thermocouple temperature probe glued to the membrane. Temperature on the membrane surface fluctuates stochastically as a result of thermo-elastic coupling in the membrane material. Evaluation of the amplitude in the temperature fluctuations enables an absolute and direct evaluation of intrinsic friction Ri entering friction force F=Ri•v(x), irrespective of the nonlinearity type and strength associated with the loudspeaker operation.

@article{petosic2008calorimetric,
author={petosic, antonio and djurek, ivan and djurek, danijel},
journal={journal of the audio engineering society},
title={calorimetric evaluation of intrinsic friction in the loudspeaker membrane},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},} @article{petosic2008calorimetric,
author={petosic, antonio and djurek, ivan and djurek, danijel},
journal={journal of the audio engineering society},
title={calorimetric evaluation of intrinsic friction in the loudspeaker membrane},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={friction losses in the vibrating system of an electrodynamic loudspeaker are represented by the intrinsic friction ri which enters the equation of motion, and these losses are accompanied by irreversible release of the heat. a method is proposed for measurement of the friction losses in the loudspeaker's membrane by measurement of the thermocouple temperature probe glued to the membrane. temperature on the membrane surface fluctuates stochastically as a result of thermo-elastic coupling in the membrane material. evaluation of the amplitude in the temperature fluctuations enables an absolute and direct evaluation of intrinsic friction ri entering friction force f=ri•v(x), irrespective of the nonlinearity type and strength associated with the loudspeaker operation.},}

TY - paper
TI - Calorimetric Evaluation of Intrinsic Friction in the Loudspeaker Membrane
SP - EP -
AU - Petosic, Antonio
AU - Djurek, Ivan
AU - Djurek, Danijel
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008 TY - paper
TI - Calorimetric Evaluation of Intrinsic Friction in the Loudspeaker Membrane
SP - EP -
AU - Petosic, Antonio
AU - Djurek, Ivan
AU - Djurek, Danijel
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008
AB - Friction losses in the vibrating system of an electrodynamic loudspeaker are represented by the intrinsic friction Ri which enters the equation of motion, and these losses are accompanied by irreversible release of the heat. A method is proposed for measurement of the friction losses in the loudspeaker's membrane by measurement of the thermocouple temperature probe glued to the membrane. Temperature on the membrane surface fluctuates stochastically as a result of thermo-elastic coupling in the membrane material. Evaluation of the amplitude in the temperature fluctuations enables an absolute and direct evaluation of intrinsic friction Ri entering friction force F=Ri•v(x), irrespective of the nonlinearity type and strength associated with the loudspeaker operation.