Related Experiment Video
Updated: Dec 31, 2025

Construction and Characterization of a Novel Vocal Fold Bioreactor
Published on: August 1, 2014
The prediction of nonlinear resistance and distortion for a miniature loudspeaker with vented cavities
Chengpu Sun1, Fengyan An1, Bilong Liu1
1School of Mechanical & Automobile Engineering, Qingdao University of Technology, No.777 Jialingjiang Road, Qingdao 266520, China.
Abstract:
The nonlinear resistance and its influence on the total harmonic distortion of a miniature loudspeaker with vented cavities are investigated. A method for the prediction of nonlinear resistance is described. In the model, the nonlinear resistance caused by the magnetic gap and the orifices in the back cover of the miniature loudspeaker is taken into account. The nonlinear acoustic resistance is estimated through the electric analogy method, and then it is transformed into the equivalent nonlinear resistance of the vibrating diaphragm. The estimated nonlinear resistance is verified through the Klippel Analyzer measurement. The influence of the nonlinear resistance, mechanical stiffness and force factor on the total harmonic distortion is calculated and compared with the measurements.
Related Concept Videos
Design Example
Linear Approximation in Frequency Domain
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
Design Example: Underdamped Parallel RLC Circuit
Starting with a fixed...
Series RLC Circuit without Source
Characteristics of Series Resonant Circuit
Types of Responses of Series RLC Circuits

