Distortion Analyzer-A New Tool for Assessing and Improving Electrodynamic Transducer
Wolfgang Klippel · Journal of the Audio Engineering Society · 2000
The dominant nonlinear distortions in loudspeakers, headphones and other actuators are predictable and are closely related with the general principle, particular design, materials and assembling techniques applied to the transducer. The Distortion Analyzer uses novel system identification techniques to measure the large signal parameters of the expanded loudspeaker model, the instantaneous state signals and the distortion components generated by each nonlinearity. This information is crucial for assessing the performance of transducer in the large signal domain as well as for finding the physical causes of the distortion to improve the transducer in respect with sound quality, weight, size and cost.