Klippel, Auralization of Signal Distortion (PART 2), 1 AURALIZATION OF SIGNAL DISTORTION IN AUDIO SYSTEMS

A new method is presented for the auralization of selected distortion components generated by regular nonlinearities inherent in loudspeaker systems. Contrary to the generic approach presented in the first part the alternative approach presented here exploits the results of lumped parameter modeling in the state space. A mixing device generates a virtual output signal comprising nonlinear distortion attenuated or enhanced by a user-defined scaling factor. The auralization output can be used for systematic listening tests or perceptive modeling to determine audibility thresholds and to assess the impact on sound quality of the dominant nonlinearities in loudspeakers. Klippel, Auralization of Signal Distortion (PART 2), 3 Parts (cone, spider, motor parts) Driver (woofer, tweeter) Listener System (driver + Xover + room) Questions addressed in this paper • How to combine physical measurement and listening? • How to define the sound quality required for the target application? • How to measure the audibility threshold of signal distortion (even if the distortion should be inaudible)? • How to measure the relationship between audibility and annoyance? • How to get the best performance-cost ratio? • How to organize time-effective listening tests? • How to simplify the communication between customer and supplier, development, marketing and manufacturing? • How to assess each loudspeaker nonlinearity separately