AES Milan 2018
Friday, May 25, 14:30 — 16:00 (Scala 3)
T23 - Optimizing Transducer Design for Systems with Adaptive Nonlinear ControlPresenters:
Gregor Höhne, Klippel GmbH - Dresden, Germany
Marco Raimondi, STMicroelectronics SRL - Cornaredo (MI), Italy
Modern loudspeakers increasingly incorporate digital signal processing, amplification and the transducer itself in one unit. The utilized algorithms not only comprise linear filters but adaptively control the system, deploying measured states and complex models. Systems with adaptive nonlinear control can be used to equalize, stabilize, linearize, and actively protect the transducer. Thus, more and more demands can be taken care of by digital signal processing than by pure transducer design, opening new degrees of freedom for the latter. The tutorial focuses on how this freedom can be utilized to design smaller and more efficient loudspeaker systems. Examples are given for how existing transducer designs can be altered to increase their efficiency and which new challenges arise when driving speaker design to its limits.