AES New York 2015
Product Development Track Event PD8
Saturday, October 31, 10:45 am — 12:15 pm (Room 1A13)
Product Development: PD8 - Adaptive Loudspeaker Control—An Application Tutorial
Presenter:Gregor Hoehne, Klippel GmbH - Dresden, Germany
Abstract:
Adaptive control provides new potential for speaker design. Digital preprocessing of the electrical input signal can used to equalize, linearize, stabilize, and actively protect the transducer against overload. The control technology allows the exploitation of all hardware resources, which makes the transducer smaller, lighter, and more cost effective. This workshop gives an insight into adaptive loudspeaker control by presenting the Klippel Control Technology and demonstrates how it can be utilized by transducer and system engineers. An introduction into the theory of adaptive nonlinear control is given, but the focus lies on how the technique can be integrated into a system design. This comprises the selection of suitable transducers, the derivation of protection limits and the adjustment of the system alignment. A strong emphasis lies on the evaluation of an adaptive controlled loudspeaker system. Various methods for evaluating the transducer protection system, the reduction of nonlinear distortion and the compensation of ageing-effects are discussed and demonstrated.
