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The theory of bounded-ripple loudspeaker systems

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1 Author(s)
M. Lampton ; University of California, Berkeley, CA, USA

This paper describes an investigation of the low-frequency performance of an electrodynamic direct radiator loudspeaker mounted in a vented or an unvented enclosure. The goal of the investigation is to determine if the maximally flat system (see Thiele [1] or Lea and Lampton [2]) can be improved by permitting small uniformly bounded departures from flat response. A figure of merit is defined that permits systems of different types to be compared. A class of bounded-ripple loudspeaker systems is discussed; these systems have figures of merit at least as good as that of the triple point system. The numerical results of the investigation are presented graphically. A procedure is described with which maximally flat or bounded-ripple systems satisfying given performance specifications may be designed.

Published in:

IEEE Transactions on Audio and Electroacoustics  (Volume:20 ,  Issue: 5 )