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- W799340904 abstract "DERIVATION OF MOVING-COIL LOUDSPEAKER PARAMETERS USING PLANE WAVE TUBE TECHNIQUES Brian E. Anderson Department of Physics and Astronomy Master of Science Small-signal moving-coil loudspeaker driver parameters are traditionally derived through electrical impedance measurement techniques. These parameters are commonly called Thiele/Small parameters, after Neville Thiele and Richard Small who are credited with developing industry-standard loudspeaker modeling techniques. However, because loudspeaker drivers are electro-mechano-acoustical transducers, it should be possible to measure their parameters in physical domains other than the electrical domain. A method of measuring loudspeaker parameters from the acoustical domain will be developed. The technique uses a plane wave tube to measure acoustical properties of a baffled driver under test. Quantities such as the transmission loss through the driver are measured for a driver placed in the tube using the two-microphone transfer-function technique. Models have been developed to curve fit the resulting data, from which small-signal loudspeaker parameters are subsequently derived. This thesis discusses the acoustical measurement theory, apparatus, and system modeling methods (via equivalent circuits). It also compares measured parameters to those derived using electrical techniques. Parameters derived from both approaches are compared with reference values to establish bias errors. Sequential measurements are also compared to reveal random errors in the derivation processes." @default.
- W799340904 created "2016-06-24" @default.
- W799340904 creator A5084754151 @default.
- W799340904 date "2004-01-01" @default.
- W799340904 modified "2023-09-23" @default.
- W799340904 title "Derivation of Moving-Coil Loudspeaker Parameters Using Plane Wave Tube Techniques" @default.
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