DocumentCode
1092959
Title
Time-domain measurement of loudspeaker driver parameters
Author
Leach, W. Marshall, Jr. ; Schafer, Ronald W. ; Barnwell, Thomas P., III
Author_Institution
Georgia Institute of Technology, Atlanta, GA, USA
Volume
27
Issue
6
fYear
1979
fDate
12/1/1979 12:00:00 AM
Firstpage
734
Lastpage
739
Abstract
A new method for the measurement of the Thiele-Small small-signal parameters of a moving-coil electromagnetic transducer driver is described. The technique is based on a time-domain analysis of the transient response of the loudspeaker voice-coil circuit to a current step of excitation. By sampling the damped sinusoidal transient generated by such an excitation, the loudspeaker parameters can be calculated from a linear predictive analysis of the recorded data. The technique has been implemented with a digital computer and measurement examples are presented. The method is simple and can be implemented with a microprocessor configuration for rapid assembly line testing.
Keywords
Driver circuits; Electromagnetic measurements; Electromagnetic transients; Loudspeakers; Microprocessors; Sampling methods; Time domain analysis; Transducers; Transient analysis; Transient response;
fLanguage
English
Journal_Title
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
0096-3518
Type
jour
DOI
10.1109/TASSP.1979.1163298
Filename
1163298
Link To Document