Measuring Loudspeaker Constants by a Transient Method

Jacobsen O. Measuring Loudspeaker Constants by a Transient Method. J Audio Eng Soc. 1982;30(3):112-116. Available from: https://aes.org/publications/elibrary-page/?id=3854

@article{Jacobsen1982_3854,
  author = {Jacobsen, Oluf},
  title = {{Measuring Loudspeaker Constants by a Transient Method}},
  journal = {Journal of the Audio Engineering Society},
  volume = {30},
  number = {3},
  pages = {112--116},
  year = {1982},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3854}
}

TY  - JOUR
TI  - Measuring Loudspeaker Constants by a Transient Method
AU  - Jacobsen, Oluf
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 30
IS  - 3
SP  - 112
EP  - 116
PY  - 1982
DA  - 1982/03/06
UR  - https://aes.org/publications/elibrary-page/?id=3854
PB  - Audio Engineering Society
LA  - en
AB  - The voltage response at the input terminals of a loudspeaker and the sound pressure response at the center of the diaphragm to an input step current are recorded in the form of an oscillogram or a YT plot. From this the elements of the equivalent electrical network and the force factor can be determined, and the derived parameters calculated. The method is well suited for on-line electronic data processing which would make the measurement a split-second matter. The force factor can, alternatively, be determined from a steady-state measurement of the input voltage and the sound pressure. Results from the method described and from a conventional steady-state method are compared. They differ by 5% at most, except for the values for the mechanical resistance, which are all higher for the transient method, by 10% on the average.
ER  -