Quasistatic effective parameters of vibrating elements of electro-acoustic transducers

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Authors

  • Andrzej B. DOBRUCKI Institute of Telecommunication and Acoustics Wrocław Technical University, Poland
  • Cecylia SZMAL Institute of Telecommunication and Acoustics Wrocław Technical University, Poland

Abstract

This paper presents an approximate theory of determining effective parameters determining of surface elements of electro-acoustic transducers. It considers the distribution of displacements of these elements due to a steady load. Furthermore, a critical analysis of existing definitions of active surface was carried out and a new definition was proposed. It is a generalization of hitherto applied definitions. Equivalence of these definitions was proved. Examples of effective parameters calculations for systems with known accurate solutions are given. High consistency of proposed approximate methods with these solutions was demonstrated. Moreover examples of calculations of quasistatic effective parameters of systems previously solved with approximate methods are given.

References

[1] A. DOBRUCKI, Foundations of acoustics (in Polish), Wydawnictwo Politechniki Wroctawskiej, 1987.

[2] A. DOBRUCKI, C. SZMAL, Calculations of active parameters of loudspeaker membranes and suspensions (in Polish), Proc. XXXIII OSA, Rzeszów 1986, 47-50.

[3] A. DOBRUCKI et al., Computer simulation and investigations of loudspeaker suspension and suspension of the voice-coil (in Polish), ITA Politechniki Wrocławskiej, Raport 1-28/SPR-019/86.

[4] S. KALISKI [ed], Vibrations and waves in solids (in Polish), PWN, Warszawa 1966.

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