The blurred cut-off frequency of acoustic horns

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Authors

  • Tomasz ZAMORSKI Institute of Physics of Higher Pedagogical School, Poland

Abstract

On the basis of discussion of the Webster equation the conditions and possibilities of a blurred cut-off frequency for horns of arbitrary geometry were analyzed. The transmission properties of horns in the blurred region were discussed. Subsequently the blurred cut-off frequency was considered for hyperbolic horns of annular cross-section.

References

[1] A. H. BENADE, E. V. JANSSON, On plane and spherical waves horns with nonuniform flare, Acustica, 31, 2, 79-89 (1974).

[2] A. S. DAWYDOW, Quantum mechanics (in Polish), PWN, Warszawa 1967.

[3] S. FLUGGE, H. MARSCHALL, Calculation methods of quantum theory (in Polish), PWN, Warszawa 1958.

[4] A. PUCH, Generalized model of an axial dynamic generator, Archives of Acoustics, 3, 1, 17-34 (1978).