On the physical meaning of the power factor in acoustics (Articolo in rivista)

Type
Label
  • On the physical meaning of the power factor in acoustics (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1121/1.3664051 (literal)
Alternative label
  • Domenico Stanzial, Giorgio Sacchi and Giuliano Schiffrer (2012)
    On the physical meaning of the power factor in acoustics
    in The Journal of the Acoustical Society of America
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Domenico Stanzial, Giorgio Sacchi and Giuliano Schiffrer (literal)
Pagina inizio
  • 269 (literal)
Pagina fine
  • 280 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.acousticalsociety.org (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 131 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Italian National Research Council, Institute of Acoustics and Sensors \"O. M. Corbino,\" c/o Physics Department, University of Ferrara, Room C002, v. Saragat 1, I-44100 Ferrara, Italy (literal)
Titolo
  • On the physical meaning of the power factor in acoustics (literal)
Abstract
  • Following recent advancements in the study of time-averaged properties of energy propagation in linear acoustic fields, the well established concept of power factor known from the electric AC circuits analysis, is here extended to acoustics. This allows our outline of a complete acousto-electro- mechanic analogy, where the fundamental physical concept of energy trajectory is assimilated to a continuous line network of electric circuits, and the complex intensity vector field is defined by means of three special spatial directions: the tangent, the principal normal and the binormal direction at each point of any energy path. The notions of sound energy conductance and susceptance are then introduced and their relationship with complex intensity is highlighted. Finally, the frequency distributions of the defined quantities are measured in different acoustical contexts, thus illustrating their practical utility for advanced intensimetric metrology. (literal)
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