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Spherical Waves, Sources, and Multipoles

  • Eugen Skudrzyk

Abstract

Sound rays, sound beams, plane waves, and cylindrical waves are possible only near a sound source. According to Huygen’s principle, every point in a wave front acts as a secondary source and propagates energy in all directions. This spreading out of the sound energy leads to a divergence of the sound waves so that, eventually, at great distances from the source, all sound waves become spherical waves. From a great distance, every sound source appears as the center of outgoing spherical waves.

Keywords

Volume Flow Sound Pressure Sound Source Radiation Resistance Sound Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 1971

Authors and Affiliations

  • Eugen Skudrzyk
    • 1
  1. 1.Ordnance Research Laboratory and Physics DepartmentThe Pennsylvania State UniversityUniversity ParkUSA

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