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Long wavelength electromagnetic energy that is perceived by humans via hearing. Sound waves travel through air easily and through some other types of materials. Some terms for materials that block or absorb sound waves are: Sound insulation, Acoustical plaster, and Deafening. Sound transmissions that are unpleasant are typically called noise, such as traffic noise, urban noise, etc.

Synonyms and Related Terms


Resources and Citations

  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998