Averaged Sound Transmission in Range-Dependent Channels.

Abstract

An integral formula is derived as an estimate of the averaged, steady-state transmission ratio for two points in a channel where the environmental parameters vary slowly with range. The derivation is based on the theory of ray acoustics with lossy specular reflection from the boundaries. The averaging eliminates all but gradual changes with range of the transmission loss (TL); dependence on the depth of each point is retained. The formulation is applied to an isogradient channel with constant bottom slope; analytical approximations for TL are derived. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 28, 1972
Accession Number
AD0742490

Entities

People

  • Preston W. Smith Jr.

Organizations

  • BBN Technologies

Tags

DTIC Thesaurus Topics

  • Acoustic Phenomena
  • Acoustics
  • Boundaries
  • Integrals
  • Losses
  • Physics
  • Reflection
  • Sound Transmission
  • Specular Reflection
  • Steady State
  • Transmission Loss
  • Wave Phenomena

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Calculus or Mathematical Analysis
  • Mathematics or Statistics