Thermal-Noise Limit in Delphinid Hearing.

Abstract

In quiet experimental tanks, thermal noise is the dominant noise source above 50 kHz. Evidence indicates that in the frequency range above 50 kHz cetacean auditory thresholds are limited by thermal noise. Data were compared for Tursiops, Phocoena, Inia, and Delphinaptera.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1979
Accession Number
ADA076206

Entities

People

  • C S Johnson

Tags

Communities of Interest

  • Autonomy

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Animals
  • Body Temperature
  • Cetaceans
  • Fluids
  • Frequency
  • Fresh Water
  • Impedance
  • Measurement
  • Porpoises
  • Spectra
  • Standing Wave Ratios
  • Standing Waves
  • Water

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Marine Mammal Biology