Pitch Discrimination in Background Noises up to 95 dB SPL

Abstract

A pool of eight experienced subjects was used in studies of pitch discrimination at 1 kHz in quite loud background noises (up to 95 dB per octave) . Differential thresholds (DF) were collected for both the pitch-memory and pitch-modulation auditory tasks, which differed significantly in absolute DF and in the effects of overall loudness and in signal/noise ratio (S/N). Control experiments showed that neither the S/N at 50% detection, nor the DF, deteriorated over at least a 20-min listening period, and probably indefinitely, and that the development of a subjectively 'noisy' quality to a continuous pure tone does not necessarily render impossible quite good DF.

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Document Details

Document Type
Technical Report
Publication Date
Jan 18, 1973
Accession Number
AD0763399

Entities

People

  • J. Donald Harris
  • Mary A. Libby
  • Virginia A. Morse

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Attenuators
  • Background Noise
  • Biomedical Research
  • Detection
  • Discrimination
  • Ear
  • Frequency
  • Generators
  • Intensity
  • Loudness
  • Modulation
  • Navy
  • Noise Generators
  • Pitch Discrimination
  • Standards
  • Switches
  • White Noise

Readers

  • Acoustics.
  • Mathematics or Statistics
  • Speech Processing/Speech Recognition.