Accession Number:

ADA030543

Title:

The Psychophysical Structure of Complex Underwater Sounds.

Descriptive Note:

Technical rept.,

Corporate Author:

CATHOLIC UNIV OF AMERICA WASHINGTON D C HUMAN PERFORMANCE LAB

Personal Author(s):

Report Date:

1976-09-01

Pagination or Media Count:

33.0

Abstract:

Eight complex passive sonar recordings were selected to represent a range of common natural and man-made underwater sounds. Nine musically experienced and ten musically inexperienced observers rated the similarity of all possible pairs of the eight signals using a five-point scale. These proximity data were decomposed using the INDSCAL multidimensional scaling program into an interpretable three-dimensional perceptual space. Two of these underlying dimensions reflected the overall shape of the 13- octave spectra of the eight signals, while the third was seen to reflect the prominence of a low frequency periodicity present in some signals. The perceptual spaces for musically experienced observers and musically inexperienced observers differed reliably in the relative importance or salience of the three dimensions.

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE