Accession Number:

ADA043827

Title:

Passive Broadband Aural Detection. Part 1. Signal Excess Detection-Range Calculations which Account for the Frequency Dependence of the Sonar Equation.

Descriptive Note:

Final rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

• Chambers,Edford O. , II

Report Date:

1977-08-01

Pagination or Media Count:

37.0

Abstract:

The figure-of-merit form of the sonar equation causes a bias in calculated broadband-detection ranges. The bias is caused by the necessity of treating the figure of merit as if it were concentrated at a single frequency, since only single-frequency--transmission-loss graphs are practically available. A signal-excess form of the sonar equation is used in this report to remove the bias from passive, broadband, aural, detection-range calculations. Author

Descriptors:

• *PSYCHOACOUSTICS
• *AUDITORY PERCEPTION
• MATHEMATICAL MODELS
• SIGNAL PROCESSING
• HIGH FREQUENCY
• HUMANS
• ACOUSTIC DETECTION
• MATHEMATICAL PREDICTION
• BROADBAND
• ACOUSTIC SIGNALS
• RANGE(DISTANCE)
• THRESHOLDS(PHYSIOLOGY)
• EAR
• AUDIO FREQUENCY
• PASSIVE SONAR
• SONAR PERSONNEL

Subject Categories:

• Psychology
• Anatomy and Physiology
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE