columbus · Theoretical Studies of Methods of Generating Random Waves from Harmonic Sources

Theoretical Studies of Methods of Generating Random Waves from Harmonic Sources

Title: Theoretical Studies of Methods of Generating Random Waves from Harmonic Sources
Date: 1964
Index Abstract: Coming Soon
Photo Quality: Not Needed
Report Number: FDL TDR 64-133
Creator: Samuels, J. C.
Corporate Author: General Technology Corporation
Laboratory: Air Force Flight Dynamics Laboratory
Extent: 37
Identifier: AD0611174
Access Rights: CFSTI
Distribution Classification: 1
Contract: AF 33(657)-10945
DoD Project: 4437
DoD Task: 443705
DTIC Record Exists: No
Distribution Change Authority Correspondence: None
Abstract: This report is concerned with the approximation of acoustical noise fields by the use of modulated pure tone sources. Given a specific random signal the methods of orthogonal expansion and Fourier expansion are studied. The integral equation arising from the orthogonal expansion is solved for the normal functions when: a) the power spectrum is given as the ratio of two polynomials, b) Markoff Autocorrelation function, c) stationary band limited Gaussian white noise of mean zero, d) band limited stationary normal white noise on a finite interval, e) white noise. Deterministic and random frequency and amplitude modulation and random switching are examined as ways to broaden spectral components.
Report Availability: Full text available
Date Issued: 1964-12
Provenance: AFRL/VACA
Type: report
Format: 1 online resource