Accession Number:

AD0611174

Title:

THEORETICAL STUDIES OF METHODS OF GENERATING RANDOM WAVES FROM HARMONIC SOURCES

Descriptive Note:

Rept. for May 1963-Jun 1964

Corporate Author:

GENERAL TECHNOLOGY CORP ELGIN IL

Personal Author(s):

Report Date:

1964-12-01

Pagination or Media Count:

37.0

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.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE