1986 | OriginalPaper | Buchkapitel
The Spherical Harmonic Analysis of Free Wave Fields in Practice
verfasst von : S. M. Baxter, C. L. Morfey
Erschienen in: Angular Distribution Analysis in Acoustics
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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As we saw in Chapter Two, a free wave field used to model a spatially complex, random wave field may be completely described by its plane wave weighting function. Associated with the weighting function are such quantities as the energy flow directivity in the field. However, the weighting function is not directly observable, and must be inferred from measurements of complex cross-spectral density (CCSD).