Abstract
The efficient computation of transient fields radiated by
non-harmonic source distributions is a problem relevant in numerous
areas of acoustics. This paper presents an efficient
easily-implemented method for the generation of time-dependent
spherical harmonic expansions for arbitrary sources, which can be
used to compute the transient radiated field at arbitrary points
outside the source domain. The method depends on the theory of
time-domain spherical harmonic expansions and the solution of
Vandermonde systems. Results are presented demonstrating the
efficiency and accuracy of the method with respect to full
evaluation of the field radiated by a randomized source
distribution.
| Original language | English |
|---|---|
| Pages (from-to) | 630 |
| Journal | Journal of the Acoustical Society of America |
| Volume | 139 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2016 |
Keywords
- computational acoustics
- transient signals
- time domain spherical harmonics
