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| BEM Akustik× | Psykoakustisk Maskering× | |
|---|---|---|
| Fagområde | Akustik | Akustik |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1971 | 1961 |
| Ophavsperson≠ | Carlos Brebbia, Robert Butterfield | Eberhard Zwicker |
| Type≠ | Computational simulation for acoustics | Perceptual model for audio systems |
| Oprindelig kilde≠ | Burton, A. J., & Miller, G. F. (1971). The application of integral equation methods to the numerical solution of some exterior boundary-value problems. Proceedings of the Royal Society A, 323(1553), 201–210. DOI ↗ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 |
| Aliasser | BEM, boundary element method, indirect BEM, direct BEM | masking, temporal masking, frequency masking, auditory masking |
| Relaterede | 5 | 5 |
| Resumé≠ | The Boundary Element Method (BEM) is a numerical technique for solving acoustic wave equations in complex geometries. Unlike finite element methods (FEM) that mesh entire volumes, BEM discretizes only the acoustic boundaries (surfaces), reducing computational cost and memory. First applied to acoustics by Burton and Miller in 1971, BEM is widely used for predicting room acoustics, exterior noise radiation, and acoustic scattering without the need for volumetric meshing. | Psychoacoustic masking describes how the human auditory system suppresses the perception of weak sounds in the presence of stronger sounds. Formalized by Eberhard Zwicker in the 1960s, masking is a fundamental phenomenon in hearing and the basis for perceptual audio coding (MP3, AAC, OPUS). Masking occurs both in frequency (spectral masking) and time (temporal masking), and understanding these effects enables efficient audio compression and realistic sound design. |
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