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| Schall-Transmission-Klasse× | Akustisches Raytracing× | |
|---|---|---|
| Fachgebiet | Akustik | Akustik |
| Familie | Process / pipeline | Process / pipeline |
| Entstehungsjahr≠ | 1961 | 1979 |
| Urheber≠ | ASTM International | James Allen, David Berkley |
| Typ≠ | Building partition acoustic rating | Computational room acoustics method |
| Wegweisende Quelle≠ | ASTM E413-16 (2016). Classification for Rating Sound Insulation. American Society for Testing and Materials. link ↗ | Allen, J. B., & Berkley, D. A. (1979). Image method for efficiently simulating small-room acoustics. Journal of the Acoustical Society of America, 65(4), 943–950. DOI ↗ |
| Aliasnamen≠ | STC, sound transmission loss, acoustic isolation | ray tracing, geometric acoustics, image source method, sound ray propagation |
| Verwandt | 5 | 5 |
| Zusammenfassung≠ | Sound Transmission Class (STC) is a single-number rating used to describe how well building elements (walls, doors, windows) reduce sound transmission between adjacent spaces. Standardized by ASTM International and ISO, STC is calculated from sound transmission loss (STL) measurements across the speech frequency range (125 Hz–4 kHz). It is the primary metric used in building codes, product specifications, and acoustic design to ensure privacy, noise control, and occupant comfort. | Acoustic ray tracing is a computational technique for predicting sound propagation in rooms by treating acoustic energy as rays that reflect specularly off surfaces. Formalized by Allen and Berkley in 1979 via the image source method, ray tracing is one of the most computationally efficient methods for room acoustic simulation, especially for early and mid-reflections. It is widely used in audio engineering, architectural acoustics, and interactive spatial audio for virtual environments. |
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