Jämför metoder
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| Ambisonics× | Head-Related Transfer Function× | |
|---|---|---|
| Ämnesområde | Tillämpad fysik | Tillämpad fysik |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1973 | 1989 |
| Upphovsperson≠ | Michael Gerzon | Fredrik Wightman, Doris Kistler |
| Typ≠ | Spatial audio encoding and reproduction technique | Frequency-dependent spatial filtering function |
| Ursprungskälla≠ | Gerzon, M. A. (1973). Periphony: with-height sound reproduction. Journal of the Audio Engineering Society, 21(1), 2-10. link ↗ | Wightman, F. L., & Kistler, D. J. (1989). Headphone simulation of free-field listening. I: Stimulus synthesis. The Journal of the Acoustical Society of America, 85(2), 858-867. DOI ↗ |
| Alias | spatial audio, B-format, ambisonic recording | HRTF, spatial hearing, binaural filter |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | Ambisonics is a full-sphere spatial audio encoding and reproduction technique that captures and reproduces three-dimensional sound fields. Developed by Michael Gerzon in the 1970s, it uses spherical harmonics to represent sound at all directions around a central point. Unlike surround systems that use discrete channels, Ambisonics provides a format-agnostic spatial representation that can be rotated, translated, and rendered to any speaker configuration. | The Head-Related Transfer Function (HRTF) describes how the human head, ears, and torso filter sound from different directions. HRTFs capture the acoustical changes that occur as sound travels around the head to reach each ear, enabling the perception of sound location in 3D space. Measured or modeled HRTFs are essential for creating convincing 3D audio through headphones in virtual reality, spatial games, and immersive audio applications. |
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