Comparer des méthodes

	Analyse vectorielle indépendante	Ambisonics	Fonction de transfert liée à la tête
Domaine	Physique appliquée	Physique appliquée	Physique appliquée
Famille	Process / pipeline	Process / pipeline	Process / pipeline
Année d'origine	2007	1973	1989
Auteur d'origine	Tae-Won Lee, Mark Lewicki, Terrence Sejnowski	Michael Gerzon	Fredrik Wightman, Doris Kistler
Type	Multivariate matrix decomposition algorithm	Spatial audio encoding and reproduction technique	Frequency-dependent spatial filtering function
Source fondatrice	Lee, T. W., Lewicki, M. S., & Sejnowski, T. J. (2007). Independent Component Analysis for Source Localization in Biomedical Signals. In Proc. IEEE Int. Conf. Acoust. Speech Signal Process., pp. 97-100.	Gerzon, M. A. (1973). Periphony: with-height sound reproduction. Journal of the Audio Engineering Society, 21(1), 2-10.	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.
Alias	IVA, multivariate ICA, vector blind source separation	spatial audio, B-format, ambisonic recording	HRTF, spatial hearing, binaural filter
Apparentées	3	3	3
Résumé	Independent Vector Analysis (IVA) is a multivariate extension of Independent Component Analysis that jointly separates multiple datasets while maintaining dependencies within each dataset. Developed by Lee, Lewicki, and Sejnowski in the 2000s, IVA is used for blind source separation in multi-channel audio, brain imaging, and signal processing. It exploits both the independence between sources and correlations within frequency bands or time-frequency structures.	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.