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. Ecole-doctorale:-mécanique, . Energétique, and . Génie, Acoustique (MEGA) Spécialité : Acoustique RESUME : Dans un environnement naturel, le champ acoustique est complexe (plusieurs sources, différentes positions spatiales, acoustique du lieu,...) et l'écoute est dichotique. La thèse s'est ainsi intéressée à la sonie des champs acoustiques stationnaires, impliquant une ou plusieurs sources, artificielles ou réelles, en champ libre ou dans des acoustiques naturelles. De nouveaux éléments ont été apportés dans la compréhension dont l'information contenue dans les signaux reçus aux oreilles de l'auditeur est combinée pour former un unique