Order Ambisonics

This report presents the study of the spatial audio method called Higher Order Am-bisonics, together with its physical and operational principles. In order to understand what is spatial audio, the human sound localization techniques are explained, and the different systems intended to create a sense of directionality are analyzed and evalu-ated. The traditional methods like stereo or surround are reviewed, as well as spatial audio techniques, such as channel-based binaural and VBAP (panning) systems, and the channel-independent methods WFS and Ambisonics, which are based on the sound field reconstruction. First Order Ambisonics is an encoding method developed mainly by Michael A. Gerzon in the 1970s, based on the premise that the sound field can be represented as a su-perposition of plane waves. Higher Order Ambisonics, developed in the 1990s, extends this approach using more channels, meaning an improvement of the directionality and accuracy in the area where the sound-field is reproduced. As an application of HOA spatialization, a 3D composition with point and extende