Sound Spatialization by Higher Order Ambisonics: Encoding and Decoding a Sound Scene in Practice from a Theoretical Point Of View


Rozenn Nicol


An overview of HOA technology is presented. First, HOA defines a format of spatial audio which has many attractive properties, such as scalability and flexibility. Besides, this format is independent of the encoding (i.e. microphone signals) and decoding (i.e. loudspeaker signals) formats. Second, HOA provides tools to record, or create, and render a spatial sound scene. These tools, which rely on a specific encoding and decoding of spatial information, will be analysed and discussed from a both theoretical and practical point of view. Third, the final issue is the assessment of the virtual sound scene that is (re)created by HOA. The toolkit of available methodologies and criteria is examined.

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