MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202648095895 A) filed by Dolby International Ab on August 07, 2026, for Method And Apparatus For Generating From A Coefficient Domain Representation Of Hoa Signals A Mixed Spatial/Coefficient Domain Representation Of Said Hoa Signals.
Inventors include Krueger, Alexander; and Kordon, Sven.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: ABSTRACT METHOD AND APPARATUS FOR GENERATING FROM A COEFFICIENT DOMAIN REPRESENTATION OF HOA SIGNALS A MIXED SPATIAL/COEFFICIENT DOMAIN REPRESENTATION OF 5 SAID HOA SIGNALS There are two representations for Higher Order Ambisonics denoted HOA: spatial domain and coefficient domain. The invention generates from a coefficient domain representation a mixed spatial/coefficient domain representation, wherein the number of said HOA signals can be variable. A vector of coefficient domain signals 10 is separated into a vector of coefficient domain signals having a constant number of HOA coefficients and a vector of coefficient domain signals having a variable number of HOA coefficients. The constant-number HOA coefficients vector is transformed to a corresponding spatial domain signal vector. In order to facilitate high- quality coding, without creating signal discontinuities the variable-number 15 HOA coefficients vector of coefficient domain signals is adaptively normalised and multiplexed with the vector of spatial domain signals. 25
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