METHOD AND APPARATUS FOR APPLYING DYNAMIC RANGE COMPRESSION TO HIGHER-ORDER AMBIOPHONY SIGNAL Russian patent published in 2025 - IPC G10L19/08 H04S3/00 H04S3/02 

FIELD: physics.

SUBSTANCE: invention relates to a method and apparatus for performing dynamic range compression (DRC) for a signal based on ambiophony, in particular for a signal based on higher order ambition (HOA). DRC control cannot be simply applied to HOA-based signals. Method for performing DRC for an HOA signal comprises converting the HOA signal into a spatial domain, analysing the converted HOA signal and obtaining gain factors applicable for dynamic compression from the analysis results. Gain factors can be transmitted together with the HOA signal. When applying the DRC, the HOA signal is converted to a spatial domain, gains are extracted and multiplied by the converted HOA signal in the spatial domain, wherein a converted HOA signal with gain compensation is obtained. Converted gain-compensated HOA signal is converted back to the HOA-domain, wherein a gain-compensated HOA signal is obtained.

EFFECT: enabling DRC application to HOA signals.

6 cl, 8 dwg, 6 tbl