OPTIMIZING AUDIO DELIVERY FOR VIRTUAL REALITY APPLICATIONS Russian patent published in 2023 - IPC H04N21/81 H04N21/6587 H04N21/2343 H04N21/439 G06F3/01 G02B27/01 

FIELD: audio coding.

SUBSTANCE: at least one audio stream and/or one audio element in the audio stream and/or one adaptation set is requested based on at least the current orientation of the user's head and/or user movement data and/or user interaction metadata. At least one scene is associated with at least one set of N audio elements, N≥2, with each audio element associated with a position and/or area in the environment. Said at least one set of N audio elements is provided in at least one high bitrate and/or quality level representation. At least one said set of N audio elements is provided in at least one low bitrate and/or quality level representation, where the at least one representation is obtained by processing N audio elements to obtain a smaller number M of audio elements (M<N), associated with a position or region close to the position or region of the N audio elements. A higher quality representation for the audio elements is requested if the audio elements are more relevant to the user's current virtual position in the scene.

EFFECT: increased efficiency of audio encoding.

50 cl, 19 dwg