METHOD AND APPARATUS FOR DETERMINING THE LEAST INTEGER NUMBER OF BITS REQUIRED TO REPRESENT NON-DIFFERENTIABLE GAIN VALUES FOR COMPRESSING A REPRESENTATION OF A DATA FRAME HOA Russian patent published in 2020 - IPC G10L19/08 

FIELD: computer equipment.

SUBSTANCE: invention relates to means for determining the least integer number of bits required to represent non-differentiable gain values. Each channel signal in each frame contains a group of sampling values. Each channel signal of each HOA data frame is assigned a differentiated amplification factor value. At that, differentiated value of amplification coefficient causes change of amplitudes of first values of sample of channel signal in current frame ((k – 2)) of HOA data in relation to second channel signal sampling values in previous frame ((k – 3)) of HOA data. Resultant signals of the channels with an adapted gain are encoded in the coding device. At that, representation of HOA data frame is performed in spatial domain for O signals w_j(t) of virtual loudspeakers, wherein the positions of the virtual loudspeakers lie on the unit sphere and must be uniformly distributed over that single sphere.

EFFECT: technical result consists in improvement of accuracy of determining the required number of bits.

18 cl, 6 dwg