REPRESENTATION OF SPATIAL SOUND AS SOUND SIGNAL AND METADATA ASSOCIATED WITH IT Russian patent published in 2023 - IPC H04S3/00 

FIELD: acoustics.

SUBSTANCE: method for representing spatial audio, wherein the spatial audio is a combination of directional audio and diffuse audio, is provided, the method includes: creating a single-channel or multi-channel downmix audio signal by downmixing input audio signals from a plurality of microphones (m1, m2, m3) in an audio capture unit capturing spatial audio, wherein downmixing to create a single-channel or multi-channel audio signal x downmixing is described as follows: x = D·m, where D is a downmix matrix containing downmix coefficients defining weights for each input audio signal from the plurality of microphones, and m is a matrix representing the input audio signals from the plurality of microphones; determining first metadata parameters associated with the downmix audio signal, wherein the first metadata parameters indicate one or more of: a relative time delay value, a gain value, and a phase value associated with each input audio signal; and combining the generated downmix audio signal and the first metadata parameters into a spatial audio representation.

EFFECT: improvement of presentation of spatial sound.

35 cl, 9 dwg