DEVICE AND METHOD FOR PROVIDING SPATIALITY MEASURE RELATED TO AUDIO STREAM Russian patent published in 2021 - IPC H04S3/00 H04S7/00 H04R5/04 

FIELD: acoustics.

SUBSTANCE: invention relates to means for providing a spatiality measure related to an audio stream. Audio channels of the audio stream are estimated to provide the spatiality measure related to the audio stream in the following way. A similarity measure is determined between the first set of audio channels of the audio stream to be played in one or more of the first spatial layers and the second set of audio channels of the audio stream to be played in one or more of the second spatial layers. The spatiality measure is determined based on the similarity measure. A masking threshold is determined based on information of the level of the first set of audio channels and the comparison of the masking threshold with information of the level of the second set of audio channels. The spatiality measure is increased, when the comparison indicates that the masking threshold is exceeded by information of the level of the second set of audio channels, and the similarity measure indicates a low similarity between the first set and the second set.

EFFECT: increase in the efficiency of estimating the spatiality measure for audio streams.

20 cl, 5 dwg