APPARATUS, METHOD AND COMPUTER-READABLE MEDIUM FOR OBTAINING PARAMETER DESCRIBING VARIATION OF SIGNAL CHARACTERISTIC Russian patent published in 2015 - IPC G10L21/264 G10L25/06 G10L21/04 G10L19/04 

FIELD: physics, acoustics.

SUBSTANCE: group of inventions relates to means of analysing time variations of audio signals. Disclosed is an apparatus for obtaining a parameter describing variation of a signal characteristic of a signal based on actual transform-domain parameters describing an audio signal in transform-domain which includes a parameter determiner. The parameter determiner is configured to determine one or more model parameters of a transform-domain variation model describing evolution of the transform-domain parameters depending on one or more model parameters representing a signal characteristic, such that a model error, representing deviation between a modelled temporal evolution of the transform-domain parameters and evolution of the actual transform-domain parameters, is brought below a predetermined threshold value or minimised.

EFFECT: designing highly reliable means for obtaining a parameter describing time variation of a signal characteristic.

27 cl, 9 dwg