TEMPORARY DEFORMATION LOOP COMPUTER, AUDIO SIGNAL ENCODER, ENCODED AUDIO SIGNAL PRESENTATION, METHODS AND SOFTWARE Russian patent published in 2013 - IPC G01L19/02 G01L21/04 

FIELD: physics.

SUBSTANCE: invention discloses a time scale deformation loop computer for inclusion in the design of an audio signal decoder in order to generate a decoded audio signal presentation based on an encoded audio signal presentation, which performs the function of receiving encoded information on deformation coefficients, extracting therefrom a sequence of deformation coefficient values and calculating deformation loop node values, starting from the initial value of the time scale deformation loop. The ratio of the time scale deformation loop node values to the initial time scale deformation loop value, assigned to a reference time scale deformation loop node, is defined by deformation coefficients. The time scale deformation loop computer calculates the value of the given node point of the deformation loop which is separated from the initial deformation loop node by an intermediate deformation loop node, based on the product of coefficients which are, on hand, the ratio of the value of the initial point of the deformation loop to the value of the intermediate node point of the deformation loop and on the other hand, the ratio of the value of the intermediate node point of the deformation loop to the value of the given deformation loop node.

EFFECT: enabling efficient and accurate reconstruction of a time scale deformation loop owing to that the relative change in the time scale deformation loop between serial coordinates is generally limited by a narrow range of values; the loop can be described with sufficient accuracy by coded information on time scale deformation coefficients.

15 cl, 19 dwg