METHOD OF DETECTING LOW-RATE ENCODING PROTOCOLS Russian patent published in 2017 - IPC G10L19/08 H03M13/03 

FIELD: physics, acoustics.

SUBSTANCE: invention is intended for detecting low-rate speech encoding (LRSE) protocols . The technical result is achieved by increasing the number of dimensions of a measured vector of redundancy factors _Z to _L, L=Z+2 and accounting for the shifting effect of vector elements _L by forming a quadratic reference matrix _{Lj et} for all J known LRSE protocols, j=1, 2 , J. To this end, a digital stream Y is received during a given time interval T. A rectangular information matrix Y_KL is formed, rows of which are information units arranged in series one below the other. The vector of redundancy factors _L is calculated, followed by element by element comparison of the measured vector _L with rows _{Lj et}(l) of all J quadratic reference matrices _{Lj et}, determining deviation P_j(l) between the measured vector _L and rows of all J reference matrices _{Lj et}, making a decision in favour of the j-th LRSE protocol, for which is ensured minimum deviation P_j(l)_min of the measured vector _L from the l-th row of the j-th quadratic reference matrix _{Lj et}.

EFFECT: method of improving accuracy of detecting LRSE protocols.

3 cl, 9 dwg