METHOD OF RECOGNIZING LOW-SPEED SPEECH CODING PROTOCOLS Russian patent published in 2018 - IPC G10L19/08 H03M13/03 

FIELD: data processing.

SUBSTANCE: invention is intended for recognition of low-speed speech coding (LSSC) protocols. Technical result is achieved by increasing the dimension of measured redundancy coefficient vector ϕ_Z up to ϕ_L, L = Z + 2 and taking into account the shift effect of the vector elements ϕ_L by forming square reference matrix Φ_Ljet for all J known LSSC protocols, j = 1, 2 …, J. To this end, a digital stream Y is received for a predetermined time interval ΔT. Rectangular information matrix Y_K×L is formed, the rows of which are information blocks placed successively under each other. Redundancy coefficient vector ϕ_L is calculated, measured vector ϕ_L is elementwise compared with strings ϕ_Ljet(l) of all J square reference matrices Φ_Ljet, deviation ΔP_j(l) between measured vector ϕ_L and the rows of all J reference matrices Φ_Ljet, is determined, it is decided in favor of the j^th LSSC protocol, for which minimum deviation ΔP_j(l)_min of measured vector ϕ_L from the l-th row of j-th square reference matrix Φ_Ljet is provided.

EFFECT: technical result is to increase the accuracy of the recognition of the LSSC protocols.

1 cl, 6 dwg