Patent ID: 6772117
Filing Date: 2004-08-03
Classification: G10L

Abstract:
A method for recognising speech, wherein a recognisable speech signal is divided in time into successive frames of specific length, each speech frame is analysed for producing at least one parameter per frame, illustrating the speech signal, said parameters, relating to each frame, are stored in a sliding buffer for minimizing the delay due to the normalization process for calculation of normalisation coefficients for each frame, said parameters are modified utilising said normalisation coefficients and speech recognition is carried out utilising the modified parameters, wherein only part of the successive parameters are stored periodically and at least one parameter is modified on the basis of the parameters stored periodically in order to produce said modified parameter, and for said modification, a standard deviation of said periodically stored parameters is defined, wherein only part of the stored parameters are used at the beginning of the speech recognition.