SYSTEM AND METHOD OF SPEECH RECOGNITION Russian patent published in 2012 - IPC G10L15/00 

FIELD: information technologies.

SUBSTANCE: system and method are used for speech recognition, which receive a speech signal at the inlet of a reception unit; process the speech signal with an information processing unit, including its processing with an analogue-to-digital converter with preset digitisation frequency and separation into segments, spectral analysis of speech signal segments and normalisation of spectrum at high frequencies; identify pauses, noise and speech signals in the normalised spectrum. Then on the basis of the initial speech signal and the normalised spectrum availability/absence of acoustic criteria of the speech signal is identified in each segment, combinatory sets of which are compared with preset parameters of phoneme groups in the memory unit, and based on comparison results a sequence of symbols is generated to indicate groups of phonemes corresponding to combinatory sets of acoustic criteria of each segment, conversion of which into a cohesive text is carried out with serial decoding of a combinatory combination of symbols of sequence phoneme groups on the basis of a dictionary marked by symbols of phoneme groups.

EFFECT: reduced duration and high accuracy of speech recognition.

19 cl, 5 dwg, 3 tbl