Omelchenko S. Methods and tools of quality assurance of transmission of speech in digital telephony

An object is the processes of transmission and treatment of vocal signals in digital telephony. A purpose is development of algorithms of automatic control of quality of transmission of speech on the basis of antijamming algorithms of speech recognition in digital telephony. The methods of theory of pattern recognition, methods of theory of automatic speech recognition, methods of mathematical statistics, digital treatment of signals, are research methods, method of statistical tests on computer of algorithms of speech recognition. The methods of antijamming recognition of words of speech are developed: on formantnim by signs with dvuetapnim by their evaluation and correction depending on a noise level, and application of the poligaussovskih distributing and mixtures Koshi; on the basis of estimations of momentnih functions: on the basis of evaluation of dispersion of results of whitening by the filters of avtoregressii of sliding-middle. The methods of recognition of words of speech acquired subsequent development: in space of estimations of coefficients of reflection, estimations of logarithms of areas of crossing of vocal highway; on formantnim by signs; on the basis of evaluation of dispersion of results of whitening by the latticed filters. Field - telecommunications