Metelap V. Correlation-temporal methods and means of forming and processing sound signals in modems of computer systems

The thesis is devoted to research and development of new methods of generating and processing sound signals, which are used as a carrier of signal information in computer systems. The method of clarifying theoretical assessment of broadband noise immunity of the noise signal is suggested and revised assessment is received.The method of increasing the noise immunity of data signals noise by simplifying transmitter circuits by reducing the internal noise of the system channels with constant and variable parameters is developed and researched. The method for increasing the level of data protection in the system due to the phase modulation noise signal is developed.Immunity indicators of developed methods are received. The mathematical and simulation models of data transmission systems using the described methods are developed.