Digital/analogue signal conversion method uses transformation with orthogonal functions and determination of coefficients for re-conversion into analogue range

摘要

The signal conversion method has a bandwidth limited digital input signal divided into intervals of given time duration, for transformation of the signal within each interval via orthogonal functions, with determined coefficients for the signal and the orthogonal functions converted into analogue coefficients, used for re-transformation of the signal into the analogue range via orthogonal functions. An Independent claim for a digital/analogue signal conversion device is also included.