A method and system is disclosed for generating one or more predetermined waveforms from one or more contiguous segments of at least one prototype waveform stored in one or more memory tables, the method and system comprising iterations of following sample processing steps: reading at least one sample of the stored prototype waveform at a predetermined address, modifying the sample according to a predetermined logic, and accumulating the modified sample, wherein through a predetermined number of iterations of above steps, a cycle of a new waveform is formed by the accumulated modified samples.