Correction of (sin x)/x distortion introduced by discrete-time/continuous-time signal conversion

A new analytical method is proposed for the correction of the (sin x)/x distortion which is characteristic of the spectra of discrete-time signals converted to continuous-time waveforms. The method is based on the adjustment of the quality factors associated with the poles of the reconstruction filter transform function. Simulation results show that, in spite of its simplicity, the new technique yields significant improvements in the frequency spectrum of the continuous-time signal after the conversion