Vocal signal digital processing. Instrument for analog to digital   conversion study
  The goal of this article is to present interactive didactic software for analog to digital conversion using PCM method. After a short introduction regarding vocal signal processing we present some method for analog to digital conversion. The didactic software is an applet that can be direct accessed by any interested person. 
Ovidiu-Andrei Schipor, Felicia-Florentina Giza
cs.SD