Design of an HNM System for Prosodic Modification of Slovak Speech

In this article, a design of an HNM (harmonic plus noise) model used for prosodic modification of Slovak speech is described. HNM model represents speech signals as a sum of a harmonic and a noise part. The decomposition of speech signal into these two parts enables more natural sounding modifications of the signal. The parametric representation of speech provides a straightforward way of changing prosodic features of the speech. Our algorithm is based on the modified HNM model. Moreover, the system detects the exact phase of the sinusoids to ensure better quality of the speech signal