Etude et implémentation d’un schéma de codage de la parole par ondelettes

Abstract

Technological advances in the field of communication have generated communication and multimedia applications. The representation of the speech signal in speech coding aims to reduce the number of bits required while preserving a high perception quality. In this work, we will study and implement a coding system that is based on the wavelet transform. Indeed, two coding algorithms are presented. The first is a classical coding algorithm and the second is the zero-point tree coding (SPIHT). We studied these experiments on several audio signals, after which we compared the two algorithms to arrive at the best speech encoding algorithm.