Real-Time implementation of a blind authentication method using self-synchronous speech watermarking

Abstract

A blind speech watermarking scheme that meets hard real-time deadlines is presented and implemented. In addition, one of the key issues in these block-oriented watermarking techniques is to preserve the synchronization. Namely, to recover the exact position of each block in the mark extract process. In fact, the presented scheme can be split up into two distinguished parts, the synchronization and the information mark methods. The former is embedded into the time domain and it is fast enough to be run meeting real-time requirements. The latter contains the authentication information and it is embedded into the wavelet domain. The synchronization and information mark techniques are both tunable in order to allow a con gurable method. Thus, capacity, transparency and robustness can be con gured depending on the needs. It makes the scheme useful for professional applications, such telephony authentication or even sending information throw radio applications.

Un esquema de marca de agua (blind speech watermarking scheme) que cumpla en tiempo real los plazos que presenta e implementa. Además, uno de los temas clave en estas técnicas en bloques orientados a marcas de agua es preservar la sincronización. A saber, para recuperar la posición exacta de cada bloque en el proceso de extracción de marcas.

Un esquema de marca d'aigua (blind speech watermarking scheme) que compleixi en temps real els terminis que presenta i implementa. A més, un dels temes clau en aquestes tècniques en blocs orientats a marques d'aigua és preservar la sincronització. És a dir, per recuperar la posició exacta de cada bloc en el procés d'extracció de marques.