Text-to-speech means first and foremost more convenience for the Navigator V user. Because the vocal announcement not only says the direction but also the road name. This prevents mix-ups when turning and simplifies the navigation. Previous vocal announcements had always been spoken by a real voice and pre-recorded. The vocal announcements were then put together if required from the corresponding sections of an announcement and played back. If you had wanted to use pre-recorded road names, it would have been necessary to digitise all road names in the map material, which would have been impossible given the volume. Text-to-speech on the other hand actually reads out text by effectively emulating the human voice. It therefore does not work with pre-recordings, but knows how to stress each letter, syllable and their combinations. The result is an announcement which makes navigation significantly easier for you.