Voice synthesis function
Performance
Voice synthesis functions are integrated into the complete system. The navigation computer issues guidance information in voice form. The user can then be guided without taking their eyes off the road.
Functional description
| STEP | ACTION PERFORMED |
| 1 | The navigation computer must send an instruction to the user. The navigation computer sends a request for permission to output an audio signal to the multifunction display via the VAN COMFORT network. |
| 2 | The multifunction display controls the activation of the radio's voice synthesis audio input via the VAN COMFORT network. |
| 3 | The radio activates the voice synthesis audio input. The radio informs the multifunction display that its audio input has been activated via the VAN COMFORT network. |
| 4 | The multifunction display authorises the navigation computer to output an audio signal. |
| 5 | The navigation computer reads the voice information from the mapping CD-ROM. The navigation computer outputs the voice information via a wired line-level connection. |
| 6 | The radio receives the voice information in real time via a wired line-level connection. The radio applies the audio correction set by the user and amplifies the corrected signal. The radio sends the corrected and amplified voice information to the loudspeakers. |
| 7 | The user receives the guidance information in the form of sentences. |
Note: Press the "A" button on the steering wheel switch module to have the last instruction repeated as a voice message.
Test yourself
A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.