GF82.85-P-3001RM Voice Output, Function

GF82.85-P-3001RM Voice Output, Function
- with CODE (527) COMAND APS with single DVD drive (with navigation)


The navigation system destination-oriented navigation (based on DVD data) is supported significantly by voice output:
^ Directional instructions
^ Name of the road to turn into

The voice data are originally stored on the navigation digital versatile disk (DVD) as individual word segments. This data record is automatically transferred from the DVD to the navigation processor (N41/1) and stored there.
The COMAND operating, display and controller unit (A40/3) offers various languages:
^ English
^ British English
^ French
^ Spanish
^ Italian
^ Dutch

Several driving recommendations in quick succession are combined into a single voice output.

The data for the voice output is transferred from the DVD to the navigation processor (N41/1) and stored there. The navigation processor (N41/1) combines these word segments into complete instructions or information and generates appropriate low-frequency (LF) signals. The LF signals generated in this way are forwarded to the audio gateway control unit (N93/1), if required, where they are amplified and then output via the vehicle speakers. These can be selected using the "System settings" menu.

If the vehicle is equipped with code (810) Sound system, the speech signals are transferred digitally from the navigation processor (N41/1) via the Media Oriented System Transport (MOST) to the sound amplifier (A2/13). There they are amplified and then output via the vehicle speakers.

Loading a language takes a few seconds and changes both the voice output and the menu texts at the display of the COMAND operating, display and controller unit (A40/3). Voice loading takes place again automatically after a power disconnection.

While a language is being loaded from the DVD, severe vibrations (e.g. bad road conditions) should be avoided. Otherwise voice output may be given in fragments. In such an instance the language should be loaded again.

Superimposition of voice output and an audio source.
When voice output and an audio source (e.g. CD) are active simultaneously, the two signal sources are superimposed.

Volume of voice output
The voice output volume can be adjusted during voice output. A definable difference (can be modified in "Settings" menu) is maintained between the volume of the current audio source and the voice output volume.

Example for the voice output
The volume is turned down during voice output. If the given volume difference from the audio signal is not achieved, the COMAND operating, display and controller unit (A40/3) then lowers the level of the audio signal until the specified volume difference is reached again. After the voice output the audio signal volume is raised again to the value of the voice output. The volume of the voice output cannot be regulated to less than a specific minimum level.

Voice output mute circuit
The navigation voice output can be muted during voice output by pressing the mute button (button marked with struck-out speaker). Muting is only valid for the current voice output. When navigation voice output and another audio source (e.g. CD) are active simultaneously, the navigation voice output is muted by pressing the "Mute" button for the 1st time and the complete playback is muted when the mute button is pressed for the 2nd time.