GF82.85-P-3001QN Voice Output, Function
GF82.85-P-3001QN Voice Output, Function
- with CODE (525) MB Audio 50 APS radio
The navigation system is supplemented by the following voice outputs.
^ Direction information
^ Name of the road to turn into
The compass direction is specified for roads without names. The compass direction is omitted in the case of streets (e.g. in towns), which are designated by a name. The voice data is original stored on the navigation CD as individual word segments. This data record is transferred automatically from the navigation CD to the navigation processor where it is stored.
The navigation processor links these word segments together into complete instructions or information. Signals are also generated, which are passed via the Media Oriented System Transport (MOST) system to the audio gateway, where they are amplified and then played through the vehicle speakers.
The audio gateway is fully integrated in the radio and navigation unit (A2/56).
Several driving recommendations in quick succession are combined into a single voice output.
In the operating unit of the radio and navigation unit (A2/56), the data for the voice output is transferred from the CD to the navigation processor where they are stored in memory. Severe vibrations (e.g. when driving on bad roads) must be avoided while a language is being loaded from the CD.Otherwise the voice output might be broken up. If this happens the language must be reloaded.
Control of the voice output
If a major emergency message is transmitted, the voice output consists only of this message as this has absolute priority and must not be interrupted by any other message. If the user alters the volume during a navigation system voice output, this volume level is regarded as the default volume level for the next navigation system voice output.
The volume can be adjusted in the following ways:
^ Set a value between audio source and voice output.
^ Set a value between voice output and audio source.
^ If the volume of the audio source is lower than the voice output that is to be heard, the volume of the audio source is not changed.
^ If the volume of the audio source is the same or louder, it is set to a value below the volume level of the voice output to be heard at that moment during the voice output. As soon as the voice output has ended, the volume of the audio source is restored to the original setting prior to the voice output.
^ The volume of the audio source and voice output can be the same. The system voice output can also be completely faded out.
The voice output volume has a minimum and maximum level. The volume cannot be changed to below the minimum value or above the maximum value during the voice output. When the voice output has ended, these values are saved for the next voice outputs until they are changed manually.
Voice output muting
The navigation voice output can be muted by pressing the "MUTE" button for t ≤2 seconds during a voice output. A window with the message "Driving instructions muted" appears on the display. The muting applies only for the current voice output.
The voice output is activated:
^ By pressing the "MUTE" button again
^ By pressing the "NAV Repeat" button
^ By switching the radio and navigation unit (A2/56) off and on
^ By switching the navigation off and on
^ Automatically at the end of the current navigation
If a traffic announcement is heard simultaneously with a voice output, the traffic announcement is muted when the "MUTE" button is pressed for the first time. The voice output is muted when the button is pressed a second time.
