Audio Master

As audio master, the ASK has the task to collect and process all the audio signals of the vehicle and to distribute them to their destinations.

The ASK controls all the acoustic requests from the Control Display. The changes in the level of a signal is not sudden, but smooth, e.g. during suppression, insertion and fading out or temporary suppression of the signal at the destination: Because of this, a high quality acoustic sound is obtained.

The ASK also assumes the generation and preparation of different acoustic signals, e.g. PDC signals and warnings. In the event of a request for a warning or caution signal from a control unit, the ASK provides a clean acoustic change of the signals.

• Audio data - All audio data from any control unit are converted by the ASK into digital audio AF format at a sampling rate of 44.1 MHz.
• Categorization of audio sources - All possible audio sources are divided into different groups according to priority. Warning signals have priority over any other audio source. Mixing of lower priority audio signals (e.g. navigation, radio) is possible.
• Generation of acoustic gongs - These are acoustic alarm signals which help the driver perceive sounds according to a system. The different sounds, requested by the different control units, (e.g. gongs, PDC, etc.), must be generated only in association with a visual indication. These come from the instrument cluster and the Control Display.

The following sounds can be generated in the ASK.

• Beeping for the PDC.
• Various Check Control and warning gongs.
  NOTE: A maximum of three sounds can be produced at once. Sounds are produced in order of importance. Any sound requests of greater than three will be lost.