Audio Master Function

One of the main functions of the M-ASK is the audio master. The task of the audio master is to collect, process and output all audio signals in the vehicle.

A further task of the audio master is to generate and make available the audio signals (with exception of the direction indicator noise) required by the various systems in the vehicle. The special acoustic signals are required for warnings or as information for the driver such as the PDC signal, jingles (gong).

In addition to the generated audio signals, the following audio signals are processed and output or made available on the MOST bus:

• Radio
• CD changer
• Telephone
• Navigation message
• AUX-In
• SDARS (US only)

The M-ASK controls all sound and acoustic setting requirements of the customer. The level of a signal is not changed abruptly but rather smoothly, e.g. by mixing, fading in and fading out or intermittent attenuation of the signal in the sink for the purpose of achieving high quality overall acoustics.

The M-ASK ensures clear cut acoustic changeover between the sources when a control unit is requested to output an information or warning signal. The acoustic signals or audio sources requested in the M-ASK are output in accordance with a defined priority structure.