Active Noise Compensation, Basic Function - GF82.62-D-9902A

Model All (Light transporter) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 
• Compensation for lack of engine noises (e.g. on electric vehicles) 

General 

In electric vehicles, the active noise compensation ensures engine noise in the vehicle interior. This provides the driver with acoustic feedback about the respective driving situation.

Function requirements 

• Terminal 30t, for driving noise reduction and compensation for lack of engine noise on electric vehicles

Function 

Compensation for lack of engine noises (e.g. on electric vehicles) 

If the level of noise development is too low (e.g. on electric motors), the simulation of engine noise linked to the driving situation can improve the driving experience.

This also includes acoustic feedback when the engine is switched on and off. The engine sound is tuned to the selected transmission mode. The speaker system outputs the simulated sound even when no audio source is active. If audio output is active, the simulated sound expands the current audio source.

The sound generator control unit performs the following actions to implement the function:

• Receiving and evaluating engine data via the CAN interface.
• Generating and forwarding the simulated signals over audio bus.

As well as acoustic noise compensation, haptic feedback is also provided on some vehicles through the generation of vibrations at the steering wheel.

	Function schematics
	Function schematic for actuating speakers	Model 907, 910 with code XJ4 (Modification year G4-I)	PE82.62-D-2501-97A
	Further basic functions
	Sound generator control unit basic function	Model, all electric vehicles (light vans)	GF82.27-D-9890A