System for artificial change of perceived engine noise of motor vehicle

Abstract

The invention relates to a system for artificially changing a perceived engine noise of a motor vehicle. The system comprises a drive control device, in particular an engine control device for controlling the drive of the motor vehicle. The drive control device is adapted for: providing first signals on a communication bus to accordingly describe the actual state of the drive; generating second signals correspondingly with the same signal type of the matched first signals at least relative to the first signals, sending the second signals to the same or different communication bus, if the second signals are different with the first signals, at least one second signal comprises at least a part of unreal signal information and the first signal does not comprise the same. The system also comprises an audio controller which is adapted to receive the second signals and generate the audio signal. The system comprises an actuator to make noise, with the purpose that: the actual motor noise and the noise generated by the actuator are mixed to a changed appreciable motor noise relative to the actual motor noise.

Description

technical field [0001] The invention relates to a system for artificially varying the perceived motor noise of a motor vehicle. Background technique [0002] It is known to artificially alter the perceived motor noise of a motor vehicle by adding noise. The noise is generated via an actuator which is excited to vibrate by means of an audio signal. The actuator can be, for example, a loudspeaker, for example a loudspeaker in the interior of the vehicle or a loudspeaker in the exterior area of ​​the vehicle for sound generation. Such a system can, for example, make use of an already existing audio system, wherein an audio signal for changing the motor noise can be heard via a loudspeaker of the audio system, for example, in parallel with a possible musical signal. Alternatively, so-called solid-state acoustic wave transducers are also used as actuators for noise generation, which excite the vehicle structure to vibrate, which are then felt in the vehicle interior by the pass...

AI Technical Summary

Problems solved by technology

[0006] A disadvantage of this audio controller is that it only calculates the audio signal based on the usual signals provided by the motor controller via the vehicle bus, such as rotational speed and torque, which can only insufficiently improve the determined Motor noise during operating states such as motor starting or gear shifting, since the audio controller does not have sufficiently detailed information about these certain operating states and analysis is therefore impossible

The sufficiently detailed information about the operating state that is available in the motor controller itself is not sent by the motor controller via the vehicle bus and is therefore not available to the audio controller itself.

Even if sufficiently detailed information about the current operating state of the driver is available in the audio controller, expensive functionality is required in the audio controller to generate an appropriate audio signal for the corresponding driver operating state based on this information

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