System for artificially altering perceived motor noise of a motor vehicle

Abstract

The present invention relates to a system for artificially modifying the perceived motor noise of a motor vehicle. The system includes a drive controller for controlling the drive of the motor vehicle. The drive controller is designed to send a first signal to the communication bus, the first signal correspondingly describing the actual state of the drive; at least with respect to the first signal, the corresponding first signal is generated identically to the associated first signal a second signal of the signal type and sent to the same or a different communication bus, the at least one second signal contains at least part of the signal information which is not real, in contrast to the associated first signal, the first Signal does not contain it. The system also includes an audio controller configured to receive the second signal and generate the audio signal. The system includes an actuator for generating noise with the goal of mixing the actual motor noise and the noise generated by the actuator into a perceptible motor noise that changes relative to the actual motor noise.

Description

Technical field [0001] The invention relates to a system for artificially changing the perceived motor noise of a motor vehicle. Background technique [0002] It is known to artificially change the sensible motor noise of a motor vehicle by adding noise. Noise is generated by the actuator, which is excited to vibrate with the audio signal. The actuator may be, for example, a loudspeaker, such as a loudspeaker in the interior of the vehicle or a loudspeaker in an outer area of ​​the vehicle for sound production. Such a system can, for example, use audio equipment that already exists, in which audio signals for changing motor noise can be heard through the speakers of the audio equipment, for example, in parallel with possible music signals. Alternatively, in order to generate noise as an actuator, so-called structure-borne acoustic wave transducers are also used, which excite the vehicle structure to vibrate, and these vibrations are then sensed by passengers in the interior of ...

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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