Abstract: A method determines and optionally eliminates a disturbing noise subjectively perceived by an operator, particularly a disturbing noise of a vehicle. The vehicle is operated by the operator complaining of the disturbing noise. Noise effects are recorded during the operation of the vehicle, particularly in the region of the operator's ear. From all sound effects, a noise sequence is taken which contains the disturbing noise. The noise sequence is played to the operator. If the noise sequence is at least similar to the disturbing noise, the noise sequence is converted to a sequential frequency spectrum using a mathematical algorithm. In the present sequential frequency spectrum, at least one frequency or group of frequencies is manipulated; from the manipulated frequency spectrum. A manipulation noise is generated and is played to the operator for evaluation the change of the disturbing noise. If the disturbing noise is reduced or removed in the manipulation noise, a corresponding repair is carried out.
Abstract: A method and device are provided for influencing an impression which is subjectively perceived by an occupant of a vehicle, in particular of a passenger car, when the vehicle is being operated. The primary oscillations which are produced when the vehicle is being operated are determined. Data for secondary oscillations are acquired from the primary oscillations and are converted at least in part into vibration oscillations which can be perceived through the human body. At least one of the components of the vehicle body is excited using the vibration oscillations, the vibration oscillations being placed in an interference relationship with the primary oscillations. In particular, the steering wheel is also excited so as to undergo mechanical vibration oscillations.
November 10, 1998
Date of Patent:
November 21, 2000
DaimlerChrysler AG, Head acoustics GmbH