Active noise cancellation stability solution
AssigneeSiemens VDO Automotive Corporation
InventorsJohn F. Astorino, Ian R. McLean, Trevor Laak
Life of this patent
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Abstract
The method of noise attenuation comprises the steps of generating a noise canceling signal, sensing for an system condition, and ceasing the generation of the noise canceling based upon the system condition. This method is embodied in a system that includes an air induction body, a speaker in proximity to the air induction body, a sensor for sensing a system condition, and a control unit with a noise cancellation feature. The control unit is in communication with both the speaker and the sensor. Based upon the sensed system condition, the control unit may disable the noise cancellation feature.
Claims11
A method of noise attenuation comprising the steps of:
- generating an active noise canceling signal;
- sensing engine noise;
- sensing background sound;
- comparing engine noise to background sound;
- sensing a throttle position;
- and
- ceasing the generation of the an active noise canceling signal based upon the throttle position and the comparing of engine noise to background sound.
A method of noise attenuation comprising the steps of:
- generating an active noise canceling signal;
- sensing engine noise;
- sensing background sound;
- comparing the engine noise to the background sound;
- ceasing the generation of the an active noise canceling signal based upon the comparing of the engine noise to the background sound.
Dependencies are inferred from the claim text.