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US 11,282,493 B2Granted
Adaptive noise filtering system
AssigneeWestinghouse Air Brake Technologies Corporation
InventorBrian E. Kurz
Life of this patent
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Abstract
An adaptive noise filtering system and method detect sounds using a sensor onboard a vehicle system. A value of a signal associated with operation of the vehicle system is determined. One or more sounds detected by the sensor are filtered out based on the value of the signal that is determined. Operation of the vehicle system may be controlled using the remaining sound(s).
Claims18
A method comprising:
- detecting sounds using a sensor onboard a vehicle system;
- determining a value of a signal associated with operation of the vehicle system;
- filtering out one or more first sounds of the sounds detected by the sensor based on the value of the signal that is determined responsive to the value of the signal exceeding a threshold, wherein one or more second sounds of the sounds remain after the one or more first sounds are filtered;
- recording the one or more second sounds responsive to the value of the signal exceeding the threshold;
- and
- recording the one or more first sounds and the one or more second sounds responsive to the value of the signal not exceeding the threshold.
3 more elements
A noise filtering system comprising:
- a controller configured to determine a value of a signal associated with operation of a vehicle system, the controller also configured to filter out one or more first sounds of sounds detected by a sensor onboard the vehicle system based on the value of the signal that is determined, the controller configured to filter out the one or more first sounds responsive to the value of the signal exceeding a threshold, wherein one or more second sounds of the sounds remain after the one or more first sounds are filtered,
- the controller also configured to control operation of the vehicle system based on one or more second sounds of the sounds that remain after the one or more first sounds are filtered out from the sounds detected by the sensor, the controller configured to record the one or more second sounds responsive to the value of the signal exceeding the threshold and to record the one or more first sounds and the one or more second sounds responsive to the value of the signal not exceeding the threshold.
A method comprising:
- converting a first sound received by a first transducer into a first analog electrical signal;
- converting a second ambient sound received by the first transducer or a second transducer into a second analog electrical signal;
- comparing a value of a signal associated with operation, movement, or both operation and movement of a vehicle system to a reference value;
- storing a digitized, unfiltered version of the first analog electrical signal responsive to the value of the signal being no greater than the reference value;
- and
- storing a digitized, filtered version of the second analog electrical signal responsive to the value of the signal being greater than the reference value.
3 more elements
Dependencies are inferred from the claim text.