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US 2020/0111472 A1Published application
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).
Claims20
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;
- and
- filtering out one or more first sounds of the sounds detected by the sensor based on the value of the signal that is determined.
1 more element
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 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.
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 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 and 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.