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US 2017/0287463 A1Published application
Automatic noise control
AssigneeHarman Becker Automotive Systems GmbH
InventorMarkus CHRISTOPH
Life of this patent
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Abstract
Active noise control systems and methods are disclosed that include generating with a first sub-system, anti-noise that is configured to reduce or cancel noise occurring at a listening position. Generating with a second sub-system, anti-noise that is configured to reduce or cancel noise occurring at the listening position. The first active noise control sub-system has a higher robustness than the second active noise control sub-system.
Claims20
An active noise control system comprising:
- a first active noise control sub-system and a second active noise control sub-system;
- wherein:
- the first active noise control sub-system has a higher robustness than the second active noise control sub-system.
An active noise control method comprising:
- generating with a first active noise control sub-system, anti-noise that is configured to reduce or cancel noise occurring at a listening position;
- and
- generating with a second active noise control sub-system, anti-noise that is configured to reduce or cancel noise occurring at the listening position;
- wherein:
- the first active noise control sub-system has a higher robustness than the second active noise control sub-system.
2 more elements
An active noise control system comprising:
- a first active noise control sub-system;
- a second active noise control sub-system;
- and
- a stability controller that evaluates a stability of the second active noise control sub-system and switches the second active noise control sub-system off or restricts an operation of the second active noise control sub-system to lower frequencies when an instability condition of the second active noise control sub-system is detected.
1 more element
Dependencies are inferred from the claim text.