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Reducing audibility of sensor noise floor in a road noise cancellation system
Reducing audibility of sensor noise floor in a road noise cancellation system
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机译:降低道路噪声消除系统中传感器本底噪声的可听性
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摘要
A road noise cancellation (RNC) system may include a controller and attenuator for reducing the audibility of the noise floor caused by the system's vibration sensors. A level of anti-noise at a location in a passenger cabin that may be attributed to the sensor noise floor may be estimated. An actual sound level in the passenger cabin may be measured or estimated, with the sensor noise floor component algorithmically removed. The difference in levels may be compared to a predetermined threshold to determine an amount of attenuation, if any, to be applied to an anti-noise signal to reduce audibility.
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