Noise mitigation for road noise cancellation systems

摘要

A road noise cancellation (RNC) system may include a noise controller for detecting non-stationary events, such as objects striking vibration sensors, based on sensor signals having a spectral character significantly different from steady-state road noise. Upon detection of an object strike, the RNC system may be deactivated or certain speakers may be muted. Alternatively, the RNC system may modify the sensor signals to mask the non-stationary event, thereby preventing the RNC system from generating anti-noise based on the object strike.