Active vibration/noise control apparatus

摘要

A control signal filter 2 receives a sound source signal determined by a control frequency specified in accordance with the vibration/noise source that produces vibration/noise, and outputs a control signal. A filter coefficient update unit 4 updates coefficients of the control signal filter 2 in response to a sound source signal and an error signal. A disturbance detector 6 outputs a disturbance detection result in response to the error signal and an estimated secondary vibration/noise signal. An update controller 7 adjusts an update step of the filter coefficient update unit 4 in accordance with the disturbance detection result.

主权项

1. An active vibration/noise control apparatus comprising:
a control signal filter that receives a sound source signal determined by control frequency specified in accordance with a vibration/noise source which produces vibration/noise, and that outputs a control signal; a filter coefficient updater that updates coefficients of the control signal filter in response to an error signal and the sound source signal, the error signal resulting from interference of the vibration/noise with secondary vibration/noise generated from the control signal; a secondary vibration/noise estimator that outputs an estimated secondary vibration/noise signal in response to the control signal; a disturbance detector that outputs a disturbance detection result in response to the error signal and the estimated secondary vibration/noise signal; and an update controller that adjusts an update step of the filter coefficient updater in response to the disturbance detection result.