| 摘要 |
An active acoustic resonator is provided for noise reduction, with a sound generator having a membrane, with a sensor for measuring the membrane motion, with an actuator for driving the membrane, as well as with a controller receiving the measured signal of the sensor and generating control signals for the actuator. A transfer function (FR) of the controller is proportional to a quotient, whose numerator (FBP) has the transfer behavior of a band pass filter with variable center frequency (f0), and whose denominator represents the transfer function (FU) of the actuator.
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