Self pursuit type filter

摘要

(57) Abstract Self pursuit type band pass filter 1, signal input in order to receive the signal which filtering is done and center frequency f₀ bandpass output in order to offer the bandpass signal S _{BP which} possesses 11 and control signal S _{C the} control possible filter is connected by the control input 15 of 10 which possesses the control input 15 in order to receive 13 and control possible filter, 10 in order for center frequency f of bandpass quality H of control possible filter 10 _B0 to be equal to the frequency f of input signal substantially, conforms in order to generate control signal S _CControl unit 20 and, it has.