Consider an input signal that is composed of the superposition of: Ap := 20 mV level pure tone at frequency fp := 60 Hz and phase p corresponding to power line noise. Av := 1 mV level pure tone at frequency fv := 600 Hz and phase v corresponding to a voice signal. Af := 10 mV level pure tone at frequency f f := 60 kHz and phase f corresponding to fluorescent light control electronics noise. We would like to keep the 600 Hz tone, which could correspond to a voice signa