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dynamic attenuation filter, Antenna Group OE-376 raw signal Preamp Notched Filter AM-7287, examine power spectrum at known freqs if signals appear to be present for each freq, estimate signal strength, dynamic attenuation filters recover temporal noise Inverse Fast Fourier Transform (IFFT), Noise Suppression Processor digitize standard preprocessed signal ADC analog to digital conv, dynamic attenuation filters data spectrum from FFT dynamic attenuation filters input, Inverse Fast Fourier Transform (IFFT) subtract oldest processed sub-block of temporal noise from unprocessed data sub-block Digital Subtraction Unit, Digital Subtraction Unit convert to analog signal DAC digital to analog conv, configuration of dynamic attenuation filter now apply this filter to modify the computed complex spectrum, examine power spectrum at known freqs if signal appears not present do nothing, modify the computed complex spectrum which minimizes the signal's effect upon the noise estimation proceed to recover temporal noise