A method for removing an extracted radio frequency, RF, signal to examine a spectrum of at least one other RF signal, comprising: receiving a mixture signal by an analog-to-digital converter, ADC,, the mixture signal comprising a plurality of separate source signals (104a-104n) from different signal sources (106a-106n); digitizing the mixture signal by the ADC and generating a first digitized signal and a second digitized signal, wherein the first digitized signal is the same as the second digitized signal; delaying the first digitized signal by a predetermined time delay; processing the second digitized signal in a neuromorphic signal processor to extract an extracted signal from the second digitized signal, wherein processing the second digitized signal in the neuromorphic signal processor comprises: receiving the second digitized signal by the neuromorphic signal processor; generating a delay embedded mixture signal based on the second digitized signal; linearly mapping the delay embedded mixture signal into a reservoir; creating a multi-dimensional state-space representation of the mixture signal by combining the delay embedded mixture signal with a plurality of reservoir states; and identifying at least one of the separate source signals that collectively form the mixture signal based on the multi-dimensional state-space representation of the mixture signal, the at least one identified separate source signal being the extracted signal; wherein the predetermined time delay corresponds to a delay embedding in the neuromorphic signal processor; adjusting a phase delay and amplitude of the extracted signal based on a phase delay and amplitude of the first digitized signal; and cancelling an adjusted extracted signal from the first digitized signal to provide an input examination signal. receiving a mixture signal by an analog-to-digital converter, ADC,, the mixture signal comprising a plurality of separate source signals (104a-104n) from different signal sources (106a-106n); digitizing the mixture signal by the ADC and generating a first digitized signal and a second digitized signal, wherein the first digitized signal is the same as the second digitized signal; delaying the first digitized signal by a predetermined time delay; processing the second digitized signal in a neuromorphic signal processor to extract an extracted signal from the second digitized signal, wherein processing the second digitized signal in the neuromorphic signal processor comprises: receiving the second digitized signal by the neuromorphic signal processor; generating a delay embedded mixture signal based on the second digitized signal; linearly mapping the delay embedded mixture signal into a reservoir; creating a multi-dimensional state-space representation of the mixture signal by combining the delay embedded mixture signal with a plurality of reservoir states; and identifying at least one of the separate source signals that collectively form the mixture signal based on the multi-dimensional state-space representation of the mixture signal, the at least one identified separate source signal being the extracted signal; wherein the predetermined time delay corresponds to a delay embedding in the neuromorphic signal processor; receiving the second digitized signal by the neuromorphic signal processor; generating a delay embedded mixture signal based on the second digitized signal; linearly mapping the delay embedded mixture signal into a reservoir; creating a multi-dimensional state-space representation of the mixture signal by combining the delay embedded mixture signal with a plurality of reservoir states; and identifying at least one of the separate source signals that collectively form the mixture signal based on the multi-dimensional state-space representation of the mixture signal, the at least one identified separate source signal being the extracted signal; wherein the predetermined time delay corresponds to a delay embedding in the neuromorphic signal processor; adjusting a phase delay and amplitude of the extracted signal based on a phase delay and amplitude of the first digitized signal; and cancelling an adjusted extracted signal from the first digitized signal to provide an input examination signal.