A neuromorphic signal processing device for locating a sound source using a plurality of neuron circuits, the device comprising: an input unit configured to receive a first signal and a second signal, to generate a plurality of input spiking signals corresponding to a plurality of frequency bands based on the first signal, and to generate another plurality of input spiking signals corresponding to the plurality of frequency bands based on the second signal; a detector configured to output a detected spiking signal using a detection neuron circuit corresponding to a predetermined time difference, in response to the plurality of input spiking signals of the first signal and the plurality of input spiking signals of the second signal containing identical input spiking signals with respect to the predetermined time difference, for each of the plurality of predetermined frequency bands; a multiplexor configured to output a multiplexed spiking signal corresponding to the predetermined time difference based on a plurality of the detected spiking signals output from a plurality of neuron circuits corresponding to the plurality of frequency bands; and an integrator configured to output an integrated spiking signal corresponding to the predetermined time difference, based on a plurality of the multiplexed spiking signals corresponding to a plurality of predetermined time differences, wherein the multiplexed spiking signal corresponding to the predetermined time difference is received through an excitatory synapse, and the multiplexed spiking signals corresponding to time differences other than the predetermined time difference are received through an inhibitory synapse in order to output the integrated spiking signal corresponding to the predetermined time difference; wherein the integrator is connected, through the inhibitory synapse, more strongly to a multiplexed spiking signal corresponding to a time difference which is relatively distant from the predetermined time difference as compared to a multiplexed spiking signal corresponding to a time difference which is relatively close to the predetermined time difference, among the time differences other than the predetermined time difference; wherein the predetermined time difference corresponds to one of the plurality of predetermined time differences. an input unit configured to receive a first signal and a second signal, to generate a plurality of input spiking signals corresponding to a plurality of frequency bands based on the first signal, and to generate another plurality of input spiking signals corresponding to the plurality of frequency bands based on the second signal; a detector configured to output a detected spiking signal using a detection neuron circuit corresponding to a predetermined time difference, in response to the plurality of input spiking signals of the first signal and the plurality of input spiking signals of the second signal containing identical input spiking signals with respect to the predetermined time difference, for each of the plurality of predetermined frequency bands; a multiplexor configured to output a multiplexed spiking signal corresponding to the predetermined time difference based on a plurality of the detected spiking signals output from a plurality of neuron circuits corresponding to the plurality of frequency bands; and an integrator configured to output an integrated spiking signal corresponding to the predetermined time difference, based on a plurality of the multiplexed spiking signals corresponding to a plurality of predetermined time differences, wherein the multiplexed spiking signal corresponding to the predetermined time difference is received through an excitatory synapse, and the multiplexed spiking signals corresponding to time differences other than the predetermined time difference are received through an inhibitory synapse in order to output the integrated spiking signal corresponding to the predetermined time difference; wherein the integrator is connected, through the inhibitory synapse, more strongly to a multiplexed spiking signal corresponding to a time difference which is relatively distant from the predetermined time difference as compared to a multiplexed spiking signal corresponding to a time difference which is relatively close to the predetermined time difference, among the time differences other than the predetermined time difference; wherein the predetermined time difference corresponds to one of the plurality of predetermined time differences.