Figure 2.

Architecture of one ear of the spike-based binaural AEREAR2 system. The binaural cochlea has 64 channels per ear. Each channel has a model of the basilar membrane (second-order section), a model of the inner hair cell (modeled by half-wave rectifier), and four spiral ganglion cells (modeled by integrate-and-fire neurons) driven by four separate thresholds, VT1–VT4. The incoming output of the microphone goes to a preamplifier before the audio is processed by the different channels of the cochlea, starting with the filters with the highest best characteristic frequency (BCF). Adapted from Liu et al. (2014).