1. A method of processing a plurality of asynchronous event driven samples of a continuous analog time signal in a computational network, comprising: receiving the continuous analog time signal at a vision sensor; generating the plurality of asynchronous event driven samples based on event-driven sampling of the continuous analog time signal; calculating a short-time Fourier transform (STFT) digital signal directly from the plurality of asynchronous event driven samples of the continuous analog time signal; and processing the STFT digital signal.