Circular Logic, LLC develops technologies and markets software for analyzing audio and other time-based signals, including music and speech. The companies research led to a new way to follow tempo and rhythm. The firm is now developing a new technology that enabling nonlinear signal processing to be effectively and efficiently implemented in digital hardware and software. This approach is intended to simulate the nonlinear processing that takes place in the human auditory system by reproducing the way your ear and brain listen to the world around you.