A new method is presented for examining the spatial attributes of a sound recorded within a room. A binaural recording is converted into a running representation of instantaneous lateral angle. This conversion is performed in a way that is influenced strongly by the workings of the human auditory system. Auditory onset detection takes place alongside the lateral angle conversion. These routines are combined to form a powerful analytical tool for examining the spatial features of the binaural recording. Exemplary signals are processed and discussed in this paper. Further work will be required to validate the system, and to compare it against existing auditory analysis techniques.