An essential feature of intelligent sensory processing is the ability
to focus on the part of the signal of interest against a background of
distracting signals, and to be able to direct this focus at will. In
this paper the problem of auditory streaming is considered and a model
of the early stages of the process is proposed. The behavior of the m
odel is shown to be in agreement with a number of well-known psychophy
sical results, including the relationship between presentation rate, f
requency separation and streaming, the temporal development of streami
ng, and the effect of background organization on streaming. The princi
pal contribution of this model is that it demonstrates how streaming m
ight result from interactions between the tonotopic patterns of activi
ty of incoming signals and traces of previous activity which feed back
and influence the way in which subsequent signals are processed. The
significance of these results for auditory scene analysis is considere
d and a framework for the integration of simultaneous and sequential g
rouping cues in the perception of auditory objects is proposed. (C) 19
97 Acoustical Society of America.