An allpass-based diffuse reverberator with explicit control of reverberatio
n time vs frequency is derived from a simple physical model. The resulting
equations are closely related to the well-known equations given by Sabine a
nd Eyring for real rooms. In addition only a single complex filter is requi
red for the implementation of arbitrary frequency characteristics, making t
his type of reverberator an efficient component in real-time applications s
uch as auditory virtual environments. (C) 2000 Elsevier Science Ltd. All ri
ghts reserved.