Digital Reverberation

There are a variety of approaches to synthesizing the effect of a reverberant space. Approaches based on direct measurement of a particular room response (convolution techniques) tend to be less extensible and computationally expensive, though possible using special purpose hardware. The use of three-dimensional physical modeling techniques is also limited by computational requirements. Most current work in simulating reverberation is based on ``physically- and perceptually-informed'' techniques that seek to create parametrically-controllable systems. These models can produce very good reverberant responses though they generally cannot be made to correlate with actual room measurements.

Two excellent overviews of artificial reverbation developments are given by

And a historically important paper is

Convolution Model Example

Figure 8: A listener-source setup in a room.
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A Physical Modeling Approach

Parametric, Physically- and Perceptually-Informed Approaches

Early Reflections

Late Reverberation

Feedback Delay Networks (FDN)

Figure 14: A feedback delay network structure proposed for artificial reverberation by Jot (1992).
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