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 cannot reproduce actual room reflection characteristics in an exact sense.

Transfer-Function Models

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

Perceptual Aspects of Reverberation

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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