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Artificial Reverberation and Spatialization
Julius Smith
and
Nelson Lee
RealSimple Project
1
Detailed Contents (and Navigation)
Reverberation Transfer Function
Implementation
Complexity of Exact Reverberation
Possibility of a Physical Reverb Model
Perceptual Aspects of Reverberation
Perception of Echo Density and Mode Density
Proof that Echo Density Grows as Time Squared
Proof that Mode Density Grows as Freq. Squared
Early Reflections and Late Reverb
Perceptual Metrics for Ideal Reverberation
Energy Decay Curve (EDC)
Energy Decay Relief (EDR)
Energy Decay Relief (EDR) of a Violin Body Impulse Response
Reverb = Early Reflections + Late Reverb
Early Reflections
Late Reverberation
Schroeder Allpass Sections
Why Allpass?
Are Allpasses Really Colorless?
A Schroeder Reverberator called JCRev
FDN Late Reverberation
Jot's FDN Late Reverberators (1991)
Choice of Feedback Matrix
Householder Feedback Matrix
Householder Reflection
Householder FDN = Coupled Feedback Combs
Householder Properties for Specific Sizes
Choice of Delay Lengths
Achieving Desired Reverberation Times
Delay-Filter Design
First-Order Delay-Filter Design
Tonal Correction Filter
Further Extensions for FDN Reverberation
Further Extensions for FDN Reverberation
FDNs as Digital Waveguide Networks
Rectilinear Digital Waveguide Mesh
Waveguide Mesh Features
Reverb Resources on the Web
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Reverb_4up.pdf
``
Artificial Reverberation and Spatialization
'', by Julius O. Smith III and Nelson Lee,
REALSIMPLE
Project — work supported by the
Wallenberg Global Learning Network
.
Released
2007-09-19
under the
Creative Commons License (Attribution 2.5)
, by Julius O. Smith III and Nelson Lee
Center for Computer Research in Music and Acoustics (CCRMA),
Stanford University