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JCRev was developed by John Chowning and others at CCRMA
based on the ideas of Schroeder.
- Three Schroeder allpass sections:
- Four feedforward comb-filters:
- Schroeder suggests a progression of delays close to
- Comb filters impart distinctive coloration:
- Early reflections
- Room size
- Could be one tapped delay line
- Usage: Instrument adds scaled output to RevIn
- Reverberator output RevOut goes to four delay lines
- Four channels decorrelated
- Imaging of reverberation between speakers avoided
- For stereo listening, Schroeder suggests a
mixing matrix at the reverberator output, replacing the
decorrelating delay lines
- A mixing matrix should produce maximally rich yet uncorrelated output signals
- JCRev is in the Synthesis Tool Kit (STK)
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Download Reverb.pdf
Download Reverb_2up.pdf
Download Reverb_4up.pdf