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Time-variant Orthogonal Matrix Feedback Delay Network Reverberator

We developed an artificial reverberation device based on a novel, time-variant orthogonal matrix feedback delay network topology. Our novel topology uses multiple, time-variant output taps for each delay line, and therefore simultaneously reduces the amount of delay memory required without introducing coloration, and increases the echo density. Furthermore, the system is guaranteed stable provided that certain constraints on the delay line lengths and tap weights are fulfilled. Our implementation on a 24-bit digital signal processor requires only 16384 words of delay line memory for a four channel input / four channel output reverb.

Author: Paranjpe, Shreyas
Affiliation: Parthus Technologies, San Jose, CA
AES Convention:110 (May 2001) Paper Number:5381 Import into BibTeX
Subject:Signal Processing for Audio

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E-Library Location: (CD aes18)   /pp2001/pp0105/110119.pdf

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