Dattorro Convex Optimization of a Reverberator

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mailto:dattorro@stanford.edu   [http://www.stanford.edu/~dattorro Jon Dattorro]
mailto:dattorro@stanford.edu   [http://www.stanford.edu/~dattorro Jon Dattorro]
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==Convex Optimization in Audio==
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==Convex Optimization in Audio Reverberation==
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Given this industrial-strength reverberator topology, it is an open question to derive a method for choosing delayline lengths such that perceived decay is exponential. In layman's terms, it is difficult to choose delayline lengths that will not cause
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Given this industrial-strength reverberator topology, it is an open question to derive a method for choosing delayline lengths such that perceived decay is exponential.  In layman's terms, it is difficult to choose delayline lengths that will not cause undulation in this reverberator's decay-tail in response to an impulsive input.
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undulation in this reverberator's decay-tail. Choice of delayline length is an optimization problem because one must simultaneously insure that the network provides good musical qualities.
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[[Image:Progenitor.jpg|thumb|center|1024px|Reverberator after [http://www.davidgriesinger.com Griesinger] <i>ca.</i>1978]]
[[Image:Progenitor.jpg|thumb|center|1024px|Reverberator after [http://www.davidgriesinger.com Griesinger] <i>ca.</i>1978]]
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Choice of delayline length is an optimization problem because one must simultaneously insure that the network provides good musical qualities;
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<i>e.g.,</i> a good reverberator should provide little coloration (input spectral change).

Revision as of 18:59, 1 July 2010

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mailto:dattorro@stanford.edu   Jon Dattorro

Convex Optimization in Audio Reverberation

Given this industrial-strength reverberator topology, it is an open question to derive a method for choosing delayline lengths such that perceived decay is exponential.  In layman's terms, it is difficult to choose delayline lengths that will not cause undulation in this reverberator's decay-tail in response to an impulsive input.

Reverberator after Griesinger ca.1978
Reverberator after Griesinger ca.1978

Choice of delayline length is an optimization problem because one must simultaneously insure that the network provides good musical qualities; e.g., a good reverberator should provide little coloration (input spectral change).

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