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A Novel Method for Simulating Movement in Multichannel Reverberation Providing Enhanced Listener Envelopment

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A novel reverberation simulation algorithm was designed and developed to simulate movement and enhance listener envelopment in spatial soundfields created via multi-channel reproduction systems. Whereas previous methods have most often employed modulated delay lines, or some other means for continuous modulation of the spatio-temporal distribution of reverberation components, the algorithm on which this paper reports utilizes time-segmentation processes commonly characterized as granulation. Therefore, utilizing the process herein termed ‘Dynamic Overlap-and-Add’ (DOLA), spatial movement within a reverberant soundfield was achieved without the inherent Doppler shifting typically associated with continuous delay modulation. The resulting spatial imagery was evaluated by expert listeners who had experience in developing and using multi-channel reverberation algorithms, in order to identify the most artful and musically useful parametric variations provided for control of the designed reverberation algorithm.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=19660

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