Multichannel artificial reverberation algorithm to control perceived direction and distance is described in this paper. In conventional algorithms using IIR filters, reverberation time is the only parameter to be controlled. Moreover, since the convolution-based conventional algorithms apply only same impulse responses, but not considering sound localization, it was not realistic enough. The new algorithm proposed in this paper utilizes early reflections segmented according to the azimuth from which direct sound comes and controls perceived direction by panning the direct sound, and controls perceived distance by adjusting Energy Decay Curve (EDC) of reverberation and gain of the direct sound. In addition, the algorithm enhances Listener Envelopment(LEV) to make late reverberation incoherent among channels.
Seo, Jeong-Hun; Shim, Hwan; Sung, Koeng-Mo; Yoo, Jae-Hyoun
Affiliations: Electronics and Telecommunications Research Institute; Seoul National University(See document for exact affiliation information.)
AES Convention: 119 (October 2005) Paper Number: 6555
Publication Date: October 1, 2005
Subject: Multichannel Sound
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