Papers

Analysis and Design Algorithm of Time Varying Reverberator for Low Memory Applications

International Conference
~2005
작성자
한혜원
작성일
2005-10-06 22:20
조회
1195
Authors : Tacksung Choi, Junho Lee, Young-cheol Park, Daehee Youn

Year : 2005

Publisher / Conference : 119th Convention of Audio Engineering Society

Page : 6561

Development of an artificial reverberation algorithm with low memory requirements has been an issue of importance in applications such as mobile multimedia devices. One possible solution to this problem is to embed a time-varying all-pass filter to the feedback loop of the comb filter. In this paper, theoretical and perceptual analyses of reverberators embedding time-varying all-pass filters in their feedback loops are presented. The analyses are to find a perceptually acceptable degree of phase variation by the all-pass filter. Based on the analyses, we propose a new methodology of designing reverberators embedding time-varying all-pass filters. Through the subjective tests, we showed that, even with smaller memory, the proposed method is capable of providing perceptually superior sound to the previous methods involving time-invariant parameters.
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