Papers

Design of Time-Varying Reverberators for Low Memory Applications

International Journal
2006~2010
작성자
이진영
작성일
2008-02-01 13:35
조회
1345
Authors : Tacksung Choi, Young-Cheol Park, Dae Hee Youn

Year : 2008

Publisher / Conference : IEICE Transactions on Information and Systems

Volume : E91-D, No.2

Page : 379-382

Development of an artificial reverberator for low-memory requirements is an issue of importance in applications such as mobile multimedia devices. One possibility is to use an All-Pass Filter (APF), which is embedded in the feedback loop of the comb filter network. In this paper, we propose a reverberator employing time-varying APFs to increase the reverberation performance. By changing the gain of the APF, we can increase the number of frequency peaks perceptually. Thus, the resulting reverberation sounds much more natural, even with less memory, than the conventional approach. In this paper, we perform theoretical and perceptual analyses of artificial reverberators employing time-varying APF. Through the analyses, we derive the degree of phase variation of the APF that is perceptually acceptable. Based on the analyses, we propose a method of designing artificial reverberators associated with the time-varying APFs. Through subjective tests, it is shown that the proposed method is capable of providing perceptually comparable sound quality to the conventional methods even though it uses less memory.
전체 360
11 International Journal Kyung-Tae Kim, Min-Ki Lee, Hong-Goo Kang "Speech Bandwidth Extension using Temporal Envelope Modeling" in IEEE Signal Processing Letters, vol.15, pp.429-432, 2008
10 International Journal Junho Lee, Eunjung Song, Young-Cheol Park, Dae Hee Youn "Effective Bass Enhancement Using Second-Order Adaptive Notch Filter" in IEEE Transactions on Consumer Electronics, vol.54, issue 2, pp.663-668, 2008
9 International Journal Hee-Young Park, Ki-Man Kim, Hyun-Woo Kang, Dae Hee Youn, Chungyong Lee "A Simplified Subspace Fitting Method for Estimating Shape of a Towed Array" in IEEE Journal of Oceanic Engineering, vol.33, issue 2, pp.215-223, 2008
8 International Journal Tacksung Choi, Young-Cheol Park, Dae Hee Youn "Design of Time-Varying Reverberators for Low Memory Applications" in IEICE Transactions on Information and Systems, vol.E91-D, No.2, pp.379-382, 2008
7 International Journal Junho Lee, Young-Cheol Park, Dae Hee Youn "Robust pseudo affine projection algorithm with variable step-size" in Electronics Letters, vol.44, issue 3, pp.250-252, 2008
6 International Journal Chulhan Lee, Jeung-Yoon Choi, Kar-Ann Toh, Sangyoun Lee "Alignment-Free Cancelable Fingerprint Templates Based on Local Minutiae Information" in IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics), vol.37, issue 4, pp.980-992, 2007
5 International Journal Kyung Tae Kim, Jeung-Yoon Choi, Hong-Goo Kang "Perceptual relevance of the temporal envelope to the speech signal in the 4–7kHz band" in The Journal of the Acoustical Society of America, vol.122, issue 3, 2007
4 International Journal Chang-Heon Lee, Sung-Kyo Jung, Hong-Goo Kang "Applying A Speaker-dependent Speech Compression Technique to Concatenative TTS Synthesizers" in IEEE Transactions on Audio, Speech, and Language Processing, vol.15, 2, pp.632-640, 2007
3 International Journal Seungil Kim, Chungyong Lee, Hong-Goo Kang "Optimum beamformer in correlated source environments" in Journal of Acoustical Society of America, vol.120, issue 6, 2006
2 International Journal Kyoung Ho Bang, Young-Cheol Park, Jeongil Seo "Audio Transcoding for Audio Streams from a T-DTV Broadcasting Station to a T-DMB Receiver" in ETRI Journal, vol.28, issue5, pp.664-667, 2006