Papers

Estimation and quantization of ICC-dependent phase parameters for parametric stereo audio coding

International Journal
2011~2015
작성자
이진영
작성일
2012-11-01 21:53
조회
1264
Authors : Dong-il Hyun, Young-Cheol Park, Dae Hee Youn

Year : 2012

Publisher / Conference : EURASIP Journal on Audio, Speech, and Music Processing

Volume : 27

Conventional parametric stereo (PS) audio coding employs inter-channel phase difference and overall phase difference as phase parameters. In this article, it is shown that those parameters cannot correctly represent the phase relationship between the stereo channels when inter-channel correlation (ICC) is less than one, which is common in practical situations. To solve this problem, we introduce new phase parameters, channel phase differences (CPDs), defined as the phase differences between the mono downmix and the stereo channels. Since CPDs have a descriptive relationship with ICC as well as inter-channel intensity difference, they are more relevant to represent the phase difference between the channels in practical situations. We also propose methods of synthesizing CPDs at the decoder. Through computer simulations and subjective listening tests, it is confirmed that the proposed methods produce significantly lower phase errors than conventional PS, and it can noticeably improve sound quality for stereo inputs with low ICCs.
전체 355
32 International Conference Se-Woon Jeon, Dae Hee Youn, Young-Cheol Park "Blind depth estimation based on primary-to-ambient energy ratio for 3-D acoustic depth rendering" in APSIPA ASC, 2012
31 International Journal Dong-il Hyun, Young-Cheol Park, Dae Hee Youn "Estimation and quantization of ICC-dependent phase parameters for parametric stereo audio coding" in EURASIP Journal on Audio, Speech, and Music Processing, vol.27, 2012
30 International Conference Sunwoong Choi, Dong-il Hyun, Young-cheol Park, Seokpil Lee, Dae Hee Youn "Blind Upmixing for Height and Wide Channels Based on an Image Source Method" in 133th Convention of Audio Engineering Society, pp.8752, 2012
29 International Conference Ho Seon Shin, Hong-Goo Kang, Tim Fingscheidt "Survey of Speech Enhancement Supported by a Bone Conduction Microphone" in Speech Communication; 10. ITG Symposium, 2012
28 Domestic Journal 현동일, 이석필, 박영철, 윤대희 "반위상 주요성분에 기반을 둔 개선된 음수 채널간 상관도 파라미터 합성 기법" in 한국음향학회지, vol.31, 제 6호, pp.410-418, 2012
27 Domestic Journal 최선웅, 현동일, 이석필, 박영철, 윤대희 "입체음향효과 향상을 위한 스테레오-10.2채널 블라인드 업믹스 기법" in 한국음향학회지, vol.31, 제 5호, pp.340-351, 2012
26 International Journal Myung-Suk Song, Hong-Goo Kang "Single-channel dereverberation using a non-causal minimum variance distortionless response filter" in The Journal of the Acoustical Society of America, vol.132, issue 1, 2012
25 International Conference Seong-woo Kim, Young-cheol Park, Dae Hee Youn "A variable step-size filtered-x gradient adaptive lattice algorithm for active noise control" in ICASSP, 2012
24 International Journal Jung-Won Lee, Jeung-Yoon Choi, Hong-Goo Kang "Classification of stop place in consonant-vowel contexts using feature extrapolation of acoustic-phonetic features in telephone" in The Journal of the Acoustical Society of America, vol.131, issue 2, 2012
23 International Conference Se-Woon Jeon, Young-cheol Park, Dae Hee Youn "Acoustic depth rendering for 3D multimedia applications" in ICCE, 2012