Efficient Windowing Scheme for MDCT-Based TCX in AMR-WB+

International Journal
2011-06-01 14:53
Authors : Jae-seong Lee, Young-Cheol Park, Dae Hee Youn, Kyung-ok Kang

Year : 2011

Publisher / Conference : IEICE Transactions on Information and Systems

Volume : E94-D, No.6

Page : 1341-1344

Although the AMR-WB+ coder provides excellent quality for speech signal, its coding model for music signals is not as optimal as the HE-AAC v2. The main causes of the poor quality of the AMR-WB+ TCX are the non-critical sampling and block artifacts. The new TCX windowing scheme proposed in this paper uses an MDCT with a 50% frame overlap, so that the problems of non-critical sampling and blocking artifacts are significantly mitigated. Due to long overlaps, the proposed scheme involves an additional codec delay. It is, however, moderate for audio services. The results of objective and subjective tests indicate that the proposed scheme achieves noticeable quality improvements for music signals over the previous TCX schemes.
전체 326
12 Domestic Conference 이진규, 서현선, 강홍구 "A Single Channel Speech Enhancement for Automatic speech Recognition" in 한국방송공학회, 2011
11 Domestic Conference 주영선,정치상,강홍구 "운율 경계 정보를 이용한 HMM 기반의 한국어 음성합성 시스템" in 한국방송공학회, 2011
10 International Journal Jae-seong Lee, Young-Cheol Park, Dae Hee Youn, Kyung-ok Kang "Efficient Windowing Scheme for MDCT-Based TCX in AMR-WB+" in IEICE Transactions on Information and Systems, vol.E94-D, No.6, pp.1341-1344, 2011
9 International Journal Yoomi Hur, Jonathan S. Abel, Young-Cheol Park, Dae Hee Youn "Techniques for Synthetic Reconfiguration of Microphone Arrays" in Journal of the AES, vol.59, issue 6, pp.404-418, 2011
8 International Conference Dong-il Hyun, Jeongil Seo, Young-cheol Park, Dae Hee Youn "Improved phase parameter analysis and synthesis for parametric stereo audio coding" in ICASSP, 2011
7 International Conference Jeongook Song, Hyen-o Oh, Hong-Goo Kong "Enhanced long-term predictor for Unified Speech and Audio Coding" in ICASSP, 2011
6 Domestic Conference 노훈동,김성우,이충용,윤대희 "근거리장 방위각 추정을 위한 원거리장 근사화 기법 성능 평가 및 분석" in 한국음향학회, 2011
5 Domestic Journal 전세운, 박영철, 이석필, 윤대희 "다채널 스피커 환경에서 가상 음원을 생성하기 위한 레벨 패닝 알고리즘" in 한국음향학회지, vol.30, 제 4호, pp.197-206, 2011
4 Domestic Journal Yoomi Hur, Young-Cheol Park, Seok-Pil Lee, Dae Hee Youn "Efficient Individualization Method of HRTFs Using Critical-band Based Spectral Cue Control" in 한국음향학회지, vol.30, 제 4호, pp.167-180, 2011
3 International Journal Chi-Sang Jung, Hyunson Seo, Hong-Goo Kang "Estimating Redundancy Information of Selected Features in Multi-dimensional Pattern Classification" in Pattern Recognition Letters, vol.32, issue 4, pp.590-596, 2011