Papers

Fast Bit Allocation Method for MP3/AAC Encoders

International Conference
~2005
작성자
한혜원
작성일
2005-05-28 22:09
조회
312
Authors : Kyoung Ho Bang, Keun-Sup Lee, Young-Cheol Park, Dae Hee Youn

Year : 2005

Publisher / Conference : 118th Convention of Audio Engineering Society

In MP3/AAC encoders, the quantization parameter called scalefactor controls the quantization noise and the bitrate. Tuning these encoders would require a characterization of the rate-distortion function per subband, which seems to be available only in a parametric manner. In this paper, a fast bit allocation method for MP3/AAC encoder is presented. The resulting encoder is able to produce an ISO/MPEG compliant bitstream which can guarantee better audio quality. More importantly, the number of computational steps is greatly reduced as compared to the method recommended by the ISO/MPEG committee because the efficient bit allocation algorithm significantly reduces the number of iterations required. It was found that the efficient bit allocation algorithm works best when the bit rate demanded by the psychoacoustic model in order to keep the quantization noise below the masking threshold is almost equal to the operational bit rate.
전체 326
16 International Journal Mark Hasegawa-Johnson, Ken Chen, Jennifer Cole, Sarah Borys, Sung-Suk Kim, Aaron Cohen, Tong Zhang, Jeung-Yoon Choi, Heejin Kim, Taejin Yoon, Sandra Chavarria "Simultaneous recognition of words and prosody in the Boston University Radio Speech Corpus" in Speech Communication, vol.46, issue 3-4, pp.418-439, 2005
15 International Journal Thomas Eriksson, Samuel Kim, Hong-Goo Kang, Chungyong Lee "An information-theoretic perspective on feature selection in speaker recognition" in IEEE Signal Processing Letter, vol.12, issue 7, pp.500 - 503, 2005
14 Domestic Conference Bong-Jin Lee, Hong-Goo Kang, Dae Hee Youn "Speaker Identification using Various Resolution Filterbanks in Telephone Channel Environment" in in Proc. KICS conference, 2005
13 Domestic Conference 정재웅, 이준호, 박영철, 윤대희 "주파수-워핑을 근사화한 IIR 크로스톡 제거 필터의 설계 및 구현" in 통신학회 2005 하계학술대회, 2005
12 International Conference Jae-woong Jeong, Junho Lee, Young-Cheol Park, Jeong-Tae Kim, Dae Hee Youn "Design and Implementation of IIR Crosstalk Cancellation Filters Approximating Frequency Warping" in 118th Convention of Audio Engineering Society, pp.6490, 2005
11 International Conference Kyoung Ho Bang, Keun-Sup Lee, Young-Cheol Park, Dae Hee Youn "Fast Bit Allocation Method for MP3/AAC Encoders" in 118th Convention of Audio Engineering Society, 2005
10 Domestic Conference 이민기, 김경태, 강홍구, 윤대희 "광대역 음성신호의 음질평가를 위한 바크 코히어런스 함수" in 2005년 한국음향학회 춘계학술발표대회, 2005
9 Domestic Conference Bong-Jin Lee, Hong-Goo Kang, Dae Hee Youn "Speaker Verification Using Various Resolution Filterbanks" in in Proc. the Acoustical Society of Korea Conference, 2005
8 International Journal Yang-Won Jung, Hong-Goo Kang, Chungyong Lee, Dae Hee Youn, Changkyu Choi, Jaywoo Kim "Adaptive Microphone Array System with Two-Stage Adaptation Mode Controller" in IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, vol.E88-A, pp.972-977, 2005
7 International Conference Min-seok Choi, Hong-goo Kang "An improved estimation of a priori speech absence probability for speech enhancement: in perspective of speech perception" in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2005