个人信息Personal Information
教授
教师英文名称:DOU Weibei
教师拼音名称:douweibei
办公地点:清华大学罗姆楼4-102
联系方式:Email: douwb@tsinghua.edu.cn; Tel: 010-62781703
学位:博士学位
毕业院校:电子科技大学学士、法国雷恩大学硕士、法国卡昂大学博士
An improved audio encoding architecture based on 16-bit fixed-point DSP
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发表刊物:International Conference on Communications, Circuits and SystemsInternational Conference on Communications, Circuits and Systems
摘要:In this paper, we present a novel MPEG Audio Layer III encoder architecture. Methods to reduce the heavy computational loads are proposed, including new psycho-acoustic model based on MDCT, fast bit allocation strategy without many iterations and suitable algorithm of non-linear functions. Adopting these methods, we implemented a real-time encoder on a 50 MIPS 16-bit fixed-point DSP, which can produce an ISO/MPEG compliant bit stream. Results show that this architecture can achieve near-CD quality at the bit rate of 128kbps for dual channel with greatly reduced computational loads. It is suggested that this improved audio encoding architecture can better satisfy the requirements of the consumer market.
合写作者:Dou, WB, Hou, ZR,侯兆荣,窦维蓓,董在望
第一作者:测试老师, X,侯兆荣
论文类型:会议论文
页面范围:918-921
是否译文:否
发表时间:2002-06-29