摘要
对音频带宽扩展中的非盲目式和盲目式高频重建技术进行了分析、对比,给出了非盲目式高频重建中的6种技术及盲目式高频重建中的4种技术的基本原理,并对它们各自的优劣性进行了评价,指出盲目式高频重建法将是未来频带扩展技术发展中关注和研究的热点。
The non-blind and blind high frequency reconstruction methods for extending audio bandwidth are in- troduced and compared in this paper. The hasic principles of six specific methods related to the non-blind one and four specific methods related to the blind one are given, respectively. Their advantages and disadvantages of these methods are evaluated as well. Finally, it is pointed out that the blind high frequency reconstruction will be the research focus in the development of bandwidth extending.
出处
《电讯技术》
北大核心
2011年第2期122-126,共5页
Telecommunication Engineering
基金
国家自然科学基金资助项目(60872027
61072089)
北京市自然科学基金资助项目(4082006)
北京市属高等学校人才强教计划
北京工业大学国家大学生创新性实验项目(101000506)~~
关键词
音频信号处理
音频编码
带宽扩展
高频重建
audio signal processing
audio coding
bandwidth extension
high frequency reconstruction
