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中文摘要：
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。
英文摘要：
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.
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