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引用本文：

鲍枫,刘鑫,贾懋珅,等.音频带宽扩展技术分析与展望[J].电讯技术，2011，51（2）： - . [点击复制]
BAO Feng,LIU Xin,JIA Mao-shen,et al.Analysis and forecast of audio bandwidth extending techniques[J].，2011，51（2）： - . [点击复制]

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音频带宽扩展技术分析与展望
鲍枫,刘鑫,贾懋珅,鲍长春
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(北京工业大学电子信息与控制工程学院语音与音频信号处理研究室，北京 100124)

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。

关键词: 音频信号处理音频编码带宽扩展高频重建

DOI：

基金项目:

Analysis and forecast of audio bandwidth extending techniques

BAO Feng,LIU Xin,JIA Mao-shen,BAO Chang-chun

(Speech and Audio Signal Processing Lab, School of Electronic Information and Co ntrol Engineering,Beijing University of Technology, Beijing 100124, China)

Abstract:

The nonblind and blind high frequency reconstruction methods for extending aud io bandwidth are introduced and compared in this paper. The basic principles of six specific methods related to the nonblind one and four specific methods related to the b lind one are given, respectively. Their advantages and disadvantages of these me thods are evaluated as well.Finally,it is pointed out that the blind high freque ncy reconstruction will be the research focus in the development of bandwidth ex tending.

Key words: audio signal processing audio coding bandwidth extens ion high frequency reconstruction