| 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 nonblind 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 nonblind 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 |
