上海大学学报(自然科学版)

• 通信与信息工程 • 上一篇    下一篇

单频点频域卷积混合盲分离技术

方勇,王超
  

  1. 上海大学 通信与信息工程学院,上海 200072
  • 收稿日期:2007-01-24 修回日期:1900-01-01 出版日期:2007-08-20 发布日期:2007-08-20
  • 通讯作者: 方勇

Frequency-Domain Separation of Convolutive Mixtures Using a Single Frequency Bin

FANG Yong, WANG Chao
  

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2007-01-24 Revised:1900-01-01 Online:2007-08-20 Published:2007-08-20
  • Contact: FANG Yong

摘要: 在双频点频域卷积混合盲分离算法的基础上,提出一种单频点频域卷积混合盲分离算法.通过恰当地选取频域盲分离中短时傅里叶变换(STFT)的参数,可仅依靠一个频率片上的分离信号来完成双频点算法.相对于传统频域卷积混合盲分离方法,该方法不受各频率片顺序不确定性不统一及比例不确定性不统一的影响.仿真实验证明了该算法的有效性.

关键词: 单频点频域卷积混合盲分离
,
卷积混合, 双频点频域卷积混合盲分离

Abstract: In this paper, a novel frequency domain separation algorithm using only one frequency bin for the convolutive mixtures of sources is proposed. The method is a variation of the double-frequency-bin based separation for convolutive mixtures in which the parameters of short time Fourier transform should be selected appropriately. Since only one frequency bin is used, the proposed method involves neither inconsistency of scale indeterminacy nor permutation indeterminacy between different frequency bins in traditional frequency domain separation of convolutive mixtures. Simulation experiments show validity of the proposed single-frequency-bin based separation algorithm for convolutive mixtures.

Key words: single-frequency-bin based separation, two-frequency-bins based separation, convolutive mixtures

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