盲

The main work of this thesis includes three aspects:(1) study the existing order adjustment methods and examine the characteristics of speeches, a new order adjustment method based on energy correlation is proposed. It is applied to JADE, KM, c-FastICA, and CMN to separate the convolutive mixtures from simulated and actual speeches, the results of analysis and comparison of separation performance verify the validity of the method.

针对卷积混合语音盲分离的频域算法，本文主要做了以下三方面工作：(1)研究了现有调序方法和语音信号的特性，提出了一种基于能量相关的调序方法，并应用JADE、KM、c-FastICA和CMN等四种复数BSS算法，对仿真和实际语音信号进行了盲分离，分析比较了分离性能，验证了本文调序方法的有效性。

We deduce an BSS algorithm for time-delay mixture model and an algorithm for the convolutive mixture model under the principal of Maximum Output Entropy, separately. We also provide a comparison between the two separating structures of the convolutive mixture model.

我们在最大输出熵的原则下，分别推导得出了一种时延混合模型的盲分离算法和卷积混合模型的盲分离算法，而且给出了对于卷积混合模型的两种分离结构及两者之间的优缺点。

In this paper, a time-domain blind source separation algorithm for non-stationary convolutive mixtures is proposed by reprogramming the vectors of convolutive mixture model and generalizing the joint approximate diagonalization method.

摘要该文将卷积混合盲源分离模型中的向量进行重新规划并对联合近似对角化方法加以推广，提出一种非平稳卷积混合信号的时域盲源分离算法。

The original Infomax is only applied in the instantaneous mixture and in the single channel blind deconvolution. This thesis applies the idea to blind sources separation in multiple channel convolutive mixture.

Infomax算法适用于瞬时混合情况下的盲分离和单通道盲解卷积问题，本文将Infomax算法推广到多通道卷积混合，对算法进行仿真，取得了不错的效果。

Final, the number of the sources is estimated with multistage clutstering techniques and the corresponding sources are extracted. The proposed algorithm can avoid suffering the error propagation of the deflation technique, which exists in all sequential algorithms.4. A new post-processing method for convolutive mixtures blind speech separation is proposed.

针对现有卷积混合盲源分离的频域算法存在的问题，即恢复出的信号是源信号和一个未知的滤波器的卷积，且由于部分频率点处盲源分离方法的失效和无法精确解决排列和尺度模糊问题，分离出的信号中会泄露进其余的信号分量，影响分离性能。

This paper only does research on adaptive blind source separation algorithm in two mixture models梚nstantaneous mixture and convolutive mixture.Blind source separation needs high order statistics.

盲分离算法需要用到高阶统计量，互累积量迫零法是一种直接利用高阶统计量的自适应盲分离算法。

Based on the derived frequency representation of each frame for convolutive mixtures, a modified discrete Fourier transform is proposed for the frequency domain convolutive blind separation. MDFT serves as an optimal transform in the minimum square error sense to replace the traditional DFT.

针对频域卷积混合盲分离，依据所导出的卷积混合信号每帧的频域表示模型，提出了一种最小均方误差意义下的最优变换－修正离散傅里叶变换，用于代替频域卷积混合盲分离中常用的离散傅里叶变换。

It is experimently proved that our blind watermark algorithm based on BSS is satisfying.

实验证明，这种基于盲信号分离的盲水印算法效果令人满意。

Objective 1 To investigate the incidence of neglect syndrome and hemianopia after brain damage, and explore the influence factors of the incidence of neglect syndrome and relations between neglect syndrome and brain damage location, and also neglect syndrome and hemianopia.

了解脑损伤后忽视症和偏盲的发生率、忽视症发生的影响因素，以及忽视症与脑损伤的部位、忽视症与偏盲之间的关系。2。

Results The clinical manifestations of TOBS comprised transient unconsciousness, vertigo, dyskinesia of eyeball, abnormality of pupils, dyskinesia of limbs, hemianopsia or cortical blindness, ataxia and memory impairment. MRI showed the local infarction in thalami, cerebellum, midbrain, pons, occipital lobe, temporal inner surface. The features of DSA were occlusion or stenosis in basilar artery and vertebral artery.

结果 TOBS的临床主要表现为一过性意识障碍、眩晕、眼球运动障碍及瞳孔的变化、肢体运动障碍、偏盲或皮质盲、共济失调及记忆功能损害；磁共振显示梗死灶在丘脑、小脑、中脑、脑桥、枕叶、颞叶内侧面；数字减影血管造影显示为基底动脉及椎动脉闭塞或狭窄。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。