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    • 51. 发明申请
    • Method of noise reduction using correction and scaling vectors with partitioning of the acoustic space in the domain of noisy speech
    • 使用校正和缩放矢量进行噪声降低的方法,其中噪声语音领域的声学空间分割
    • US20050149325A1
    • 2005-07-07
    • US11059036
    • 2005-02-16
    • Li DengXuedong HuangAlejandro Acero
    • Li DengXuedong HuangAlejandro Acero
    • G10L15/20G10L21/02G10L21/00
    • G10L21/0208
    • A method and apparatus are provided for reducing noise in a training signal and/or test signal. The noise reduction technique uses a stereo signal formed of two channel signals, each channel containing the same pattern signal. One of the channel signals is “clean” and the other includes additive noise. Using feature vectors from these channel signals, a collection of noise correction and scaling vectors is determined. When a feature vector of a noisy pattern signal is later received, it is multiplied by the best scaling vector for that feature vector and the best correction vector is added to the product to produce a noise reduced feature vector. Under one embodiment, the best scaling and correction vectors are identified by choosing an optimal mixture component for the noisy feature vector. The optimal mixture component being selected based on a distribution of noisy channel feature vectors associated with each mixture component.
    • 提供了一种用于减少训练信号和/或测试信号中的噪声的方法和装置。 噪声降低技术使用由两个信道信号形成的立体声信号,每个信道包含相同的模式信号。 一个通道信号是“干净的”,另一个包括加性噪声。 使用来自这些信道信号的特征向量,确定噪声校正和缩放向量的集合。 当稍后接收到噪声模式信号的特征向量时,将其乘以该特征向量的最佳缩放向量,并将最佳校正向量加到乘积以产生降噪特征向量。 在一个实施例中,通过为噪声特征向量选择最佳混合分量来识别最佳缩放和校正矢量。 基于与每个混合物组分相关联的噪声通道特征向量的分布来选择最佳混合物组分。
    • 54. 发明授权
    • Fuzzy keyboard
    • 模糊键盘
    • US06654733B1
    • 2003-11-25
    • US09484095
    • 2000-01-18
    • Joshua GoodmanDaniel VenoliaXuedong Huang
    • Joshua GoodmanDaniel VenoliaXuedong Huang
    • G06F944
    • G06F3/04886G06F3/0237
    • Fuzzy keyboards, to determine a most-likely-to-be-intended keystroke or keystrokes, are disclosed. In one embodiment, a method adds each of one or more keys to each of a current list of key sequence hypotheses, to create a new list of key sequence hypotheses. The method determines a likelihood probability for each hypothesis in the new list, and removes any hypothesis failing to satisfy any of one or more thresholds. The most likely key sequence of the new list may then be displayed. Some embodiments of the invention relate specifically to soft keyboards, while other embodiments relate specifically to real, physical and hard keyboards.
    • 公开了模糊键盘,以确定最可能被预期的击键或击键。 在一个实施例中,一种方法将一个或多个密钥中的每一个添加到密钥序列假设的当前列表中的每一个,以创建密钥序列假设的新列表。 该方法确定新列表中每个假设的似然概率,并且去除不能满足一个或多个阈值中的任何一个的假设。 然后可以显示新列表的最可能的键序列。 本发明的一些实施例具体涉及软键盘,而其他实施例具体涉及实际,物理和硬盘键盘。
    • 55. 发明授权
    • Senone tree representation and evaluation
    • Senone树代表和评估
    • US5794197A
    • 1998-08-11
    • US850061
    • 1997-05-02
    • Fileno A. AllevaXuedong HuangMei-Yuh Hwang
    • Fileno A. AllevaXuedong HuangMei-Yuh Hwang
    • G10L15/02G10L15/06G10L15/14G10L15/18G10L5/06
    • G10L15/146G10L15/187G10L2015/0631
    • A speech recognition method provides improved modeling in recognition accuracy using hidden Markov models. During training, the method creates a senone tree for each state of each phoneme encountered in a data set of training words. All output distributions received for a selected state of a selected phoneme in the set of training words are clustered together in a root node of a senone tree. Each node of the tree beginning with the root node is divided into two nodes by asking linguistic questions regarding the phonemes immediately to the left and right of a central phoneme of a triphone. At a predetermined point, the tree creation stops, resulting in leaves representing clustered output distributions known as senones. The senone trees allow all possible triphones to be mapped into a sequence of senones simply by traversing the senone trees associated with the central phoneme of the triphone. As a result, unseen triphones not encountered in the training data can be modeled with senones created using the triphones actually found in the training data.
    • 语音识别方法使用隐马尔可夫模型提供了识别精度的改进建模。 在训练期间,该方法为训练词数据集中遇到的每个音素的每个状态创建一个声调树。 在训练词集合中为选定音素的选定状态接收的所有输出分布被聚集在声调树的根节点中。 从根节点开始的树的每个节点被分成两个节点,通过询问关于三音节的中心音素的左侧和右侧的音素的语言问题。 在预定的点,树的创建停止,导致代表聚集的输出分布的叶被称为senones。 声音树允许所有可能的三通电话通过遍历与三通电话的中心音素相关联的音素树来映射成一系列的单音。 因此,训练数据中未见到的看不见的三重奏可以使用在训练数据中实际发现的三通奏音而创建的声音进行建模。