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1. 发明授权

US5634086A Method and apparatus for voice-interactive language instruction 失效
标题翻译：语音交互语言指令的方法和装置
公开(公告)号：US5634086A
公开(公告)日：1997-05-27
申请号：US529376
申请日：1995-09-18
申请人： Dimitry Rtischev , Jared C. Bernstein , George T. Chen , John W. Butzberger
发明人： Dimitry Rtischev , Jared C. Bernstein , George T. Chen , John W. Butzberger
IPC分类号： G09B19/04 , G09B7/04 , G09B19/06 , G10L15/14 , G10L15/183 , G10L15/193 , G10L15/22 , G10L3/00 , G10L5/06 , G10L9/00
CPC分类号： G10L15/193 , G09B19/06 , G10L15/183
摘要： Spoken-language instruction method and apparatus employ context-based speech recognition for instruction and evaluation, particularly language instruction and language fluency evaluation. A system can administer a lesson, and particularly a language lesson, and evaluate performance in a natural interactive manner while tolerating strong foreign accents, and produce as an output a reading quality score. A finite state grammar set corresponding to the range of word sequence patterns in the lesson is employed as a constraint on a hidden Markov model (HMM) search apparatus in an HMM speech recognizer which includes a set of hidden Markov models of target-language narrations produced by native speakers of the target language. The invention is preferably based on use of a linguistic context-sensitive speech recognizer. The invention includes a system with an interactive decision mechanism which employs at least three levels of error tolerance to simulate a natural level of patience in human-based interactive instruction. A system for a reading phase is implemented through a finite state machine having at least four states which recognizes reading error at any position in a script and which employs a first set of actions. A related system for an interactive question phase is implemented through a finite state machine, but which recognizes reading errors as well as incorrect answers while invoking a second set of actions. A linguistically-sensitive utterance endpoint detector is provided for judging termination of a spoken utterance to simulate human turn-taking in conversational speech.
摘要翻译：语言指导方法和装置采用基于语境的语音识别来进行指导和评估，特别是语言指导和语言流畅性评估。系统可以管理课程，特别是语言课程，并以自然的交互方式评估表现，同时容忍强大的外国口音，并产生读数质量得分。对应于课程中的单词序列模式的范围的有限状态语法集合被用作HMM语音识别器中的隐马尔可夫模型（HMM）搜索装置的约束，其包括产生的目标语言叙述的一组隐马尔可夫模型以母语为母语的目标语言。本发明优选地基于使用语言上下文敏感语音识别器。本发明包括具有交互式决策机制的系统，其采用至少三个误差容限级别来模拟基于人的交互式指令的自然级别的耐心。用于读取阶段的系统通过具有至少四个状态的有限状态机来实现，该状态识别脚本中任何位置处的读取错误并且采用第一组动作。用于交互式问题阶段的相关系统通过有限状态机实现，但是在调用第二组动作时识别读取错误以及不正确的答案。提供语言敏感的话语端点检测器，用于判断语音话语的终止以模拟会话语音中的人转向。

2. 发明授权

US5864810A Method and apparatus for speech recognition adapted to an individual speaker 失效
标题翻译：适用于单个扬声器的用于语音识别的方法和装置
公开(公告)号：US5864810A
公开(公告)日：1999-01-26
申请号：US375908
申请日：1995-01-20
申请人： Vassilios Digalakis , Leonardo Neumeyer , Dimitry Rtischev
发明人： Vassilios Digalakis , Leonardo Neumeyer , Dimitry Rtischev
IPC分类号： G10L15/10 , G10L15/02 , G10L15/06 , G10L15/14 , G10L17/00 , G10L5/06
CPC分类号： G10L15/07 , G10L15/142 , G10L17/00 , G10L15/02
摘要： A method and apparatus for automatic recognition of speech adapts to a particular speaker by using adaptation data to develop a transformation through which speaker independent models are transformed into speaker adapted models. The speaker adapted models are then used for speaker recognition and achieve better recognition accuracy than non-adapted models. In a further embodiment, the transformation-based adaptation technique is combined with a known Bayesian adaptation technique.
摘要翻译：用于自动识别语音的方法和装置通过使用自适应数据来开发一个转换，通过该变换将扬声器独立模型转换成说话者适应的模型，来适应特定的说话者。然后，扬声器适配模型用于说话人识别，并且比未适应的模型获得更好的识别精度。在另一个实施例中，基于变换的适应技术与已知的贝叶斯适应技术相结合。

3. 发明授权

US06760697B1 Centralized processing of digital speech data originated at the network clients of a set of servers 有权
标题翻译：数字语音数据的集中处理起源于一组服务器的网络客户端
公开(公告)号：US06760697B1
公开(公告)日：2004-07-06
申请号：US09535061
申请日：2000-03-23
申请人： Leonardo Neumeyer , Dimitry Rtischev , Diego Doval , Juan Gargiulo
发明人： Leonardo Neumeyer , Dimitry Rtischev , Diego Doval , Juan Gargiulo
IPC分类号： G10L1900
CPC分类号： G10L15/30
摘要： Described herein is a system that enables service provider's to integrate speech functionality into their applications. A service provider maintains a set of application servers. To provide a particular speech service to a client of the application server, the application server causes the client to request the speech service from another set of servers. This set of servers is responsible for providing this speech service as well as others. Such speech services include recording digital speech data at the client, and storing the recordings. Later, the application servers may retrieve the recordings, and even more, retrieve data derived from the recordings, such as data generated through speech recognition processes.
摘要翻译：这里描述的是使服务提供商能够将语音功能集成到其应用中的系统。服务提供商维护一组应用服务器。为了向应用服务器的客户端提供特定的语音服务，应用服务器使客户端从另一组服务器请求语音服务。这套服务器负责提供这种语音服务以及其他服务。这样的语音服务包括在客户端记录数字语音数据，并存储记录。之后，应用服务器可以检索记录，甚至更多地，检索从记录导出的数据，例如通过语音识别过程生成的数据。

4. 发明授权

US06302695B1 Method and apparatus for language training 失效
标题翻译：语言培训方法和设备
公开(公告)号：US06302695B1
公开(公告)日：2001-10-16
申请号：US09473550
申请日：1999-12-28
申请人： Dimitry Rtischev , Philip L. Hubbard , Leonardo Neumeyer , Kaori Shibatani
发明人： Dimitry Rtischev , Philip L. Hubbard , Leonardo Neumeyer , Kaori Shibatani
IPC分类号： G09B1906
CPC分类号： G09B19/08
摘要： A method for language fluency training on a computer system having an audio output device includes invoking a web browser program, receiving a pre-recorded file including a message in a spoken language from a conversation partner, playing the message to a user seeking fluency training in the spoken language from within the web browser program on the audio output device, asynchronously with playing the message, recording a user file including a message in the spoken language from the user in response to the message from within the web browser program, outputting the user file to the conversation partner and to a language instructor, receiving an instruction file including an instruction message in the spoken language from the language instructor in response to the user message and playing the instruction message to the user from within the web browser program on the audio output device.
摘要翻译：一种用于具有音频输出设备的计算机系统上的语言流畅度训练的方法包括调用网络浏览器程序，从对话伙伴接收包括口语的消息的预先记录的文件，向寻求流畅性训练的用户播放消息响应于来自网络浏览器程序的消息，与播放消息异步地在音频输出设备上的网络浏览器程序内的口语从用户记录包括来自用户的口语的消息的用户文件，输出用户向对话伙伴和语言指导员提交文件，从语言指导者接收包括来自语言指导者的指令消息的指令文件，以响应于用户消息，并从网络浏览器程序中的音频播放指令消息给用户输出设备。

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