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    • 2. 发明授权
    • Language model learning system, language model learning method, and language model learning program
    • 语言模型学习系统,语言模型学习方法和语言模型学习程序
    • US08831943B2
    • 2014-09-09
    • US12302962
    • 2007-05-30
    • Tadashi EmoriYoshifumi Onishi
    • Tadashi EmoriYoshifumi Onishi
    • G10L15/04G10L15/06G10L15/00G10L15/197G10L15/183
    • G10L15/197G10L15/183
    • A language model learning system for learning a language model on an identifiable basis relating to a word error rate used in speech recognition. The language model learning system (10) includes a recognizing device (101) for recognizing an input speech by using a sound model and a language model and outputting the recognized word sequence as the recognition result, a reliability degree computing device (103) for computing the degree of reliability of the word sequence, and a language model parameter updating device (104) for updating the parameters of the language model by using the degree of reliability. The language model parameter updating device updates the parameters of the language model to heighten the degree of reliability of the word sequence the computed degree of reliability of which is low when the recognizing device recognizes by using the updated language model and the reliability degree computing device computes the degree of reliability.
    • 一种语言模型学习系统,用于在与语音识别中使用的单词错误率相关的可识别基础上学习语言模型。 语言模型学习系统(10)包括:识别装置(101),用于通过使用声音模型和语言模型识别输入语音,并输出识别的字序列作为识别结果;可靠度计算装置(103),用于计算 字序列的可靠度,以及语言模型参数更新装置(104),用于通过使用可靠度更新语言模型的参数。 语言模型参数更新装置更新语言模型的参数,以在识别装置通过使用更新的语言模型识别并且可靠性度计算装置计算时,提高计算的可靠性程度低的字序列的可靠性程度 可靠性程度。
    • 4. 发明申请
    • RECOGNIZER WEIGHT LEARNING DEVICE, SPEECH RECOGNIZING DEVICE, AND SYSTEM
    • 识别器重量学习装置,语音识别装置和系统
    • US20100318358A1
    • 2010-12-16
    • US12525930
    • 2008-01-18
    • Yoshifumi OnishiTadashi Emori
    • Yoshifumi OnishiTadashi Emori
    • G10L15/00
    • G10L15/08G10L15/32
    • A speech recognition apparatus (110) selects an optimum recognition result from recognition results output from a set of speech recognizers (s1-sM) based on a majority decision. This decision is implemented with taking into account weight values, as to the set of the speech recognizers, learned by a learning apparatus (100). The learning apparatus includes a unit (103) selecting speech recognizers corresponding to characteristics of speech for learning (101), a unit (104) finding recognition results of the speech for learning by using the selected speech recognizers, a unit (105) unifying the recognition results and generating a word string network, and a unit (106) finding weight values concerning a set of the speech recognizers by implementing learning processing. When finding weight values, the learning apparatus selects a word from each arc set in the word string network based on a majority decision which is taken into account candidates of weight value, and outputs weight value candidates which minimize a recognition error rate of a word string formed of the selected words, as a learning result.
    • 语音识别装置(110)基于多数决定从一组语音识别器(s1-sM)输出的识别结果中选择最佳识别结果。 考虑到由学习装置(100)学习的语音识别器的集合的权重值来实现该决定。 所述学习装置包括:单元(103),选择与学习用语音(101)对应的语音识别符,单元(104),通过使用所选择的语音识别器寻找用于学习的语音的识别结果的单元(104) 识别结果并产生字串网络;以及单元(106),通过实施学习处理来找出关于一组语音识别器的权重值。 当找到权重值时,学习装置基于考虑到权重值的候选的多数决定来选择字串网络中的每个弧设置的单词,并且输出使字串的识别错误率最小化的权重值候选 由所选词组成,作为学习成果。
    • 5. 发明申请
    • SPEECH SIGNAL PROCESSING DEVICE
    • 语音信号处理装置
    • US20120004916A1
    • 2012-01-05
    • US13257103
    • 2010-02-18
    • Tadashi Emori
    • Tadashi Emori
    • G10L11/00
    • H04R5/04
    • A speech signal processing device is equipped with a power acquisition unit, a probability distribution acquisition unit, and a correspondence degree determination unit. The power acquisition unit accepts an inputted speech signal and, based on the accepted speech signal, acquires power representing the intensity of a speech sound represented by the speech signal. The probability distribution acquisition unit acquires a probability distribution using the intensity of the power acquired by the power acquisition unit as a random variable. The correspondence degree determination unit determines whether a correspondence degree representing a degree that power acquired by the power acquisition unit in a case that a predetermined reference speech signal is inputted into the power acquisition unit corresponds with predetermined reference power is higher than a predetermined reference correspondence degree, based on the probability distribution acquired by the probability distribution acquisition unit.
    • 语音信号处理装置配备有功率获取单元,概率分布获取单元和对应度确定单元。 功率获取单元接受输入的语音信号,并且基于所接受的语音信号获取表示由语音信号表示的语音的强度的功率。 概率分布获取单元使用由功率获取单元获取的功率的强度作为随机变量来获取概率分布。 对应度确定单元确定表示在预定参考语音信号被输入到功率获取单元的情况下由功率获取单元获取的功率对应于预定参考功率的程度是否高于预定参考对应度 基于由概率分布获取单元获取的概率分布。
    • 6. 发明申请
    • AUDIO RECOGNITION DEVICE AND AUDIO RECOGNITION METHOD
    • 音频识别装置和音频识别方法
    • US20100324897A1
    • 2010-12-23
    • US12518075
    • 2007-12-07
    • Tadashi EmoriYoshifumi Onishi
    • Tadashi EmoriYoshifumi Onishi
    • G10L15/06
    • G10L15/187G10L15/04G10L15/063G10L15/142G10L15/183G10L15/197
    • Acoustic models and language models are learned according to a speaking length which indicates a length of a speaking section in speech data, and speech recognition process is implemented by using the learned acoustic models and language models. A speech recognition apparatus includes means (103) for detecting a speaking section in speech data (101) and for generating a section information which indicates the detected speaking section, means (104) for recognizing a data part corresponding to a section information in the speech data as well as text data (102) written from the speech data and for classifying the data part based on a speaking length thereof, and means (106) for learning acoustic models and language models (107) by using the classified data part (105).
    • 声学模型和语言模型根据说话长度来学习,该长度表示语音数据中的发音部分的长度,并且通过使用学习的声学模型和语言模型来实现语音识别过程。 语音识别装置包括用于检测语音数据(101)中的说话部分并且用于生成指示检测到的说话部分的部分信息的装置(103),用于识别对应于语音中的部分信息的数据部分的装置(104) 数据以及从语音数据写入的文本数据(102),并且用于基于其语音长度对数据部分进行分类;以及用于通过使用分类数据部分(105)来学习声学模型和语言模型(107)的装置(106) )。
    • 8. 发明授权
    • Speech reproducing system with efficient speech-rate converter
    • 具有高效语音速率转换器的语音再现系统
    • US5933802A
    • 1999-08-03
    • US872438
    • 1997-06-10
    • Tadashi Emori
    • Tadashi Emori
    • G10L19/00G10L19/04G10L19/12G10L21/04G10L9/00
    • G10L21/04G10L19/04
    • In a speech reproducing system, a speech coder receives an input speech signal to output a speech coded information including a pitch information of the input speech signal and a mode information indicative of a short-time characteristics of the input speech signal, and a speech decoder receives and decodes the speech coded information to generate a decoded speech signal. A speech-rate converter receives the pitch information and the mode information included in the speech coded information and the decoded speech signal, to convert the speech-rate of the decoded speech signal by using the pitch information and the mode information, thereby to generate an output speech signal.
    • 在语音再现系统中,语音编码器接收输入语音信号以输出包括输入语音信号的音调信息和表示输入语音信号的短时间特性的模式信息的语音编码信息,以及语音解码器 接收和解码语音编码信息以产生解码语音信号。 话音速率转换器接收音调信息和包括在语音编码信息和解码语音信号中的模式信息,通过使用音调信息和模式信息来转换解码语音信号的话音速率,由此产生 输出语音信号。
    • 10. 发明授权
    • Signal correction apparatus equipped with correction function estimation unit
    • 信号校正装置配备有校正功能估计单元
    • US08842843B2
    • 2014-09-23
    • US13129646
    • 2009-09-03
    • Tadashi EmoriMasanori Tsujikawa
    • Tadashi EmoriMasanori Tsujikawa
    • H04R29/00H04R3/00G10L21/02
    • H04R3/005G10L21/02
    • A signal correction apparatus receives an input audio signal (serving as a first sound reception means). The signal correction apparatus computes, at every frequency, first power that indicates magnitude of sound represented by the input audio signal (serving as a first power computation means). The signal correction apparatus estimates a correction function that is a continuous function defining a relation between each frequency and a correction coefficient used to approximate the first power computed at that frequency to the reference power predetermined for that frequency (serving as a correction function estimation means). The signal correction apparatus multiplies the computed first power by the correction coefficient acquired in accordance with the relation defined by the estimated correction function so as to correct the first power at every frequency (serving as a power correcting means).
    • 信号校正装置接收输入音频信号(作为第一声音接收装置)。 信号校正装置在每个频率处计算指示由输入音频信号(用作第一功率计算装置)表示的声音的大小的第一功率。 信号校正装置估计校正函数,该校正函数是定义每个频率与用于将在该频率处计算出的第一功率近似的校正系数之间的关系的连续函数,作为为该频率预定的参考功率(用作校正函数估计装置) 。 信号校正装置将计算出的第一功率乘以根据由估计校正函数定义的关系获取的校正系数,以校正每个频率的第一功率(用作功率校正装置)。