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1. 发明申请

US20160189730A1 SPEECH SEPARATION METHOD AND SYSTEM 审中-公开
标题翻译：语音分离方法与系统
公开(公告)号：US20160189730A1
公开(公告)日：2016-06-30
申请号：US14585582
申请日：2014-12-30
申请人： IFLYTEK CO., LTD. , UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
发明人： Jun DU , Yong XU , Yanhui TU , Li-Rong DAI , Zhiguo WANG , Yu HU , Qingfeng LIU
IPC分类号： G10L21/0272
CPC分类号： G10L21/0272
摘要： An example of the present invention discloses a speech separation method and a system, the method comprises: receiving a mixture speech signal to be separated; extracting a speech feature of the mixture speech signal; inputting the extracted speech feature of the mixture speech signal into a regression model for speech separation, obtaining an estimated speech feature of a target speech signal; synthesizing to obtain the target speech signal according to the estimated speech feature. Speech separation effect can be improved effectively using the present invention.
摘要翻译：本发明的一个实例公开了一种语音分离方法和系统，该方法包括：接收要分离的混合语音信号; 提取混合语音信号的语音特征; 将所提取的混合语音信号的语音特征输入到用于语音分离的回归模型中，获得目标语音信号的估计语音特征; 合成以根据估计的语音特征获得目标语音信号。使用本发明可以有效地提高语音分离效果。

2. 发明申请

US20230035947A1 VOICE RECOGNITION METHOD AND RELATED PRODUCT 有权
公开(公告)号：US20230035947A1
公开(公告)日：2023-02-02
申请号：US17780776
申请日：2020-12-14
申请人： IFLYTEK CO., LTD.
发明人： Genshun WAN , Jianqing GAO , Zhiguo WANG
IPC分类号： G10L15/183 , G06F40/289 , G10L15/22 , G06F40/247 , G10L15/04
摘要： A speech recognition method and related products are provided. The method includes acquiring text contents and text-associated time information transmitted by a plurality of terminals in a preset scenario and determining a shared text for the preset scenario based on the text contents and the text-associated time information, obtaining a customized language model for the preset scenario based on the shared text, and performing speech recognition for the preset scenario with the customized language model. The method provides improved speech recognition for the preset scenario due to the correlation between the customized language model and the preset scenario.

3. 发明申请

US20220375459A1 DECODING NETWORK CONSTRUCTION METHOD, VOICE RECOGNITION METHOD, DEVICE AND APPARATUS, AND STORAGE MEDIUM 有权
公开(公告)号：US20220375459A1
公开(公告)日：2022-11-24
申请号：US17761217
申请日：2019-12-12
申请人： IFLYTEK CO., LTD.
发明人： Jianqing GAO , Zhiguo WANG , Guoping HU
IPC分类号： G10L15/08 , G10L15/183 , G10L15/22
摘要： A method for constructing a decoding network, a speech recognition method, a device, an apparatus, and a storage medium are provided. The method for constructing a decoding network includes: acquiring a general language model, a domain language model, and a general decoding network generated based on the general language model; generating a domain decoding network based on the domain language model and the general language model; and integrating the domain decoding network with the general decoding network to obtain a target decoding network. The speech recognition method includes: decoding to-be-recognized speech data by using a target decoding network to obtain a decoding path for the to-be-recognized speech data; and determining a speech recognition result for the to-be-recognized speech data based on the decoding path for the to-be-recognized speech data.

4. 发明申请

US20210051404A1 ECHO CANCELLATION METHOD AND APPARATUS BASED ON TIME DELAY ESTIMATION 有权
公开(公告)号：US20210051404A1
公开(公告)日：2021-02-18
申请号：US16756967
申请日：2018-07-16
申请人： IFLYTEK CO., LTD.
发明人： Mingzi LI , Feng MA , Haikun WANG , Zhiguo WANG , Guoping HU
IPC分类号： H04R3/04 , H04R29/00 , G10L21/0232
摘要： An echo cancellation method based on delay estimation is provided. In the method, a microphone signal and a reference signal are received and preprocessed. In the preprocessed microphone signal and the preprocessed reference signal, frequency point signals with non-linearity in a current echo cancellation scenario are determined. A current delay estimation value is calculated based on frequency point signals without non-linearity in the microphone signal and the reference signal. The reference signal is shifted based on the current delay estimation value. An adaptive filter is updated based on the preprocessed microphone signal and the shifted reference signal, to perform echo cancellation.

5. 发明申请

US20200342887A1 MICROPHONE ARRAY-BASED TARGET VOICE ACQUISITION METHOD AND DEVICE 审中-公开
公开(公告)号：US20200342887A1
公开(公告)日：2020-10-29
申请号：US16757905
申请日：2018-07-16
申请人： IFLYTEK CO., LTD.
发明人： Dongyang XU , Haikun WANG , Zhiguo WANG , Guoping HU
IPC分类号： G10L21/0216 , H04R3/00 , G10L25/78
摘要： A microphone array-based target voice acquisition method and device, said method comprising: receiving voice signals acquired on the basis of a microphone array (101); determining a pre-selected target voice signal and a direction thereof (102); performing strong directional gain and weak directional gain on the pre-selected target voice signal, so as to obtain a strong gain signal and a weak gain signal (103); performing an endpoint detection on the basis of the strong gain signal, so as to obtain an endpoint detection result (104); and performing endpoint processing on the weak gain signal according to the endpoint detection result, so as to obtain a final target voice signal (105). The present invention can obtain an accurate and reliable target voice signal, thereby avoiding an adverse effect of the target voice quality on subsequent target voice processing.

6. 发明授权

US11508366B2 Whispering voice recovery method, apparatus and device, and readable storage medium 有权
公开(公告)号：US11508366B2
公开(公告)日：2022-11-22
申请号：US16647284
申请日：2018-06-15
申请人： IFLYTEK CO., LTD.
发明人： Jia Pan , Cong Liu , Haikun Wang , Zhiguo Wang , Guoping Hu
IPC分类号： G10L15/22 , G10L15/06 , G10L15/25 , G10L25/03 , G10L25/30 , G06N3/04
摘要： A method, an apparatus and a device for converting a whispered speech, and a readable storage medium are provided. The method is implemented based on the whispered speech converting model. The whispered speech converting model is trained in advance by using recognition results and whispered speech training acoustic features of whispered speech training data as samples and using normal speech acoustic features of normal speech data parallel to the whispered speech training data as sample labels. A whispered speech acoustic feature and a preliminary recognition result of whispered speech data are acquired, then the whispered speech acoustic feature and the preliminary recognition result are inputted into a preset whispered speech converting model to acquire a normal speech acoustic feature outputted by the model. In this way, the whispered speech can be converted to a normal speech.

7. 发明申请

US20190279036A1 END-TO-END MODELLING METHOD AND SYSTEM 审中-公开
公开(公告)号：US20190279036A1
公开(公告)日：2019-09-12
申请号：US16329368
申请日：2017-01-11
申请人： IFLYTEK CO., LTD.
发明人： Jia PAN , Shiliang ZHANG , Shifu XIONG , Si WEI , Guoping HU
IPC分类号： G06K9/62 , G06N3/04 , G06N3/08
摘要： A method and a system for end-to-end modeling are provided. The method includes: determining a topological structure of a target-based end-to-end model, where the topological structure includes an input layer, an encoding layer, an code enhancement layer, a filtering layer, a decoding layer and an output layer; the code enhancement layer adds information of a target unit to a feature sequence outputted by the encoding layer, the filtering layer filters a feature sequence added with the information of the target unit collecting multiple pieces of training data; and training parameters of the target-based end-to-end model by using the multiple pieces of the training data.

8. 发明申请

US20190180771A1 Method, Device, and Storage Medium for Evaluating Speech Quality 审中-公开
公开(公告)号：US20190180771A1
公开(公告)日：2019-06-13
申请号：US16280705
申请日：2019-02-20
申请人： Iflytek Co., Ltd.
发明人： Bing Yin , Si Wei , Guoping Hu , Su Cheng
IPC分类号： G10L25/60 , G10L25/30 , G10L15/06 , G10L15/22
摘要： A method, a device and a storage medium for evaluating speech quality include: receiving speech data to be evaluated; extracting evaluation features of the speech data to be evaluated; performing quality evaluation to the speech data to be evaluated according to the evaluation features of the speech data to be evaluated and a predetermined speech quality evaluation model, in which the speech quality evaluation model is an indication of a relationship between evaluation features of single-ended speech data and quality information of the single-ended speech data.

9. 发明授权

US09564127B2 Speech recognition method and system based on user personalized information 有权
标题翻译：基于用户个性化信息的语音识别方法和系统
公开(公告)号：US09564127B2
公开(公告)日：2017-02-07
申请号：US14655946
申请日：2013-12-20
申请人： IFLYTEK CO., LTD.
发明人： Qinghua Pan , Tingting He , Guoping Hu , Yu Hu , Qingfeng Liu
IPC分类号： G10L15/187 , G10L15/18 , G06F3/16 , G10L19/00 , G10L15/14 , G10L15/08 , G10L15/22 , G10L15/197
CPC分类号： G10L15/18 , G06F3/167 , G10L15/083 , G10L15/14 , G10L15/187 , G10L15/197 , G10L19/00 , G10L2015/227
摘要： The present invention relates to a speech recognition method and system based on user personalized information. The method comprises the following steps: receiving a speech signal; decoding the speech signal according to a basic static decoding network to obtain a decoding path on each active node in the basic static decoding network, wherein the basic static decoding network is a decoding network associated with a basic name language model; if a decoding path enters a name node in the basic static decoding network, network extending is carried out on the name node according to an affiliated static decoding network of a user, wherein the affiliated static decoding network is a decoding network associated with a name language model of a particular user; and returning a recognition result after the decoding is completed. The recognition accuracy rate of user personalized information in continuous speech recognition may be raised by using the present invention.
摘要翻译：本发明涉及一种基于用户个性化信息的语音识别方法和系统。该方法包括以下步骤：接收语音信号; 根据基本静态解码网络解码语音信号，以在基本静态解码网络中的每个主动节点上获得解码路径，其中基本静态解码网络是与基本名称语言模型相关联的解码网络; 如果解码路径进入基本静态解码网络中的名称节点，则根据用户的附属静态解码网络在名称节点上执行网络扩展，其中附属静态解码网络是与名称语言相关联的解码网络特定用户的模型; 并且在解码完成之后返回识别结果。可以通过使用本发明来提高连续语音识别中的用户个性化信息的识别准确率。

10. 发明申请

US20220383853A1 SPEECH RECOGNITION ERROR CORRECTION METHOD, RELATED DEVICES, AND READABLE STORAGE MEDIUM 有权
公开(公告)号：US20220383853A1
公开(公告)日：2022-12-01
申请号：US17773641
申请日：2020-11-17
申请人： IFLYTEK CO., LTD.
发明人： Li XU , Jia PAN , Zhiguo WANG , Guoping HU
IPC分类号： G10L15/06 , G10L15/08
摘要： A speech recognition error correction method and device, and a readable storage medium are provided. The method includes: acquiring to-be-recognized speech data and a first recognition result of the speech data, re-recognizing the speech data with reference to context information in the first recognition result to obtain a second recognition result, and determining a final recognition result based on the second recognition result. In the method, the speech data is re-recognized with reference to context information in the first recognition result, which fully considers context information in the recognition result and the application scenario of the speech data. If any error occurs in the first recognition result, the first recognition result is corrected based on the second recognition. Therefore, the accuracy of speech recognition can be improved.

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