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1. 发明公开

EP3232336A4 METHOD AND DEVICE FOR RECOGNIZING STOP WORD 审中-公开
公开(公告)号：EP3232336A4
公开(公告)日：2018-03-21
申请号：EP15909502
申请日：2015-12-01
申请人： HUAWEI TECH CO LTD
发明人： ZHOU WENLI , WANG ZHE , HU FEIRAN
IPC分类号： G06F17/30 , G06N99/00
CPC分类号： G06F17/30536 , G06F17/30 , G06F17/30483 , G06N99/005
摘要： The present application relates to the field of computer technologies, and in particular, to a stop word identification method used in an information retrieval system. In a stop word identification method, after a first query input by a user is acquired, a second query that belongs to a same session as the first query is acquired, and a stop word in the first query is identified according to a change-based feature of each word in the first query relative to the second query. According to the solution provided by the present application, a stop word in a query can be identified more accurately, and efficiency and precision of an information retrieval system are improved.

2. 发明公开

EP2793227A4 AUDIO DATA PROCESSING METHOD, DEVICE AND SYSTEM 有权
标题翻译：音频数据处理，设备和系统
公开(公告)号：EP2793227A4
公开(公告)日：2015-03-18
申请号：EP12861377
申请日：2012-12-28
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L19/012 , G10L19/22
CPC分类号： G10L19/012 , G10L19/0204 , G10L19/18 , G10L19/22 , G10L19/265 , G10L25/21 , G10L25/78

3. 发明公开

EP2656341A4 A METHOD AND AN APPARATUS FOR PERFORMING A VOICE ACTIVITY DETECTION 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZURDURCHFÜHRUNGVONSPRACHAKTIVITÄTSERKENNUNG
公开(公告)号：EP2656341A4
公开(公告)日：2014-10-29
申请号：EP10861113
申请日：2010-12-24
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L25/78 , G10L25/93
CPC分类号： G10L25/93 , G10L25/78 , G10L2025/786
摘要： A voice activity detection apparatus (1) for determining a voice activity detection decision (VADD) for an input audio signal, wherein the voice activity detection apparatus (1) comprises a state detector (2) adapted to determine a current working state (WS) of at least two different working states of the voice activity detection apparatus (1) dependent on the input audio signal wherein each of the at least two different working states (WS) is associated with a corresponding working state parameter decision set (WSPDS) including at least one voice activity decision parameter (VADP) and a voice activity calculator (3) adapted to calculate a voice activity detection parameter value for the at least one VADP of the working state parameter decision set (WSPDS) associated with the current working state (WS) and to determine the voice activity detection decision (VADD) by comparing the calculated voice activity detection parameter value of the respective voice activity decision parameter (VADP) with a threshold.
摘要翻译：本申请涉及一种被配置为为输入音频信号提供语音活动检测决定的语音活动检测（VAD）装置。 VAD装置包括状态检测器和语音活动计算器。状态检测器被配置为基于输入音频信号确定VAD装置在至少两个不同工作状态中的当前工作状态。所述至少两个不同工作状态中的每一个与包括至少一个语音活动决策参数的对应工作状态参数决策集相关联。语音活动计算器被配置为计算与当前工作状态相关联的工作状态参数判定集的至少一个语音活动判定参数的语音活动检测参数值，并且通过比较计算出的语音来提供语音活动检测决定具有阈值的活动检测参数值。

4. 发明公开

EP2490214A4 SIGNAL PROCESSING METHOD, DEVICE AND SYSTEM 审中-公开
标题翻译：方法，设备和系统进行信号处理
公开(公告)号：EP2490214A4
公开(公告)日：2012-10-24
申请号：EP10823077
申请日：2010-10-15
申请人： HUAWEI TECH CO LTD
发明人： LIU YUANYUAN , WANG ZHE , EYAL SHLOMOT
IPC分类号： G10L25/78
CPC分类号： G10L25/78 , G10L2025/786

5. 发明公开

EP2346027A4 METHOD DEVICE AND CODER FOR VOICE ACTIVITY DETECTION 有权
标题翻译：方法和设备以及编码器，用于识别语音活动
公开(公告)号：EP2346027A4
公开(公告)日：2012-03-07
申请号：EP10821452
申请日：2010-10-14
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE , ZHANG QING
IPC分类号： G10L25/78
CPC分类号： G10L25/78

6. 发明公开

EP3131094A4 NOISE SIGNAL PROCESSING AND GENERATION METHOD, ENCODER/DECODER AND ENCODING/DECODING SYSTEM 有权
标题翻译： RAUSCHSIGNALVERARBEITUNGS- UND -ERZEUGUNGSVERFAHREN，CODIERER / DECODERER UND CODIERUNGS- / DECODIERUNGSSYSTEM
公开(公告)号：EP3131094A4
公开(公告)日：2017-05-10
申请号：EP14888957
申请日：2014-10-09
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L19/012 , G10L19/02 , G10L19/08
CPC分类号： G10L19/012 , G10L19/02 , G10L19/032 , G10L19/06 , G10L19/08 , G10L19/26
摘要： Embodiments of the present invention provide a linear prediction-based noise signal processing method, a linear prediction-based noise signal generation method, an encoder, a decoder, and an encoding and decoding system. The noise signal processing method according to the embodiments of the present invention includes: acquiring a noise signal, and obtaining a linear prediction coefficient according to the noise signal; filtering the noise signal according to the linear prediction coefficient, to obtain a linear prediction residual signal; obtaining a spectral envelope of the linear prediction residual signal according to the linear prediction residual signal; and encoding the spectral envelope of the linear prediction residual signal. According to the noise processing method, the noise generation method, the encoder, the decoder, and the encoding and decoding system that are in the embodiments of the present invention, more spectral details of an original background noise signal can be recovered, so that comfort noise can be closer to original background noise in terms of subjective auditory perception of a user, and subjective perception quality of the user is improved.
摘要翻译：本发明的实施例提供了一种基于线性预测的噪声信号处理方法，基于线性预测的噪声信号生成方法，编码器，解码器以及编码和解码系统。根据本发明实施例的噪声信号处理方法包括：获取噪声信号，并根据噪声信号获得线性预测系数; 根据线性预测系数对噪声信号进行滤波，以获得线性预测残差信号; 根据线性预测残差信号获得线性预测残差信号的频谱包络; 并对线性预测残差信号的频谱包络进行编码。根据本发明实施例中的噪声处理方法，噪声生成方法，编码器，解码器以及编码和解码系统，可以恢复原始背景噪声信号的更多光谱细节，从而舒适度就用户的主观听觉感知而言，噪声可以更接近原始背景噪声，并且用户的主观感知质量得到改善。

7. 发明公开

EP3144933A4 AUDIO CODING METHOD AND APPARATUS 有权
标题翻译：音频编码方法和设备
公开(公告)号：EP3144933A4
公开(公告)日：2017-03-22
申请号：EP15811228
申请日：2015-06-23
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L19/02 , G10L19/20 , G10L19/22
CPC分类号： G10L19/22 , G10L19/02 , G10L19/0204 , G10L19/035 , G10L19/04 , G10L19/06 , G10L19/20 , G10L25/03
摘要： An audio encoding method and an apparatus are provided. The method includes: determining sparseness of distribution, on spectrums, of energy of N input audio frames (101), where the N audio frames include a current audio frame, and N is a positive integer; and determining, according to the sparseness of distribution, on the spectrums, of the energy of the N audio frames, whether to use a first encoding method or a second encoding method to encode the current audio frame (102), where the first encoding method is an encoding method that is based on time-frequency transform and transform coefficient quantization and that is not based on linear prediction, and the second encoding method is a linear-predication-based encoding method. According to the method, when an audio frame is encoded, sparseness of distribution, on a spectrum, of energy of the audio frame is considered, which can reduce encoding complexity and ensure that encoding is of relatively high accuracy.

8. 发明公开

EP2437256A4 METHOD AND DEVICE FOR REALIZING TRACE OF BACKGROUND NOISE IN COMMUNICATION SYSTEM 有权
标题翻译：方法和装置，用于跟踪背景噪声的通信系统
公开(公告)号：EP2437256A4
公开(公告)日：2012-04-11
申请号：EP10823082
申请日：2010-10-15
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L11/02 , G10L21/02 , G10L21/0208 , G10L25/84
CPC分类号： G10L21/0208 , G10L25/84
摘要： A method and a device for tracking background noise in a communication system are provided, which relate to the field of communications. The method includes: calculating a Signal to Noise Ratio (SNR) of a current frame according to input audio signals; increasing a frame counter, and calculating tone features and signal steadiness features of the current frame if the SNR of the current frame is not smaller than a threshold 1; judging the possibility of a time window including a noise interval according to the calculated tone feature values and signal steadiness feature values of each frame of the time window when the frame counter is increased to the length of the time window; and extracting noise features in the time window. Existence of background noise is analyzed continuously in a time window of a certain length, so that background noise that changes frequently and dramatically can be detected or tracked rapidly. Meanwhile, tone features, spectrum peak position steadiness, and maximum PVR position steadiness are detected, thus significantly reducing miss-tracking phenomenon of background noise in music signals.

9. 发明公开

EP3139379A4 AUDIO CODING METHOD AND RELATED DEVICE 无效
标题翻译： AUDIOCODIERUNGSVERFAHREN UNDZUGEHÖRIGEVORRICHTUNG
公开(公告)号：EP3139379A4
公开(公告)日：2017-04-12
申请号：EP14890742
申请日：2014-11-05
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L19/20
CPC分类号： G10L19/22 , G10L19/02 , G10L19/04 , G10L19/12 , G10L19/20
摘要： An audio coding method and a related apparatus are disclosed. The audio coding method includes: estimating reference linear prediction efficiency of a current audio frame; determining an audio coding scheme that matches the reference linear prediction efficiency of the foregoing current audio frame; and performing audio coding on the foregoing current audio frame according to the audio coding scheme that matches the reference linear prediction efficiency of the foregoing current audio frame. The technical solutions provided in embodiments of the present invention help reduce overheads of audio coding.
摘要翻译：公开了一种音频编码方法和相关装置。音频编码方法包括：估计当前音频帧的参考线性预测效率; 确定与前述当前音频帧的参考线性预测效率相匹配的音频编码方案; 以及根据与上述当前音频帧的参考线性预测效率相匹配的音频编码方案对前述当前音频帧执行音频编码。在本发明的实施例中提供的技术方案有助于减少音频编码的开销。

10. 发明公开

EP2619753A4 METHOD AND APPARATUS FOR ADAPTIVELY DETECTING VOICE ACTIVITY IN INPUT AUDIO SIGNAL 有权
标题翻译：用于在音频输入信号中自动识别语言活动的方法和设备
公开(公告)号：EP2619753A4
公开(公告)日：2013-08-28
申请号：EP10861147
申请日：2010-12-24
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHE
IPC分类号： G10L25/78
CPC分类号： G10L21/0308 , G10L15/20 , G10L19/0208 , G10L19/22 , G10L25/78 , G10L25/84 , G10L2025/786
摘要： A method and an apparatus for adaptively detecting a voice activity in an input audio signal consisting of frames comprising the steps of: determining a noise characteristic (nc) of the input signal based at least on a received input frame of the input audio signal; deriving a VAD parameter (vp) adapted to or selected dependent on said noise characteristic of the input audio signal; and comparing the derived VAD parameter with a threshold value to provide a voice activity detection decision.

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