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1. 发明授权

US10083703B2 Frequency domain pitch period based encoding and decoding in accordance with magnitude and amplitude criteria 有权
公开(公告)号：US10083703B2
公开(公告)日：2018-09-25
申请号：US15904140
申请日：2018-02-23
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takehiro Moriya , Yutaka Kamamoto , Noboru Harada , Yusuke Hiwasaki , Masahiro Fukui
IPC分类号： G10L19/00 , G10L19/09 , G10L25/90 , G10L19/032 , G10L19/02 , G10L19/08
CPC分类号： G10L19/09 , G10L19/0017 , G10L19/0212 , G10L19/032 , G10L19/08 , G10L25/90 , G10L2025/903 , G10L2025/906
摘要： A frequency-domain sample interval corresponding to a time-domain pitch period L corresponding to a time-domain pitch period code of an audio signal in a given time period is obtained as a converted interval T1, a frequency-domain pitch period T is chosen from among candidates including the converted interval T1 and integer multiples U×T1 of the converted interval T1, and a frequency-domain pitch period code indicating how many times the frequency-domain pitch period T is greater than the converted interval T1 is obtained. The frequency-domain pitch period code is output so that a decoding side can identify the frequency-domain pitch period T.

2. 发明授权

US10083698B2 Packet loss concealment for speech coding 有权
公开(公告)号：US10083698B2
公开(公告)日：2018-09-25
申请号：US15677027
申请日：2017-08-15
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Yang Gao
IPC分类号： G10L19/005 , G10L19/09 , G10L19/083 , G10L19/22
CPC分类号： G10L19/005 , G10L19/083 , G10L19/09 , G10L19/22
摘要： A speech coding method of reducing error propagation due to voice packet loss, is achieved by limiting or reducing a pitch gain only for the first subframe or the first two subframes within a speech frame, the excitation of a next frame is obtained according to the reduced or limited pitch gain value of the first subframe, and the next frame is encoded according to the obtained excitation. The method is used for a voiced speech class.

3. 发明申请

US20180268826A1 METHOD AND SYSTEM FOR DECODING LEFT AND RIGHT CHANNELS OF A STEREO SOUND SIGNAL 审中-公开
公开(公告)号：US20180268826A1
公开(公告)日：2018-09-20
申请号：US15761883
申请日：2016-09-22
申请人： VOICEAGE CORPORATION
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L19/008 , G10L25/03 , G10L25/51 , G10L19/06 , G10L19/09 , G10L19/032
CPC分类号： G10L19/008 , G10L19/002 , G10L19/032 , G10L19/06 , G10L19/09 , G10L19/24 , G10L25/03 , G10L25/21 , G10L25/51 , H04S1/007 , H04S2400/01 , H04S2400/03
摘要： A stereo sound decoding method and system decode left and right channels of a stereo sound signal, using received encoding parameters comprising encoding parameters of a primary channel, encoding parameters of a secondary channel, and a factor β. The primary channel encoding parameters comprise LP filter coefficients of the primary channel. The primary channel is decoded in response to the primary channel encoding parameters. The secondary channel is decoded using one of a plurality of coding models, wherein at least one of the coding models uses the primary channel LP filter coefficients to decode the secondary channel. The decoded primary and secondary channels are time domain up-mixed using the factor β to produce the decoded left and right channels of the stereo sound signal, wherein the factor β determines respective contributions of the primary and secondary channels upon production of the left and right channels.

4. 发明申请

US20180233154A1 METHOD AND SYSTEM FOR ENCODING LEFT AND RIGHT CHANNELS OF A STEREO SOUND SIGNAL SELECTING BETWEEN TWO AND FOUR SUB-FRAMES MODELS DEPENDING ON THE BIT BUDGET 审中-公开
公开(公告)号：US20180233154A1
公开(公告)日：2018-08-16
申请号：US15761858
申请日：2016-09-22
申请人： VOICEAGE CORPORATION
发明人： Tommy Vaillancourt , Milan Jelinek
IPC分类号： G10L19/008 , H04S1/00 , G10L19/24 , G10L19/032 , G10L19/002
CPC分类号： G10L19/008 , G10L19/002 , G10L19/032 , G10L19/06 , G10L19/09 , G10L19/24 , G10L25/03 , G10L25/21 , G10L25/51 , H04S1/007 , H04S2400/01 , H04S2400/03
摘要： A stereo sound encoding method and system, for encoding left and right channels of a stereo sound signal, down mix the left and right channels of the stereo sound signal to produce primary and secondary channels and encode the primary and secondary channels. Encoding the primary channel and encoding the secondary channel comprise determining a first bit budget to encode the primary channel and a second bit budget to encode the secondary channel. If the second bit budget is sufficient, the secondary channel is encoded using a four subframes model and, if the second bit budget is insufficient for using the four subframes model, the secondary channel is encoded using a two subframes model.

5. 发明申请

US20180068669A1 AUDIO SIGNAL PROCESSING DEVICE, AUDIO SIGNAL PROCESSING METHOD, AND AUDIO SIGNAL PROCESSING PROGRAM 审中-公开
公开(公告)号：US20180068669A1
公开(公告)日：2018-03-08
申请号：US15706474
申请日：2017-09-15
申请人： NTT DOCOMO, INC.
发明人： Kimitaka Tsutsumi , Kei Kikuiri , Atsushi Yamaguchi
IPC分类号： G10L19/09 , H04L1/00 , G10L19/135 , G10L19/005 , G10L19/07 , G10L19/00
CPC分类号： G10L19/09 , G10L19/005 , G10L19/07 , G10L19/135 , G10L2019/0011 , H04L1/00
摘要： An audio signal processing device comprises a discontinuity detector configured to determine an occurrence of a discontinuity from a sudden increase of an amplitude of decoded audio obtained by decoding the first audio packet which is received correctly after an occurrence of a packet loss, and a discontinuity corrector for correcting the discontinuity of the decoded audio.

6. 发明申请

US20180040330A1 ENCODING METHOD, DECODING METHOD, ENCODER APPARATUS, DECODER APPARATUS, AND RECORDING MEDIUM FOR PROCESSING PITCH PERIODS CORRESPONDING TO TIME SERIES SIGNALS 审中-公开
公开(公告)号：US20180040330A1
公开(公告)日：2018-02-08
申请号：US15725653
申请日：2017-10-05
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takehiro MORIYA , Noboru HARADA , Yutaka KAMAMOTO
IPC分类号： G10L19/09 , G10L19/032
CPC分类号： G10L19/09 , G10L19/032
摘要： In encoding, pitch periods for time series signals in a predetermined time interval are calculated, and a code corresponding thereto is output. In that encoding, the resolutions for expressing the pitch periods and/or a pitch period encoding mode are switched according to whether an index indicating a periodicity and/or stationarity level of the time series signals satisfies a condition indicating high or low in periodicity and/or stationarity. In that decoding, according to whether an index indicating a periodicity and/or stationarity level, the index being included in or obtained from an input code corresponding to the predetermined time interval, satisfies a condition indicating high periodicity and/or stationarity, a decoding mode for a code, included in the input code, corresponding to pitch periods is switched to decode the code corresponding to the pitch periods to obtain the pitch periods corresponding to the predetermined time interval.

7. 发明申请

US20180040329A1 ENCODING METHOD, DECODING METHOD, ENCODER APPARATUS, DECODER APPARATUS, AND RECORDING MEDIUM FOR PROCESSING PITCH PERIODS CORRESPONDING TO TIME SERIES SIGNALS 审中-公开
公开(公告)号：US20180040329A1
公开(公告)日：2018-02-08
申请号：US15725626
申请日：2017-10-05
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takehiro MORIYA , Noboru HARADA , Yutaka KAMAMOTO
IPC分类号： G10L19/09 , G10L19/032
CPC分类号： G10L19/09 , G10L19/032
摘要： In encoding, pitch periods for time series signals in a predetermined time interval are calculated, and a code corresponding thereto is output. In that encoding, the resolutions for expressing the pitch periods and/or a pitch period encoding mode are switched according to whether an index indicating a periodicity and/or stationarity level of the time series signals satisfies a condition indicating high or low in periodicity and/or stationarity. In that decoding, according to whether an index indicating a periodicity and/or stationarity level, the index being included in or obtained from an input code corresponding to the predetermined time interval, satisfies a condition indicating high periodicity and/or stationarity, a decoding mode for a code, included in the input code, corresponding to pitch periods is switched to decode the code corresponding to the pitch periods to obtain the pitch periods corresponding to the predetermined time interval.

8. 发明申请

US20160379651A1 AUDIO DECODER AND METHOD FOR PROVIDING A DECODED AUDIO INFORMATION USING AN ERROR CONCEALMENT BASED ON A TIME DOMAIN EXCITATION SIGNAL 审中-公开
标题翻译：使用基于时域激活信号的错误信号提供解码音频信息的音频解码器和方法
公开(公告)号：US20160379651A1
公开(公告)日：2016-12-29
申请号：US15261443
申请日：2016-09-09
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Jérémie Lecomte , Goran Markovic , Michael Schnabel , Grzegorz Pietrzyk
IPC分类号： G10L19/005 , G10L19/09 , G10L19/125
CPC分类号： G10L19/005 , G10L19/02 , G10L19/08 , G10L19/09 , G10L19/125 , G10L2019/0011
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes an error concealment configured to provide an error concealment audio information for concealing a loss of an audio frame following an audio frame encoded in a frequency domain representation using a time domain excitation signal.
摘要翻译：一种用于根据编码的音频信息提供解码的音频信息的音频解码器包括错误隐藏，该错误隐藏被配置为提供一个错误隐藏音频信息，用于隐藏在频域表示中使用时间编码的音频帧之后的音频帧的丢失域激励信号。

9. 发明申请

US20160307578A1 METHOD AND APPARATUS FOR POLYPHONIC AUDIO SIGNAL PREDICTION IN CODING AND NETWORKING SYSTEMS 有权
标题翻译：编码和网络系统中多波段音频信号预测的方法与装置
公开(公告)号：US20160307578A1
公开(公告)日：2016-10-20
申请号：US15197326
申请日：2016-06-29
申请人： The Regents of the University of California
发明人： Kenneth Rose , Tejaswi Nanjundaswamy
IPC分类号： G10L19/09 , G10L19/26
CPC分类号： G10L19/09 , G10L19/005
摘要： A method, device, and apparatus provide the ability to predict a portion of a polyphonic audio signal for compression and networking applications. The solution involves a framework of a cascade of long term prediction filters, which by design is tailored to account for all periodic components present in a polyphonic signal. This framework is complemented with a design method to optimize the system parameters. Specialization may include specific techniques for coding and networking scenarios, where the potential of each enhanced prediction is realized to considerably improve the overall system performance for that application. One specific technique provides enhanced inter-frame prediction for the compression of polyphonic audio signals, particularly at low delay. Another specific technique provides improved frame loss concealment capabilities to combat packet loss in audio communications.
摘要翻译：方法，装置和装置提供预测用于压缩和联网应用的复音音频信号的一部分的能力。该解决方案涉及一系列长期预测滤波器的框架，其通过设计来定制以考虑存在于复音信号中的所有周期性分量。该框架补充了设计方法来优化系统参数。专业化可以包括用于编码和联网场景的特定技术，其中实现每个增强预测的潜力以显着提高该应用的整体系统性能。一种具体的技术为复音音频信号的压缩提供增强的帧间预测，特别是在低延迟下。另一种具体技术提供了改进的帧丢失隐藏能力来抵抗音频通信中的分组丢失。

10. 发明授权

US09414010B2 Systems and methods of providing modified media content 有权
标题翻译：提供修改的媒体内容的系统和方法
公开(公告)号：US09414010B2
公开(公告)日：2016-08-09
申请号：US13471851
申请日：2012-05-15
申请人： Andrej Ljolje
发明人： Andrej Ljolje
IPC分类号： H04H60/33 , H04N5/783 , G06F17/30 , G10L21/04 , G11B27/00 , G11B27/034 , H04N5/445 , H04N21/43 , H04N21/8549 , G10L19/09 , H04N5/781 , H04N5/85
CPC分类号： H04N5/783 , G06F17/30787 , G06F17/30796 , G06F17/30843 , G10L19/09 , G10L21/04 , G11B27/005 , G11B27/034 , H04N5/44513 , H04N5/781 , H04N5/85 , H04N21/4305 , H04N21/8549
摘要： A method includes receiving a command to provide media content configured to be sent to a display device for display at a particular scan rate. The media content includes audio data and video data. The method includes identifying high priority segments of the media content based on the audio data. The high priority segments are to be displayed by the display device at a presentation rate such that the high priority segments displayed at the presentation rate correspond to the media content displayed at the particular scan rate. The method also includes sending the high priority segments to the display device to provide video content and audio content of the requested media content for display.
摘要翻译：一种方法包括接收命令以提供配置成发送到显示设备以便以特定扫描速率显示的媒体内容。媒体内容包括音频数据和视频数据。该方法包括基于音频数据识别媒体内容的高优先级段。显示设备将以显示速率显示高优先级片段，使得以呈现速率显示的高优先级片段对应于以特定扫描速率显示的媒体内容。该方法还包括将高优先级段发送到显示设备以提供所请求的媒体内容的视频内容和音频内容以供显示。

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