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81. 发明公开

EP3729427A1 METHODS AND APPARATUS FOR UNIFIED SPEECH AND AUDIO DECODING QMF BASED HARMONIC TRANSPOSER IMPROVEMENTS 审中-实审转让
公开(公告)号：EP3729427A1
公开(公告)日：2020-10-28
申请号：EP18826012.9
申请日：2018-12-19
申请人： Dolby International AB
发明人： KUMAR, Rajat , KATURI, Ramesh , SATHUVALLI, Saketh , RAI, Reshma
IPC分类号： G10L21/0388

82. 发明公开

EP3649643A1 NORMALIZATION OF HIGH BAND SIGNALS IN NETWORK TELEPHONY COMMUNICATIONS 审中-公开
公开(公告)号：EP3649643A1
公开(公告)日：2020-05-13
申请号：EP18733488.3
申请日：2018-06-05
申请人： Microsoft Technology Licensing, LLC
发明人： SØRENSEN, Karsten Vandborg , SRINIVASAN, Sriram , VOS, Koen Bernard
IPC分类号： G10L21/0388 , G10L19/04 , G10L21/02

83. 发明授权

EP2830062B1 METHOD AND APPARATUS FOR HIGH-FREQUENCY ENCODING/DECODING FOR BANDWIDTH EXTENSION 有权
公开(公告)号：EP2830062B1
公开(公告)日：2019-11-20
申请号：EP13763979.5
申请日：2013-03-21
申请人： Samsung Electronics Co., Ltd.
发明人： CHOO, Ki-hyun
IPC分类号： G10L19/18 , G10L21/038 , G10L19/22 , G10L19/08 , G10L21/0388 , G10L19/02 , G10L19/20

84. 发明授权

EP3330965B1 SIGNAL PROCESSING APPARATUS AND METHOD 有权
公开(公告)号：EP3330965B1
公开(公告)日：2019-11-06
申请号：EP17210387.1
申请日：2011-04-11
申请人： Sony Corporation
发明人： YAMAMOTO, Yuki , CHINEN, Toru , HONMA, Hiroyuki , MITSUFUJI, Yuhki
IPC分类号： G10L19/16 , G10L21/0388 , G10L19/02

85. 发明授权

EP2620941B1 Cross product enhanced harmonic transposition 有权转让
公开(公告)号：EP2620941B1
公开(公告)日：2019-05-01
申请号：EP13164569.9
申请日：2010-01-15
申请人： Dolby International AB
发明人： Villemoes, Lars , Hedelin, Per
IPC分类号： G10L21/0388 , G10L25/90

86. 发明授权

EP3288033B1 METHODS AND SYSTEMS FOR EFFICIENT RECOVERY OF HIGH FREQUENCY AUDIO CONTENT 有权转让
公开(公告)号：EP3288033B1
公开(公告)日：2019-04-10
申请号：EP17190541.7
申请日：2013-02-22
申请人： Dolby International AB
发明人： THESING, Robin , SCHUG, Michael
IPC分类号： G10L21/0388 , G10L19/028 , G10L19/008 , G10L19/16 , G10L19/02

87. 发明授权

EP3166107B1 AUDIO SIGNAL PROCESSING DEVICE AND METHOD 有权
公开(公告)号：EP3166107B1
公开(公告)日：2018-12-12
申请号：EP15814179.6
申请日：2015-06-22
申请人： Clarion Co., Ltd.
发明人： HASHIMOTO, Takeshi , WATANABE, Tetsuo , FUJITA, Yasuhiro , FUKUE, Kazutomo , KUMAGAI, Takatomi
IPC分类号： G10L21/0388 , G10L21/0232
CPC分类号： G10L21/0332 , G10L21/0232 , G10L21/0388
摘要： There is provided a signal processing device, comprising: a frequency detecting means that detects a frequency satisfying a predetermined condition from an audio signal; an offset means that gives an offset to the detected frequency by the frequency detecting means in accordance with a frequency property at the detected frequency or around the detected frequency; a reference signal generating means that generates a reference signal by extracting a signal from the audio signal based on the detected frequency offset by the offset means; an interpolation signal generating means that generates an interpolation signal based on the generated reference signal; and a signal synthesizing means that performs high band interpolation by synthesizing the generated interpolation signal and the audio signal.

88. 发明授权

EP2360688B1 APPARATUS, METHOD AND PROGRAM FOR AUDIO SIGNAL PROCESSING 有权转让
公开(公告)号：EP2360688B1
公开(公告)日：2018-12-05
申请号：EP10824645.5
申请日：2010-10-19
申请人： Panasonic Intellectual Property Corporation of America
发明人： ISHIKAWA, Tomokazu , NORIMATSU, Takeshi , CHONG, Kok Seng , ZHOU, Huan , ZHONG, Haishan
IPC分类号： G10L21/04 , G10L19/02 , G10L21/0388
CPC分类号： G10L21/04 , G10L21/0388
摘要： To provide an audio signal processing apparatus which can perform, with low operation amount, audio signal processing that is either time stretch and/or compression processing or frequency modulation processing. The audio signal processing apparatus is intended to transform an input audio signal sequence using a predetermined adjustment factor. The audio signal processing apparatus includes a filter bank (2601) which transforms the input audio signal sequence into Quadrature Mirror Filter (QMF) coefficients using a filter for Quadrature Mirror Filter analysis (a QMF analysis filter) and an adjusting unit (2602) which adjusts the QMF coefficients based on a predetermined adjustment factor.

89. 发明公开

EP3321931A1 ENCODING APPARATUS AND ENCODING METHOD 有权
标题翻译：编码装置和编码方法
公开(公告)号：EP3321931A1
公开(公告)日：2018-05-16
申请号：EP17209671.1
申请日：2012-10-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： KAWASHIMA, Takuya , OSHIKIRI, Masahiro
IPC分类号： G10L19/02 , H03M7/30 , G10L21/0388
CPC分类号： G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L21/0388 , G10L25/06 , H05K999/99
摘要： Provided is an encoding apparatus. A threshold value calculating unit (32) calculates a threshold value from a statistical amount of conversion factors of an extended band. A representative conversion factor extracting unit (33) uses the calculated threshold value to extract conversion factors having large amplitudes. If the number of extracted conversion factors does not reach a specified number, the threshold value calculating unit (32) determines, in accordance with a lacking number of conversion factors, an amount by which the threshold value should be lowered, and modifies the threshold value accordingly. The representative conversion factor extracting unit (33) uses the threshold value, which has been modified, to extract conversion factors. Such threshold value modification by the threshold value difference calculating unit (32) and such conversion factor extraction by the representative conversion factor extracting unit (33) are repeated until the number of extracted conversion factors reaches the specified number.
摘要翻译：提供了一种编码设备。阈值计算单元（32）根据扩展频带的统计量的转换因子来计算阈值。代表性转换因子提取单元（33）使用所计算的阈值来提取具有大振幅的转换因子。如果所提取的转换因子的数量未达到指定数量，则阈值计算单元（32）根据缺少的转换因子数量来确定阈值应该被降低的量，并且修改阈值因此。代表性转换系数提取单元（33）使用已经被修改的阈值来提取转换系数。重复由阈值差异计算单元（32）进行的这种阈值修改和由代表性转换因子提取单元（33）提取的这种转换因子，直到提取的转换因子的数量达到指定数量。

90. 发明公开

EP3291232A1 SPECTRUM FLATNESS CONTROL FOR BANDWIDTH EXTENSION 审中-公开
标题翻译：带宽扩展的频谱平坦控制
公开(公告)号：EP3291232A1
公开(公告)日：2018-03-07
申请号：EP17189310.0
申请日：2011-07-19
申请人： Huawei Technologies Co., Ltd.
发明人： GAO, Yang
IPC分类号： G10L21/0388 , G10L19/26 , G10L19/24 , G10L25/18
CPC分类号： G10L19/002 , G10L19/022 , G10L19/24 , G10L19/26 , G10L21/038 , G10L21/0388 , G10L25/18
摘要： In accordance with an embodiment, a method of decoding an encoded audio bitstream at a decoder includes receiving the audio bitstream, decoding a low band bitstream (207) of the audio bitstream to get low band coefficients (209) in a frequency domain, and copying a plurality of the low band coefficients to a high frequency band location to generate high band coefficients (213). The method further includes processing the high band coefficients (213) to form processed high band coefficients (214). Processing includes modifying an energy envelope of the high band coefficients (213) by multiplying modification gains to flatten or smooth the high band coefficients (213), and applying a received spectral envelope decoded from the received audio bitstream to the high band coefficients (213). The low band coefficients (209) and the processed high band coefficients (214) are then inverse-transformed to the time domain to obtain a time domain output signal (215).
摘要翻译：根据一个实施例，一种在解码器处解码经编码的音频比特流的方法包括：接收音频比特流;解码音频比特流的低带比特流（207）以获得频域中的低带系数（209）;以及复制将多个低频带系数分配到高频带位置以生成高频带系数（213）。该方法还包括处理高频带系数（213）以形成经处理的高频带系数（214）。处理包括通过将修改增益相乘以平坦化或平滑高频带系数（213）来修改高频带系数（213）的能量包络，并且将从接收到的音频位流解码的接收频谱包络应用于高频带系数（213）。然后将低频带系数（209）和经处理的高频带系数（214）逆变换到时域以获得时域输出信号（215）。

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