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91. 发明申请

US20150066491A1 TIME WARP ACTIVATION SIGNAL PROVIDER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING A TIME WARP ACTIVATION SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAMS 有权
公开(公告)号：US20150066491A1
公开(公告)日：2015-03-05
申请号：US14538741
申请日：2014-11-11
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Stefan BAYER , Sascha DISCH , Ralf GEIGER , Guillaume FUCHS , Max NEUENDORF , Gerald SCHULLER , Bernd EDLER
IPC分类号： G10L19/028 , G10L21/043 , G10L19/002 , G10L25/90
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.

92. 发明申请

US20150066490A1 TIME WARP ACTIVATION SIGNAL PROVIDER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING A TIME WARP ACTIVATION SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAMS 有权
公开(公告)号：US20150066490A1
公开(公告)日：2015-03-05
申请号：US14538756
申请日：2014-11-11
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Stefan BAYER , Sascha DISCH , Ralf GEIGER , Guillaume FUCHS , Max NEUENDORF , Gerald SCHULLER , Bernd EDLER
IPC分类号： G10L19/028 , G10L21/043
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.

93. 发明授权

US08892429B2 Encoding device and encoding method, decoding device and decoding method, and program 有权
标题翻译：编码装置和编码方法，解码装置及解码方法及程序
公开(公告)号：US08892429B2
公开(公告)日：2014-11-18
申请号：US13583994
申请日：2011-03-08
申请人： Shiro Suzuki , Yuuki Matsumura , Yasuhiro Toguri , Yuuji Maeda
发明人： Shiro Suzuki , Yuuki Matsumura , Yasuhiro Toguri , Yuuji Maeda
IPC分类号： G10L19/02 , G10L19/035
CPC分类号： G10L19/035 , G10L19/0212
摘要： The present invention relates to an encoding device and an encoding method, a decoding device and a decoding method, and a program that reduce deterioration of sound quality due to encoding of audio signals.An envelope emphasis part (51) emphasizes an envelope (ENV). A noise shaping part (52) divides an emphasized envelope (D) formed by emphasis of the envelope (ENV) by a value larger than 1, and subtracts noise shaping (G) specified by information (NS) from a result of the division. A quantization part (14) sets a result of the subtraction as a quantization bit count (WL), and quantizes a normalized spectrum (S1) formed by normalization of a spectrum (S0) based on the quantization bit count (WL). A multiplexing part (53) multiplexes the information (NS), a quantized spectrum (QS) formed by quantization of the normalized spectrum (S1), and the envelope (ENV). The present invention can be applied to an encoding device encoding audio signals, for example.
摘要翻译：编码装置和编码方法，解码装置和解码方法技术领域本发明涉及一种减少音频信号编码导致的音质劣化的程序。信封重点部分（51）强调信封（ENV）。噪声整形部分（52）将由包络（ENV）的强调形成的强调包络（D）除以大于1的值，并从分割结果中减去由信息（NS）指定的噪声整形（G）。量化部分（14）将减法的结果设置为量化位计数（WL），并且通过基于量化位计数（WL）对通过频谱归一化形成的归一化频谱（S1）进行量化。复用部分（53）复用信息（NS），通过归一化频谱（S1）的量化形成的量化频谱（QS）和信封（ENV）。例如，本发明可以应用于编码音频信号的编码装置。

94. 发明申请

US20140324417A1 METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO SIGNAL USING LAYERED SINUSOIDAL PULSE CODING 审中-公开
标题翻译：使用层状SINUSOIDAL脉冲编码来编码和解码音频信号的方法和装置
公开(公告)号：US20140324417A1
公开(公告)日：2014-10-30
申请号：US14325475
申请日：2014-07-08
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Mi-Suk LEE , Heesik YANG , Hyun-Woo KIM , Jongmo SUNG , Hyun-Joo BAE , Byung-Sun LEE
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , G10L19/0212 , G10L19/24
摘要： Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.
摘要翻译：提供了一种用于对音频信号进行编码和解码的方法和装置。一种对音频信号进行编码的方法包括接收经变换的音频信号，将变换的音频信号分成多个子带，对子带执行第一正弦脉冲编码操作，确定子带中的第二正弦脉冲编码操作的性能区域基于第一正弦脉冲编码操作的编码信息，并对所确定的执行区域执行第二正弦脉冲编码操作，其中根据编码信息可变地执行第一正弦脉冲编码操作。因此，通过考虑在通过分层正弦脉冲编码方案对上层中的音频信号进行编码或解码时下层的正弦脉冲编码，可以进一步提高合成信号的质量。

95. 发明授权

US08874449B2 Method and apparatus for downmixing multi-channel audio signals 有权
标题翻译：用于降低多声道音频信号的方法和装置
公开(公告)号：US08874449B2
公开(公告)日：2014-10-28
申请号：US13272632
申请日：2011-10-13
申请人： Chang-joon Lee
发明人： Chang-joon Lee
IPC分类号： G10L19/00 , G10L19/008 , G10L19/02 , G10L25/18 , G10L19/022
CPC分类号： G10L19/008 , G10L19/0212 , G10L19/022 , G10L25/18 , H04S2400/03
摘要： Downmixing multi-channel audio signals to target channels by pre-downmixing frequency coefficients that are encoded using a most frequently used block type in stereo channels in the frequency domain, thereby reducing an amount of calculations and an amount of power required to downmix the multi-channel audio signals.
摘要翻译：通过使用在频域中的立体声通道中使用最频繁使用的块类型进行编码的频率系数，将多声道音频信号下混混入目标频道，从而减少了多频道音频信号的下降，频道音频信号。

96. 发明申请

US20140297706A1 ORTHOGONAL TRANSFORM APPARATUS, ORTHOGONAL TRANSFORM METHOD, ORTHOGONAL TRANSFORM COMPUTER PROGRAM, AND AUDIO DECODING APPARATUS 有权
标题翻译：正交变换装置，正交变换方法，正交变换计算机程序和音频解码装置
公开(公告)号：US20140297706A1
公开(公告)日：2014-10-02
申请号：US14229150
申请日：2014-03-28
申请人： FUJITSU LIMITED
发明人： Yohei KISHI , Akira KAMANO , Shunsuke TAKEUCHI , Takeshi OTANI
IPC分类号： G06F17/14
CPC分类号： G06F17/147 , G10L19/0212 , H03H17/0272 , H04N19/60 , H04N19/625 , H04N19/635
摘要： An orthogonal transform apparatus includes: an interchanging unit which interchanges MDCT coefficients contained in a first half of a prescribed interval with MDCT coefficients contained in a second half thereof; an inverting unit which inverts the sign of the MDCT coefficients contained in the second half of the prescribed interval after the interchange; an inverse cosine transform unit which computes the real components of QMF coefficients by applying an IMDCT using FFT to the MDCT coefficients contained in the first half and the sign-inverted MDCT coefficients contained in the second half; an inverse sine transform unit which computes the imaginary components of the QMF coefficients by applying an IMDST using FFT to the MDCT coefficients contained in the first half and the sign-inverted MDCT coefficients contained in the second half; and a coefficient adjusting unit which computes the QMF coefficients by combining the real components with the imaginary components.
摘要翻译：正交变换装置包括：交换单元，其将包含在规定间隔的前半部分中的MDCT系数与包含在其后半部的MDCT系数相互交换; 反转单元，其在交换之后反转包含在规定间隔的后半部分中的MDCT系数的符号; 逆余弦变换单元，其通过使用FFT对包含在前半部分的MDCT系数和后半部分中包含的符号反转MDCT系数应用IMDCT来计算QMF系数的实部分量; 逆正弦变换单元，其通过使用FFT对包含在前半部的MDCT系数和包含在后半部的符号反转的MDCT系数应用IMDST来计算QMF系数的虚分量; 以及系数调整单元，其通过将实数分量与虚分量组合来计算QMF系数。

97. 发明授权

US08847795B2 Delay-optimized overlap transform, coding/decoding weighting windows 有权
标题翻译：延迟优化重叠变换，编码/解码加权窗口
公开(公告)号：US08847795B2
公开(公告)日：2014-09-30
申请号：US14128718
申请日：2012-06-26
申请人： Julien Faure , Pierrick Philippe
发明人： Julien Faure , Pierrick Philippe
IPC分类号： H03M7/00 , G10L19/02 , H04L27/26 , H03M7/30 , G10L19/12 , G10L19/022 , H03M7/46 , G10L19/008
CPC分类号： H03M7/00 , G10L19/008 , G10L19/0212 , G10L19/022 , G10L19/12 , H03M7/30 , H03M7/46 , H04L27/26
摘要： Coding/decoding of a digital signal, consisting of successive blocks of samples, the coding being of the transform with overlap type and comprising, upon analysis, the application of a weighting window to two blocks of M successive samples. In particular, this weighting window is asymmetric and comprises four distinct portions extending successively over the two aforesaid blocks, with: a first portion, increasing over a first interval of samples, a second portion, constant at a value of 1 over a second interval, a third portion, decreasing over a third interval, and a fourth portion, constant at a value of 0 over a fourth interval.
摘要翻译：由连续的样本块组成的数字信号的编码/解码，编码是具有重叠类型的变换，并且在分析时包括将加权窗口应用于M个连续采样的两个块。特别地，该加权窗口是不对称的，并且包括在两个上述块上连续延伸的四个不同部分，其中：第一部分，在第一采样间隔上增加第二部分，在第二间隔上恒定为值1，第三部分，在第三间隔上减小，第四部分在第四个间隔内以0值恒定。

98. 发明申请

US20140257825A1 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：US20140257825A1
公开(公告)日：2014-09-11
申请号：US14350403
申请日：2012-10-12
申请人： PANASONIC CORPORATION
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L19/02
CPC分类号： G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L21/0388 , G10L25/06
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：提供了一种编码装置。阈值计算单元（32）根据扩展频带的转换因子的统计量来计算阈值。代表转换因子提取单元（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）根据缺少转换因子的数量确定阈值应降低的量，并且修改阈值相应地。代表变换因子提取单元（33）使用已被修改的阈值来提取转换因子。重复由阈值差计算部（32）进行的阈值修正和代表变换因子提取部（33）的转换因子提取，直到所提取的转换因子的数量达到规定数。

99. 发明授权

US08831959B2 Transform audio codec and methods for encoding and decoding a time segment of an audio signal 有权
标题翻译：转换音频编解码器和用于对音频信号的时间段进行编码和解码的方法
公开(公告)号：US08831959B2
公开(公告)日：2014-09-09
申请号：US13183950
申请日：2011-07-15
申请人： Volodya Grancharov , Sigurdur Sverrisson
发明人： Volodya Grancharov , Sigurdur Sverrisson
IPC分类号： G10L19/00 , H03M5/00 , G10L19/12 , G01L19/02
CPC分类号： G01L19/02 , G10L19/02 , G10L19/0212 , G10L19/032
摘要： Methods and devices for efficient encoding/decoding of a time segment of an audio signal. Methods comprise deriving an indicator, z, of the position in a frequency scale of a residual vector associated with the time segment of the audio signal, and deriving a measure, Φ, related to the amount of structure of the residual vector. The methods further comprise determining whether a predefined criterion involving the measure Φ, the indicator z and a predefined threshold Θ, is fulfilled, which corresponds to estimating whether a change of sign of at least some of the non-zero coefficients of the residual vector would be audible after reconstruction of the audio signal time segment. The amplitude of the coefficients of the residual vector is encoded, and the signs of the coefficients of the residual vector are encoded only when it is determined that the criterion is fulfilled, and thus that a change of sign would be audible.
摘要翻译：用于对音频信号的时间段进行有效编码/解码的方法和装置。方法包括导出与音频信号的时间段相关联的残差矢量的频率范围中的位置的指示符，以及导出与残差向量的结构量有关的测量值Φ。所述方法还包括确定是否满足涉及测量Φ，指示符z和预定义阈值Θ的预定准则，其对应于估计残差向量中的至少一些非零系数的符号变化是否将在音频信号时间段重建后可听见。对残差向量的系数的幅度进行编码，并且仅当确定标准满足时才对编码残差矢量的系数的符号进行编码，从而可以听到符号变化。

100. 发明授权

US08805681B2 Method and apparatus to search fixed codebook using tracks of a trellis structure with each track being a union of tracks of an algebraic codebook 有权
标题翻译：使用网格结构的轨道来搜索固定码本的方法和装置，每个轨道是代数码本的轨道的并集
公开(公告)号：US08805681B2
公开(公告)日：2014-08-12
申请号：US14020139
申请日：2013-09-06
申请人： Samsung Electronics Co., Ltd.
发明人： Hosang Sung , Kangeun Lee , Sang-won Kang , Thomas R. Fischer , Ja-kyoung Jun
IPC分类号： G10L21/00 , G10L19/12 , G10L19/02
CPC分类号： G10L19/0212 , G10L15/08 , G10L19/10 , G10L19/107 , G10L19/12 , G10L2019/0013
摘要： A method and apparatus to search a codebook including pulses that model a predetermined component of a speech signal. The method includes the operations of selecting a predetermined number of paths corresponding to a predetermined number of pulse locations that are most consistent with the predetermined component, from among paths corresponding to pulse locations of a predetermined pulse location set allocated to at least one branch that connects one state of a predetermined Trellis structure to another state, performing the path selecting operation on each of states other than the one state, and selecting a path corresponding to pulse locations that are most consistent with the predetermined component, from among paths including the selected paths, wherein each path corresponds to a union of plural tracks of an Algebraic codebook. Accordingly, the number of calculations required during a codebook search is reduced.
摘要翻译：一种搜索包括对语音信号的预定分量进行建模的脉冲的码本的方法和装置。该方法包括从对应于分配给连接至少一个分支的预定脉冲位置集的脉冲位置的路径中选择对应于与预定分量最一致的预定数量的脉冲位置的预定数量的路径的操作将预定网格结构的一个状态转换到另一状态，对除了一个状态以外的状态执行路径选择操作，并且从包括所选择的路径的路径中选择对应于与预定分量最一致的脉冲位置的路径，其中每个路径对应于代数码本的多个轨道的并集。因此，减少码本搜索期间所需的计算次数。

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