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1. 发明申请

WO2010003253A1 VARIABLE BIT RATE LPC FILTER QUANTIZING AND INVERSE QUANTIZING DEVICE AND METHOD 审中-公开
标题翻译：可变位速率LPC滤波器量子和反相量化器件及方法
公开(公告)号：WO2010003253A1
公开(公告)日：2010-01-14
申请号：PCT/CA2009000980
申请日：2009-07-10
申请人： VOICEAGE CORP , BESSETTE BRUNO , GOURNAY PHILIPPE , SALAMI REDWAN
发明人： BESSETTE BRUNO , GOURNAY PHILIPPE , SALAMI REDWAN
IPC分类号： G10L19/12
CPC分类号： G10L19/06 , G10L19/18 , H03M7/3082
摘要： A device and a method for quantizing a LPC filter in the form of an input vector in a quantization domain, comprises a calculator of a first-stage approximation of the input vector, a subtractor of the first-stage approximation from the input vector to produce a residual vector, a calculator of a weighting function from the first-stage approximation, a warper of the residual vector with the weighting function, and a quantizer of the weighted residual vector to supply a quantized weighted residual vector. A device and a method for inverse quantizing of a LPC filter, comprises means for receiving coded indices representative of a first-stage approximation of a vector representative of the LPC filter in a quantization domain and of a quantized weighted residual version of the vector, a calculator of an inverse weighting function from the first-stage approximation, an inverse quantizer of the quantized weighted residual version of the vector to produce a weighted residual vector, a multiplier of the weighted residual vector by the inverse weighting function to produce a residual vector, and an adder of the first-stage approximation with the residual vector to produce the vector representative of the LPC filter in the quantization domain.
摘要翻译：在量化域中以输入向量的形式对LPC滤波器进行量化的装置和方法包括：输入向量的第一级逼近的计算器，从输入向量产生的第一级逼近的减法器一个残差矢量，一个来自第一阶段逼近的加权函数的计算器，具有加权函数的残差向量的整经器，以及加权残差向量的量化器，以提供量化的加权残差向量。用于LPC滤波器的逆量化的装置和方法包括用于接收代表代表量化域中的LPC滤波器的矢量的第一级逼近的编码索引和矢量的量化加权残差版本的装置，来自第一阶段近似的逆加权函数的计算器，用于产生加权残差向量的向量的量化加权残差版本的逆量化器，通过逆加权函数的加权残差向量的乘数以产生残差向量，以及具有残差矢量的第一级近似的加法器，以产生代表量化域中的LPC滤波器的向量。

2. 发明申请

WO2010003564A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME HAVING CASCADED SWITCHES 审中-公开
标题翻译：低成本音频编码/解码方案具有CASCADED开关
公开(公告)号：WO2010003564A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004652
申请日：2009-06-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V , VOICEAGE CORPORATION , GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
发明人： GRILL, Bernhard , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , GOURNAY, Philippe , SALAMI, Redwan , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus
IPC分类号： G10L19/14
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要： An audio encoder comprises a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch comprises a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and wherein the second encoding branch furthermore comprises a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder comprises a first domain decoder such as a spectral domain decoding branch, a second domain decoder such as an LPC domain decoding branch for decoding a signal such as an excitation signal in the second domain, and a third domain decoder such as an LPC-spectral decoder branch and two cascaded switches for switching between the decoders.
摘要翻译：音频编码器包括第一信息宿定向编码分支，诸如频域编码分支，第二信息源或SNR定向编码分支，诸如LPC域编码分支，以及用于在第一编码分支与第二编码分支之间进行切换的开关编码分支，其中所述第二编码分支包括转换器到不同于所述频域的特定域，例如产生激励信号的LPC分析阶段，并且其中所述第二编码分支还包括特定域编码分支，诸如LPC域处理分支，以及诸如LPC频域处理分支的特定频域编码分支，以及用于在特定编码分支和特定频域编码分支之间切换的附加开关。音频解码器包括诸如频域解码分支的第一域解码器，诸如LPC域解码分支的第二域解码器，用于对诸如第二域中的激励信号的信号进行解码，以及第三域解码器，诸如LPC 光谱解码器分支和两个级联开关，用于在解码器之间切换。

3. 发明申请

WO2007045971A3 METHOD AND APPARATUS FOR RESYNCHRONIZING PACKETIZED AUDIO STREAMS 审中-公开
标题翻译：用于重新安装封装音频流的方法和装置
公开(公告)号：WO2007045971A3
公开(公告)日：2007-07-26
申请号：PCT/IB2006002915
申请日：2006-10-18
申请人： NOKIA CORP , ANDERSON KYLE D , GOURNAY PHILIPPE
发明人： ANDERSON KYLE D , GOURNAY PHILIPPE
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L21/013
摘要： An approach is provided for maintaining natural pitch periodicity of the speech or audio signal when processing a late frame in a predictive decoder. Concealment is performed to replace a late frame. The late frame that includes audio information is detected. A pitch phase difference introduced by the concealment is determined. The pitch phase difference is compensated for before playing out a subsequent frame that follows the late frame.
摘要翻译：提供了一种用于在预测解码器中处理后期帧时保持语音或音频信号的自然音调周期性的方法。执行隐藏以取代后期帧。检测到包含音频信息的后期帧。确定由隐藏引入的音高相位差。在播放后帧后的后续帧时，补偿音调相位差。

4. 发明申请

WO2007045971A2 METHOD AND APPARATUS FOR RESYNCHRONIZING PACKETIZED AUDIO STREAMS 审中-公开
标题翻译：用于再同步化分组的音频流的方法和设备
公开(公告)号：WO2007045971A2
公开(公告)日：2007-04-26
申请号：PCT/IB2006/002915
申请日：2006-10-18
申请人： NOKIA CORPORATION , ANDERSON, Kyle, D. , GOURNAY, Philippe
发明人： ANDERSON, Kyle, D. , GOURNAY, Philippe
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L21/013
摘要： An approach is provided for maintaining natural pitch periodicity of the speech or audio signal when processing a late frame in a predictive decoder. Concealment is performed to replace a late frame. The late frame that includes audio information is detected. A pitch phase difference introduced by the concealment is determined. The pitch phase difference is compensated for before playing out a subsequent frame that follows the late frame.
摘要翻译：提供了一种用于在处理预测解码器中的晚帧时保持语音或音频信号的自然音调周期性的方法。执行隐藏以替换晚期帧。包括音频信息的迟帧被检测到。确定由隐藏引入的音调相位差。在播放后一帧之后的后续帧之前，音调相位差被补偿。

5. 发明申请

WO2006136901A3 SYSTEM AND METHOD FOR ADAPTIVE TRANSMISSION OF COMFORT NOISE PARAMETERS DURING DISCONTINUOUS SPEECH TRANSMISSION 审中-公开
标题翻译：在不连续语音传输期间适应传输舒适噪声参数的系统和方法
公开(公告)号：WO2006136901A3
公开(公告)日：2007-03-08
申请号：PCT/IB2006001604
申请日：2006-06-15
申请人： NOKIA CORP , GREER STEVEN CRAIG , GOURNAY PHILIPPE , JELINEK MILAN
发明人： GREER STEVEN CRAIG , GOURNAY PHILIPPE , JELINEK MILAN
IPC分类号： G10L19/00
CPC分类号： G10L19/012 , G10L19/24
摘要： Apparatus is provided that includes at least one entity for transmitting speech signals in a discontinuous transmission mode including transmitting speech frames interspersed with frames including comfort noise parameters during periods of speech pauses. The entit(ies) include a first entity for estimating a current noise value. In addition, the apparatus includes a second entity for selectively controlling a rate at which the frames including comfort noise parameters are transmitted during the periods of speech pauses based upon the estimated current noise value.
摘要翻译：提供了包括用于以不连续传输模式发送语音信号的至少一个实体的装置，包括在语音暂停期间包括散布有包括舒适噪声参数的帧的语音帧。该权限包括用于估计当前噪声值的第一实体。此外，该设备包括第二实体，用于根据估计的当前噪声值选择性地控制在语音暂停期间发送包括舒适噪声参数的帧的速率。

6. 发明申请

WO2011048117A1 AUDIO SIGNAL ENCODER, AUDIO SIGNAL DECODER, METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING AN ALIASING-CANCELLATION 审中-公开
标题翻译：音频信号编码器，音频信号解码器，使用消息取消来编码或解码音频信号的方法
公开(公告)号：WO2011048117A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065752
申请日：2010-10-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , KONINKLIJKE PHILIPS ELECTRONICS N.V. , DOLBY INTERNATIONAL AB , BESSETTE, Bruno , NEUENDORF, Max , GEIGER, Ralf , GOURNAY, Philippe , LEFEBVRE, Roch , GRILL, Bernhard , LECOMTE, Jeremie , BAYER, Stefan , RETTELBACH, Nikolaus , VILLEMOES, Lars , SALAMI, Redwan , BRINKER, Albertus C. den
发明人： BESSETTE, Bruno , NEUENDORF, Max , GEIGER, Ralf , GOURNAY, Philippe , LEFEBVRE, Roch , GRILL, Bernhard , LECOMTE, Jeremie , BAYER, Stefan , RETTELBACH, Nikolaus , VILLEMOES, Lars , SALAMI, Redwan , BRINKER, Albertus C. den
IPC分类号： G10L19/14 , G10L19/02
CPC分类号： G10L19/03 , G10L19/0212 , G10L19/20 , G10L2019/0008
摘要： An audio signal decoder (200) for providing a decoded representation (212) of an audio content on the basis of an encoded representation (310) of the audio content comprises a transform domain path (230, 240, 242, 250, 260) configured to obtain a time-domain representation (212) of a portion of the audio content encoded in a transform-domain mode on the basis of a first set (220) of spectral coefficients, a representation (224) of an aliasing-cancellation stimulus signal and a plurality of linear-prediction-domain parameters (222). The transform domain path comprises a spectrum processor (230) configured to apply a spectrum shaping to the first set of spectral coefficients in dependence on at least a subset of the linear-prediction-domain parameters, to obtain a spectrally-shaped version (232) of the first set of spectral coefficients. The transform domain path comprises a first frequency-domain-to-time-domain converter (240) configured to obtain a time-domain representation of the audio content on the basis of the spectrally-shaped version of the first set of spectral coefficients. The transform domain path comprises an aliasing-cancellation stimulus filter configured to filter (250) the aliasing-cancellation stimulus signal (324) in dependence on at least a subset of the linear-prediction-domain parameters (222), to derive an aliasing-cancellation synthesis signal (252) from the aliasing-cancellation stimulus signal. The transform domain path also comprises a combiner (260) configured to combine the time-domain representation (242) of the audio content with the aliasing-cancellation synthesis signal (252), or a post-processed version thereof, to obtain an aliasing reduced time-domain signal.
摘要翻译：用于基于音频内容的编码表示（310）提供音频内容的解码表示（212）的音频信号解码器（200）包括：配置的变换域路径（230,240,242,250,260）基于频谱系数的第一组（220）获得以变换域模式编码的音频内容的一部分的时域表示（212），混叠取消激励信号的表示（224）和多个线性预测域参数（222）。变换域路径包括频谱处理器（230），其被配置为根据线性预测域参数的至少一个子集对第一组频谱系数应用频谱整形，以获得频谱形状的版本（232）的第一组光谱系数。变换域路径包括被配置为基于第一组频谱系数的频谱形式的版本来获得音频内容的时域表示的第一频域 - 时域转换器（240）。变换域路径包括被设置为根据线性预测域参数（222）的至少一个子集过滤（250）混叠取消激励信号（324）的混叠消除刺激滤波器，以导出混叠消除刺激滤波器消除合成信号（252）。变换域路径还包括被配置为将音频内容的时域表示（242）与混叠消除合成信号（252）组合的组合器（260）或其后处理版本，以获得减少的混叠时域信号。

7. 发明申请

WO2010003253A8 VARIABLE BIT RATE LPC FILTER QUANTIZING AND INVERSE QUANTIZING DEVICE AND METHOD 审中-公开
公开(公告)号：WO2010003253A8
公开(公告)日：2010-01-14
申请号：PCT/CA2009/000980
申请日：2009-07-10
申请人： VOICEAGE CORPORATION , BESSETTE, Bruno , GOURNAY, Philippe , SALAMI, Redwan
发明人： BESSETTE, Bruno , GOURNAY, Philippe , SALAMI, Redwan
IPC分类号： G10L19/12
摘要： A device and a method for quantizing a LPC filter in the form of an input vector in a quantization domain, comprises a calculator of a first-stage approximation of the input vector, a subtractor of the first-stage approximation from the input vector to produce a residual vector, a calculator of a weighting function from the first-stage approximation, a warper of the residual vector with the weighting function, and a quantizer of the weighted residual vector to supply a quantized weighted residual vector. A device and a method for inverse quantizing of a LPC filter, comprises means for receiving coded indices representative of a first-stage approximation of a vector representative of the LPC filter in a quantization domain and of a quantized weighted residual version of the vector, a calculator of an inverse weighting function from the first-stage approximation, an inverse quantizer of the quantized weighted residual version of the vector to produce a weighted residual vector, a multiplier of the weighted residual vector by the inverse weighting function to produce a residual vector, and an adder of the first-stage approximation with the residual vector to produce the vector representative of the LPC filter in the quantization domain.

8. 发明申请

WO2010003252A1 DEVICE AND METHOD FOR QUANTIZING AND INVERSE QUANTIZING LPC FILTERS IN A SUPER-FRAME 审中-公开
标题翻译：在超帧中定量和反相定量LPC滤波器的装置和方法
公开(公告)号：WO2010003252A1
公开(公告)日：2010-01-14
申请号：PCT/CA2009/000979
申请日：2009-07-10
申请人： VOICEAGE CORPORATION , GOURNAY, Philippe , BESSETTE, Bruno , SALAMI, Redwan
发明人： GOURNAY, Philippe , BESSETTE, Bruno , SALAMI, Redwan
IPC分类号： G10L19/12
CPC分类号： G10L19/06 , G10L19/18 , H03M7/3082
摘要： A device and a method for quantizing, in a super-frame including a sequence of frames, LPC filters calculated during the frames of the sequence. The LPC filter quantizing device and method comprises: an absolute quantizer for first quantizing one of the LPC filters using absolute quantization; and at least one quantizer of the other LPC filters using a quantization mode selected from the group consisting of absolute quantization and differential quantization relative to at least one previously quantized filter amongst the LPC filters. For inverse quantizing, at least the first quantized LPC filter is received and an inverse quantizer inverse quantizes the first quantized LPC filter using absolute inverse quantization. If any quantized LPC filter other than the first quantized LPC filter is received, an inverse quantizer inverse quantizes this quantized LPC filter using one of absolute inverse quantization and differential inverse quantization relative to at least one previously received quantized LPC filter.
摘要翻译：一种用于在包括帧序列的超帧中量化在序列的帧期间计算的LPC滤波器的装置和方法。 LPC滤波器量化装置和方法包括：绝对量化器，用于使用绝对量化首先量化LPC滤波器之一; 以及使用从相对于LPC滤波器中的至少一个先前量化的滤波器的绝对量化和差分量化组成的组中选择的量化模式的其它LPC滤波器的至少一个量化器。对于逆量化，至少接收第一量化LPC滤波器，并且逆量化器使用绝对反量化对第一量化LPC滤波器进行逆量化。如果接收到除了第一量化LPC滤波器之外的任何量化的LPC滤波器，则逆量化器相对于至少一个先前接收的量化的LPC滤波器使用绝对反量子化和差分逆量化之一对该量化的LPC滤波器进行逆量化。

9. 发明申请

WO2007073604A8 METHOD AND DEVICE FOR EFFICIENT FRAME ERASURE CONCEALMENT IN SPEECH CODECS 审中-公开
标题翻译：方法和设备在语音编码中有效的帧消除隐藏
公开(公告)号：WO2007073604A8
公开(公告)日：2007-12-21
申请号：PCT/CA2006002146
申请日：2006-12-28
申请人： VOICEAGE CORP , VAILLANCOURT TOMMY , JELINEK MILAN , GOURNAY PHILIPPE , SALAMI REDWAN
发明人： VAILLANCOURT TOMMY , JELINEK MILAN , GOURNAY PHILIPPE , SALAMI REDWAN
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/005
摘要： A method and device for concealing frame erasures caused by frames of an encoded sound signal erased during transmission from an encoder to a decoder and for recovery of the decoder after frame erasures comprise, in the encoder, determining concealment/recovery parameters including at least phase information related to frames of the encoded sound signal. The concealment/recovery parameters determined in the encoder are transmitted to the decoder and, in the decoder, frame erasure concealment is conducted in response to the received concealment/recovery parameters. The frame erasure concealment comprises resynchronizing, in response to the received phase information, the erasure-concealed frames with corresponding frames of the sound signal encoded at the encoder. When no concealment/recovery parameters are transmitted to the decoder, a phase information of each frame of the encoded sound signal that has been erased during transmission from the encoder to the decoder is estimated in the decoder. Also, frame erasure concealment is conducted in the decoder in response to the estimated phase information, wherein the frame erasure concealment comprises resynchronizing, in response to the estimated phase information, each erasure-concealed frame with a corresponding frame of the sound signal encoded at the encoder.
摘要翻译：一种用于隐藏在从编码器到解码器的传输期间被擦除的编码声音信号的帧引起的帧擦除和在帧擦除之后恢复解码器的方法和装置，在编码器中包括确定包括至少相位信息的隐藏/恢复参数与编码的声音信号的帧相关。在编码器中确定的隐藏/恢复参数被发送到解码器，并且在解码器中，响应于接收的隐藏/恢复参数进行帧擦除隐藏。帧擦除隐藏包括响应于接收到的相位信息，重新同步擦除隐藏的帧与在编码器处编码的声音信号的相应帧。当没有隐藏/恢复参数被发送到解码器时，在解码器中估计在从编码器到解码器的传输期间被擦除的编码声音信号的每一帧的相位信息。此外，响应于估计的相位信息在解码器中进行帧擦除隐藏，其中帧擦除隐藏包括响应于估计的相位信息重新同步每个被擦除隐藏的帧与在该编码的声音信号的相应帧编码器。

10. 发明申请

WO2007073604A1 METHOD AND DEVICE FOR EFFICIENT FRAME ERASURE CONCEALMENT IN SPEECH CODECS 审中-公开
标题翻译：语音编解码器中有效帧擦除隐藏的方法和装置
公开(公告)号：WO2007073604A1
公开(公告)日：2007-07-05
申请号：PCT/CA2006/002146
申请日：2006-12-27
申请人： VOICEAGE CORPORATION , VAILLANCOURT, Tommy , JELINEK, Milan , GOURNAY, Philippe , SALAMI, Redwan
发明人： VAILLANCOURT, Tommy , JELINEK, Milan , GOURNAY, Philippe , SALAMI, Redwan
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/005
摘要： A method and device for concealing frame erasures caused by frames of an encoded sound signal erased during transmission from an encoder to a decoder and for recovery of the decoder after frame erasures comprise, in the encoder, determining concealment/recovery parameters including at least phase information related to frames of the encoded sound signal. The concealment/recovery parameters determined in the encoder are transmitted to the decoder and, in the decoder, frame erasure concealment is conducted in response to the received concealment/recovery parameters. The frame erasure concealment comprises resynchronizing, in response to the received phase information, the erasure-concealed frames with corresponding frames of the sound signal encoded at the encoder. When no concealment/recovery parameters are transmitted to the decoder, a phase information of each frame of the encoded sound signal that has been erased during transmission from the encoder to the decoder is estimated in the decoder. Also, frame erasure concealment is conducted in the decoder in response to the estimated phase information, wherein the frame erasure concealment comprises resynchronizing, in response to the estimated phase information, each erasure-concealed frame with a corresponding frame of the sound signal encoded at the encoder.
摘要翻译：一种用于隐藏由在从编码器到解码器的传输期间擦除的编码声音信号的帧引起的帧擦除以及在帧擦除之后恢复解码器的方法和设备包括在编码器中确定隐藏 /恢复参数至少包括与编码声音信号的帧有关的相位信息。在编码器中确定的隐藏/恢复参数被发送到解码器，并且在解码器中，响应于所接收的隐藏/恢复参数进行帧删除隐藏。帧擦除隐藏包括响应于接收到的相位信息而将隐藏了擦除的帧与在编码器处编码的声音信号的对应帧再同步。当没有隐藏/恢复参数被发送到解码器时，在解码器中估计在从编码器到解码器的传输期间已被擦除的编码声音信号的每帧的相位信息。另外，响应于估计的相位信息，在解码器中进行帧擦除隐藏，其中帧擦除隐藏包括响应于估计的相位信息，将每个擦除隐藏帧与在该帧中编码的声音信号的对应帧重新同步编码器。

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