专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 发明申请

WO2010006717A1 AUDIO ENCODING/DECODING SCHEME HAVING A SWITCHABLE BYPASS 审中-公开
标题翻译：具有可切换旁路的音频编码/解码方案
公开(公告)号：WO2010006717A1
公开(公告)日：2010-01-21
申请号：PCT/EP2009/004875
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
发明人： GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An apparatus for encoding comprises a first domain Converter (510), a switchable bypass (50), a second domain Converter (410), a first processor (420) and a second processor (520) to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain Converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译：一种用于编码的装置，包括第一域转换器（510），可切换旁路（50），第二域转换器（410），第一处理器（420）和第二处理器（520），以获得具有不同信号的编码音频信号由不同域中的编码数据表示的部分，其已经由不同的编码算法编码。解码器中的对应的解码级以及绕过域转换器的旁路允许产生具有高质量和低比特率的解码音频信号。

3. 发明申请

WO2010003254A1 MULTI-REFERENCE LPC FILTER QUANTIZATION AND INVERSE QUANTIZATION DEVICE AND METHOD 审中-公开
标题翻译：多参考LPC滤波器定量和反相量化设备及方法
公开(公告)号：WO2010003254A1
公开(公告)日：2010-01-14
申请号：PCT/CA2009/000981
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 multi-reference quantization device and method for quantizing an input LPC filter, comprises a plurality of differential quantizers using respective, different references, and a selector of a reference amongst the different references of the differential quantizers using a reference selection criterion. The input LPC filter is differentially quantized by the differential quantizer using the selected reference. A device and method for inverse quantizing a multi-reference differentially quantized LPC filter extracted from a bitstream, comprises an extractor from the bitstream of information about a reference amongst a plurality of possible references used for quantizing the multi-reference differentially quantized LPC filter, and a differential inverse quantizer using the reference corresponding to the extracted reference information to inverse quantize the multi-reference differentially quantized LPC filter.
摘要翻译：用于量化输入LPC滤波器的多参考量化装置和方法包括使用各自不同参考的多个差分量化器和使用参考选择准则的差分量化器的不同参考中的参考选择器。输入LPC滤波器通过使用所选参考的差分量化器进行差分量化。一种用于对从比特流提取的多参考差分量化LPC滤波器进行逆量化的装置和方法，包括来自比特流的提取器，该信息涉及用于量化多参考差分量化LPC滤波器的多个可能参考中的参考，以及使用对应于所提取的参考信息的参考来对多参考差分量化LPC滤波器进行逆量化的差分逆量化器。

4. 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。

5. 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.

6. 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。

7. 发明申请

WO2008151410A1 DEVICE AND METHOD FOR NOISE SHAPING IN A MULTILAYER EMBEDDED CODEC INTEROPERABLE WITH THE ITU-T G.711 STANDARD 审中-公开
标题翻译：与ITU-T G.711标准相互配合的多层嵌入式编解码器中的噪声形成装置和方法
公开(公告)号：WO2008151410A1
公开(公告)日：2008-12-18
申请号：PCT/CA2007/002373
申请日：2007-12-28
申请人： VOICEAGE CORPORATION , BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
发明人： BESSETTE, Bruno , LAPIERRE, Jimmy , MALENOVSKY, Vladimir , LEFEBVRE, Roch , SALAMI, Redwan
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/26 , G10L19/005 , G10L19/24 , G10L25/93
摘要： A device and method for shaping noise during encoding of an input sound signal comprise pre-emphasizing the input signal or a decoded signal from a given sound signal codec to produce a pre-emphasized signal, computing a filter transfer function based on the pre-emphasized signal, and shaping the noise by filtering the noise through the transfer function to produce a shaped noise signal, wherein the noise shaping comprises producing a noise feedback. A device and method for noise shaping in a multilayer codec, including at least Layer 1 and 2, comprise: at an encoder, producing an encoded sound signal in Layer 1 including Layer 1 noise shaping, and producing a Layer 2 enhancement signal; at a decoder, decoding the Layer 1 encoded sound signal to produce a synthesis signal, decoding the enhancement signal, computing a filter transfer function based on the synthesis signal, filtering the enhancement signal through the transfer function to produce a Layer 2 filtered enhancement signal, and adding the filtered enhancement signal to the synthesis signal to produce an output signal including contributions from Layer 1 and 2.
摘要翻译：用于在编码输入声音信号期间整形噪声的装置和方法包括预先强调来自给定声音信号编解码器的输入信号或解码信号以产生预加重信号，基于预先强调的信号计算滤波器传递函数信号和整形噪声，通过传递函数对噪声进行滤波以产生成形噪声信号，其中噪声整形包括产生噪声反馈。包括至少第1层和第2层的多层编解码器中的噪声整形的装置和方法包括：在编码器处，产生包括层1噪声整形的层1中的编码声音信号，并产生第2层增强信号; 在解码器处，解码第1层编码声音信号以产生合成信号，对增强信号进行解码，基于合成信号计算滤波器传递函数，通过传递函数对增强信号进行滤波，以产生第2层滤波的增强信号，并将经滤波的增强信号加到合成信号上以产生包括来自层1和2的贡献的输出信号。

8. 发明申请

WO2010040522A3 MULTI-RESOLUTION SWITCHED AUDIO ENCODING/DECODING SCHEME 审中-公开
公开(公告)号：WO2010040522A3
公开(公告)日：2010-04-15
申请号：PCT/EP2009/007205
申请日：2009-10-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V. , VOICEAGE CORPORATION , NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
发明人： NEUENDORF, Max , BAYER, Stefan , LECOMTE, Jérémie , FUCHS, Guillaume , ROBILLIARD, JuIien , RETTELBACH, Nikolaus , NAGEL, Frederik , GEIGER, RaIf , MULTRUS, Markus , GRILL, Bernhard , GOURNAY, Philippe , SALAMI, Redwan
IPC分类号： G01L19/02 , G10L19/14
摘要： An audio encoder for encoding an audio signal comprises a first coding branch (400), the first coding branch comprising a first converter (410) for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder comprises a second coding branch (500) comprising a second time/frequency converter (523). Additionally, a signal analyzer (300/525) for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters (410, 523) when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.

9. 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。

10. 发明申请

WO2007124582A1 METHOD FOR THE TIME SCALING OF AN AUDIO SIGNAL 审中-公开
标题翻译：音频信号时间缩放的方法
公开(公告)号：WO2007124582A1
公开(公告)日：2007-11-08
申请号：PCT/CA2007/000722
申请日：2007-04-27
申请人： TECHNOLOGIES HUMANWARE CANADA INC. , GOURNAY, Philippe , LAFLAMME, Claude , SALAMI, Redwan
发明人： GOURNAY, Philippe , LAFLAMME, Claude , SALAMI, Redwan
IPC分类号： G10L21/04 , G10L11/04 , G10L11/06 , G10L13/00
CPC分类号： G10L21/04
摘要： A method for the time scaling of a sampled audio signal is presented. The method includes a first step of performing a pitch and voicing analysis of each frame of the signal in order to determine if a given frame is voiced or unvoiced and to evaluate a pitch profile for voiced frames. The results of this analysis are used to determine the length and position of analysis windows along each frame. Once an analysis window is determined, it is overlap-added to previously synthesized windows of the output signal.
摘要翻译：提出了一种用于采样音频信号的时间缩放的方法。该方法包括对信号的每个帧执行音调和语音分析以便确定给定帧是有声还是无声并且评估浊音帧的音调简档的第一步骤。该分析的结果用于确定每个框架分析窗口的长度和位置。一旦确定了分析窗口，就将其与先前合成的输出信号窗口重叠。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式