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1. 发明授权

US08645146B2 Bitstream syntax for multi-process audio decoding 有权
标题翻译：多进程音频解码的比特流语法
公开(公告)号：US08645146B2
公开(公告)日：2014-02-04
申请号：US13595939
申请日：2012-08-27
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

2. 发明申请

US20120323584A1 BITSTREAM SYNTAX FOR MULTI-PROCESS AUDIO DECODING 有权
标题翻译：用于多进程音频解码的BITSTREAM SYNTAX
公开(公告)号：US20120323584A1
公开(公告)日：2012-12-20
申请号：US13595939
申请日：2012-08-27
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

3. 发明申请

US20110196684A1 BITSTREAM SYNTAX FOR MULTI-PROCESS AUDIO DECODING 有权
标题翻译：用于多进程音频解码的BITSTREAM SYNTAX
公开(公告)号：US20110196684A1
公开(公告)日：2011-08-11
申请号：US13015467
申请日：2011-01-27
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

4. 发明授权

US07885819B2 Bitstream syntax for multi-process audio decoding 有权
标题翻译：多进程音频解码的比特流语法
公开(公告)号：US07885819B2
公开(公告)日：2011-02-08
申请号：US11772091
申请日：2007-06-29
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

5. 发明授权

US08255229B2 Bitstream syntax for multi-process audio decoding 有权
标题翻译：多进程音频解码的比特流语法
公开(公告)号：US08255229B2
公开(公告)日：2012-08-28
申请号：US13015467
申请日：2011-01-27
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

6. 发明申请

US20090006103A1 BITSTREAM SYNTAX FOR MULTI-PROCESS AUDIO DECODING 有权
标题翻译：用于多进程音频解码的BITSTREAM SYNTAX
公开(公告)号：US20090006103A1
公开(公告)日：2009-01-01
申请号：US11772091
申请日：2007-06-29
申请人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
发明人： Kazuhito Koishida , Sanjeev Mehrotra , Chao He , Wei-Ge Chen
IPC分类号： G10L19/00
CPC分类号： G10L19/167 , G10L19/002 , G10L19/008 , G10L19/022 , G10L19/03 , G10L19/038 , G10L19/04 , G10L19/24
摘要： An audio decoder provides a combination of decoding components including components implementing base band decoding, spectral peak decoding, frequency extension decoding and channel extension decoding techniques. The audio decoder decodes a compressed bitstream structured by a bitstream syntax scheme to permit the various decoding components to extract the appropriate parameters for their respective decoding technique.
摘要翻译：音频解码器提供包括实现基带解码，频谱峰值解码，频率扩展解码和信道扩展解码技术的组件的解码组件的组合。音频解码器解码由比特流语法方案构成的压缩比特流，以允许各种解码组件为它们各自的解码技术提取适当的参数。

7. 发明授权

US07953604B2 Shape and scale parameters for extended-band frequency coding 有权
标题翻译：扩展频带编码的形状和缩放参数
公开(公告)号：US07953604B2
公开(公告)日：2011-05-31
申请号：US11336618
申请日：2006-01-20
申请人： Sanjeev Mehrotra , Wei-Ge Chen , Kazuhito Koishida , Chao He
发明人： Sanjeev Mehrotra , Wei-Ge Chen , Kazuhito Koishida , Chao He
IPC分类号： G10L19/00
CPC分类号： G10L21/038
摘要： An audio encoder performs frequency extension coding that comprises determining one or more shape parameters using a displacement vector that corresponds to a displacement of an even number (e.g., an even number of sub-bands between a sub-band in a baseband frequency range and a sub-band in an extended-band frequency range). The shape parameters can be determined on a per-audio-block basis. Restricting a displacement to an even number (in frequency extension coding or in other signal modulation schemes) can improve the quality of reconstructed audio. An audio encoder also can perform frequency extension coding that comprises determining one or more scale parameters at one or more audio blocks, and determining one or more anchor points for interpolating the one or more scale parameters.
摘要翻译：音频编码器执行频率扩展编码，其包括使用对应于偶数位移的位移矢量来确定一个或多个形状参数（例如，基带频率范围中的子带和偶数个子带之间的偶数个子带）子带在扩展频带范围内）。形状参数可以基于每个音频块来确定。将位移限制为偶数（在频率扩展编码或其他信号调制方案中）可以提高重构音频的质量。音频编码器还可以执行频率扩展编码，其包括确定一个或多个音频块处的一个或多个缩放参数，以及确定用于内插一个或多个缩放参数的一个或多个定位点。

8. 发明申请

US20070174063A1 Shape and scale parameters for extended-band frequency coding 有权
标题翻译：扩展频带编码的形状和缩放参数
公开(公告)号：US20070174063A1
公开(公告)日：2007-07-26
申请号：US11336618
申请日：2006-01-20
申请人： Sanjeev Mehrotra , Wei-Ge Chen , Kazuhito Koishida , Chao He
发明人： Sanjeev Mehrotra , Wei-Ge Chen , Kazuhito Koishida , Chao He
IPC分类号： G10L19/00
CPC分类号： G10L21/038
摘要： An audio encoder performs frequency extension coding that comprises determining one or more shape parameters using a displacement vector that corresponds to a displacement of an even number (e.g., an even number of sub-bands between a sub-band in a baseband frequency range and a sub-band in an extended-band frequency range). The shape parameters can be determined on a per-audio-block basis. Restricting a displacement to an even number (in frequency extension coding or in other signal modulation schemes) can improve the quality of reconstructed audio. An audio encoder also can perform frequency extension coding that comprises determining one or more scale parameters at one or more audio blocks, and determining one or more anchor points for interpolating the one or more scale parameters.
摘要翻译：音频编码器执行频率扩展编码，其包括使用对应于偶数位移的位移矢量来确定一个或多个形状参数（例如，基带频率范围中的子带和偶数个子带之间的偶数个子带）子带在扩展频带范围内）。形状参数可以基于每个音频块来确定。将位移限制为偶数（在频率扩展编码或其他信号调制方案中）可以提高重构音频的质量。音频编码器还可以执行频率扩展编码，其包括确定一个或多个音频块处的一个或多个缩放参数，以及确定用于内插一个或多个缩放参数的一个或多个定位点。

9. 发明申请

US20090210222A1 Multi-Channel Hole-Filling For Audio Compression 审中-公开
标题翻译：用于音频压缩的多通道孔填充
公开(公告)号：US20090210222A1
公开(公告)日：2009-08-20
申请号：US12032119
申请日：2008-02-15
申请人： Sanjeev Mehrotra , Hui Gao , Kazuhito Kioshida , Chao He
发明人： Sanjeev Mehrotra , Hui Gao , Kazuhito Kioshida , Chao He
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0204
摘要： Multi-channel hole-filling for audio compression is disclosed. Channel dependency groups (CDGs) are explicitly extracted based on channel transform information. Holes are detected within each CDG for each bark, and a CDG hole is identified as requiring filling as a particular section of frequency bandwidth larger than a predetermined hole bandwidth threshold and with all zero-value coefficients in all channels after quantizing. Bark weights are adjusted by multiplying the original bark weights with one calculated scalar so as to remove each detected CDG hole.
摘要翻译：公开了用于音频压缩的多通道孔填充。基于信道变换信息明确提取频道依赖组（CDG）。在每个CDG内为每个树皮检测孔，并且将CDG孔识别为需要填充作为大于预定孔带宽阈值的频率带宽的特定部分，并且在量化之后具有所有通道中的所有零值系数。通过将原始树皮重量乘以一个计算标量来调整树皮重量，以便去除每个检测到的CDG孔。

10. 发明授权

US08942370B2 Filter bank optimization for acoustic echo cancellation 有权
标题翻译：用于声学回声消除的滤波器组优化
公开(公告)号：US08942370B2
公开(公告)日：2015-01-27
申请号：US13411865
申请日：2012-03-05
申请人： Qin Li , Wei-ge Chen , Chao He
发明人： Qin Li , Wei-ge Chen , Chao He
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： A communications device is presented for providing bi-directional audio communications between a near-end user and a far-end user via a bidirectional communications channel. The communications device includes an adaptive echo canceller receiving a near-end audio signal and a far-end audio signal and providing an echo-canceled near-end audio signal for transmission to the far-end user via the communications channel. The adaptive echo canceller includes a first bank of analysis filters for filtering the near-end audio signal, a second bank of analysis filters for filtering the far-end audio signal, and a bank of synthesis filters for filtering sub-band echo-canceled signals generated within the adaptive echo canceller. The first and second filter banks have a frequency response optimized to reduce echo residual gain.
摘要翻译：呈现通信设备，用于经由双向通信信道在近端用户和远端用户之间提供双向音频通信。通信设备包括接收近端音频信号和远端音频信号的自适应回波消除器，并提供回波消除的近端音频信号，以经由通信信道传输给远端用户。自适应回波消除器包括用于滤波近端音频信号的第一组分析滤波器，用于滤波远端音频信号的第二组分析滤波器，以及用于滤波子带回波消除信号的一组合成滤波器在自适应回波消除器内产生。第一和第二滤波器组具有优化的频率响应以减少回波残余增益。

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